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suitable vehicle weighbridge.
Trailer load/noseweight The trailer load/noseweight affects the gross weight of the vehicle. If a trailer is attached, the trailer load/noseweight is included in the load along with occupants and luggage. The trailer load/noseweight is usually between
10% and 15% of the gross weight of the trailer and its load.
Maximum load rating
Do not overload the tires by exceeding the specified load limit. The maximum permissible load can be found on the vehicle's Tire and Loading Information placard on the B-pillar on the driver's side (Y page 306).
Maximum tire load : is the maximum permissible weight for which the tire is approved. i The actual values for tires are vehicle-
specific and may deviate from the values in the illustration.
Uniform Tire Quality Grading Standards
311
Uniform Tire Quality Grading Standards Overview of Tire Quality Grading Standards
Uniform Tire Quality Grading Standards are U.S. government specifications. Their purpose is to provide drivers with uniform reliable information on tire performance data. Tire manufacturers have to grade tires using three performance factors: tread wear :, tire traction ;, and heat resistance =. These regulations do not apply to Canada. Nevertheless, all tires sold in North America are provided with the corresponding quality grading markings on the sidewall of the tire. All passenger car tires must conform to the statutory safety requirements in addition to these grades. Where applicable, the tire grading information can be found on the tire sidewall between the tread shoulder and maximum tire width. i The actual values for tires are vehicle-
specific and may deviate from the values in the illustration.
For example: Treadwear 200
Traction AA
Temperature
Treadwear The treadwear grade is a comparative rating based on the wear rate of the tire when tested under controlled conditions on a specified U.S. government course. For example, a tire graded 150 would wear one and one-half times as well on the government course as a tire graded 100. The relative performance of tires depends upon the actual conditions of their use, however, and may depart significantly from the norm, due to variations in driving habits, service practices and differences in road characteristics and climate conditions.
Traction G WARNING The traction grade assigned to this tire is based on straight-ahead braking traction tests, and does not include acceleration, cornering, hydroplaning, or peak traction characteristics.
The traction grades, from highest to lowest, are AA, A, B, and C. Those grades represent the tire's ability to stop on a wet surface as measured under controlled conditions on specified government test surfaces of asphalt and concrete. A tire marked C may have poor traction performance. The safe speed on a wet, snow covered or icy road is always lower than on dry road surfaces. You should pay special attention to road conditions when temperatures are around the freezing point. Mercedes-Benz recommends a minimum tread depth of ã in (4 mm) for all four winter tires (Y page 300) to maintain normal driving characteristics in winter. Winter tires can reduce the braking distance on snow-covered surfaces in comparison with summer tires. Stopping distance, however, is still considerably greater than when the road is
312 Tire labeling
not covered with ice or snow. Take appropriate care when driving. ! Avoid wheelspin. This can lead to damage
to the drive train.
Tire labeling Overview of tire labeling
Temperature G WARNING The temperature grade for this tire is established for a tire that is properly inflated and not overloaded. Excessive speed, underinflation, or excessive loading, either separately or in combination, can cause excessive heat build-up and possible tire failure.
The temperature grades are A (the highest), B, and C. These represent the tire's resistance to the generation of heat and its ability to dissipate heat when tested under controlled conditions on a specified indoor laboratory test wheel. Sustained high temperature can cause the material of the tire to degenerate and reduce tire life, and excessive temperature can lead to sudden tire failure. The grade C corresponds to a level of performance which all passenger car tires must meet under the Federal Motor Vehicle Safety Standard No. 109. Grades B and A represent higher levels of performance on the laboratory test wheel than the minimum required by law.
The following markings are on the tire in addition to the tire name (sales designation) and the manufacturer's name: : Uniform tire Quality Grading Standard
; DOT, Tire Identification Number
(Y page 316)
(Y page 315)
= Maximum tire load (Y page 310) ? Maximum tire pressure (Y page 304) A Manufacturer B Tire material (Y page 316) C Tire size designation, load-bearing
capacity and speed index (Y page 313)
D Load index (Y page 315) E Tire name i Tire data is vehicle-specific and may deviate from the data in the example.
Tire size designation, load-bearing capacity and speed rating
: Tire width ; Nominal aspect ratio in % = Tire code ? Rim diameter A Load bearing index B Speed rating i Tire data is vehicle-specific and may deviate from the data in the example.
General: depending on the manufacturer's standards, the size imprinted in the tire wall may not contain any letters or may contain one letter that precedes the size description. If there is no letter preceding the size description (as shown above): these are passenger vehicle tires according to European manufacturing standards. If "P" precedes the size description: these are passenger vehicle tires according to U.S. manufacturing standards. If "LT" precedes the size description: these are light truck tires according to U.S. manufacturing standards. If "T" precedes the size description: these are compact emergency spare wheels at high tire pressure, to be used only temporarily in an emergency. Tire width: tire width : shows the nominal tire width in millimeters. Nominal aspect ratio: aspect ratio ; is the size ratio between the tire height and the tire width and is shown in percent. The aspect
Tire labeling 313
ratio is calculated by dividing the tire width by the tire height. Tire code: tire code = specifies the tire type. "R" represents radial tires; "D" represents diagonal tires; "B" represents diagonal radial tires. Optionally, tires with a maximum speed of over 149mph (240km/h) may have "ZR" in the size description, depending on the manufacturer (e.g. 245/40 ZR 18). Rim diameter: rim diameter ? is the diameter of the bead seat, not the diameter of the rim flange. The rim diameter is specified in inches (in). Load bearing index: load bearing index A is a numerical code which specifies the maximum load-bearing capacity of a tire. Do not overload the tires by exceeding the specified load limit. The maximum permissible load can be found on the vehicle's Tire and Loading Information placard on the B-pillar on the driver's side (Y page 306). Example: A load-bearing index of 91 indicates a maximum load of 1,356lb (615kg) that can be carried by the tires. For further information on the maximum tire load in kilograms and pounds, see (Y page 310). For further information on the load-bearing index, see Load index (Y page 315). Speed rating: speed rating B specifies the approved maximum speed of the tire. G WARNING Exceeding the stated tire load-bearing capacity and the approved maximum speed could lead to tire damage or the tire bursting. There is a risk of accident. Therefore, only use tire types and sizes approved for your vehicle model. Observe the tire load rating and speed rating required for your vehicle.
Regardless of the speed rating, always observe the speed limits. Drive carefully and
314 Tire labeling
adapt your driving style to the traffic conditions. Summer tires Index ZR...Y ZR...(..Y) ZR
Speed rating up to 100mph (160 km/h) up to 106mph (170 km/h) up to 112mph (180 km/h) up to 118mph (190 km/h) up to 130mph (210 km/h) up to 149mph (240 km/h) up to 168mph (270 km/h) up to 186mph (300 km/h) up to 186mph (300 km/h) over 186mph (300 km/h) over 149mph (240 km/h)
ROptionally, tires with a maximum speed of over 149 mph (240km/h) may have "ZR" in the size description, depending on the manufacturer (e.g. 245/40 ZR 18). The service specifications consist of load bearing index A and speed rating B.
RIf the size description of your tire includes
"ZR" and there are no service specifications, ask the tire manufacturer in order to find out the maximum speed. If a service specification is available, the maximum speed is limited according to the speed rating in the service specification. Example: 245/40 ZR 18 97 Y. In this example, "97 Y" is the service specification. The letter "Y" represents the speed rating and the maximum speed of the tire is limited to 186 mph (300km/h).
RThe size description for all tires with
maximum speeds of over 186mph (300km/h) must include "ZR", and the
6 Or M+Si for winter tires.
service specification must be given in brackets. Example: 275/40 ZR 18 (99 Y). The speed rating "(Y)" indicates that the maximum speed of the tire is over 186mph (300km/h). Ask the tire manufacturer about the maximum speed. All-weather tires and winter tires Index Q M+S6
T M+S6
H M+S6
V M+S6Speed rating up to 100mph (160 km/h) up to 118mph (190 km/h) up to 130mph (210 km/h) up to 149mph (240 km/h)
i Not all tires with the M+S marking provide the driving characteristics of winter tires. Winter tires have, in addition to the M+S identification, the i snow flake symbol on the tire sidewall. Tires with this marking fulfill the requirements of the Rubber Manufacturers Association (RMA) and the Rubber Association of Canada (RAC) regarding the tire traction on snow. They have been especially developed for driving on snow.
An electronic speed limiter prevents your vehicle from exceeding a speed of 130mph (210km/h). The speed rating of tires mounted at the factory may be higher than the maximum speed that the electronic speed limiter permits. Make sure that your tires have the required speed rating, e.g. when buying new tires. The required speed rating for your vehicle can be found in the "Tires" section (Y page 323). Further information about reading tire data can be obtained from any qualified specialist workshop.
Load index
In addition to the load bearing index, load index : may be imprinted after the letters that identify speed index B(Y page 313) on the sidewall of the tire. RIf no specification is given: no text (as in the
example above), represents a standard load (SL) tire
RXL or Extra Load: represents a reinforced
tire
RLight Load: represents a light load tire RC, D, E: represents a load range that
depends on the maximum load that the tire can carry at a certain pressure
i Tire data is vehicle-specific and may deviate from the data in the example.
DOT, Tire Identification Number (TIN)
Tire labeling 315
The TIN is a unique identification number. The TIN makes it easier for tire manufacturers or retreaders to notify customers of recalls or other safety-related matters. It makes it possible for the purchaser to easily identify the affected tires. The TIN consists of the manufacturer identification code ;, tire size =, tire type code ? and manufacturing date A. DOT (Department of Transportation): tire symbol : indicates that the tire complies with the requirements of the Canadian Transport Ministry. Manufacturer identification code: manufacturer identification code ; provides details on the tire manufacturer. New tires have a code with two symbols. Retreaded tires have a code with four symbols. Further information about retreaded tires (Y page 298). Tire size: identifier = describes the tire size. Tire type code: tire type code ? can be used by the manufacturer as a code to describe specific characteristics of the tire. Date of manufacture: date of manufacture A provides information about the age of a tire. The first and second positions represent the week of manufacture, starting with "01" for the first calendar week. Positions three and four represent the year of manufacture. For example, a tire that is marked with "3208", was manufactured in week 32 in 2008. i Tire data is vehicle-specific and may deviate from the data in the example.
Canadian tire regulations prescribe that every new tire manufacturer or retreader has to imprint a TIN in or on the sidewall of each tire produced.
316 Definition of terms for tires and loading
Tire characteristics
This information describes the tire cord and the number of layers in sidewall : and under tire tread ;. i Tire data is vehicle-specific and may deviate from the data in the example.
Definition of terms for tires and loading Tire ply composition and material used Describes the number of plies or the number of layers of rubber-coated fabric in the tire tread and sidewall. These are made of steel, nylon, polyester and other materials.
Normal occupant weight The number of occupants for which the vehicle is designed multiplied by 68 kilograms (150 lb).
Uniform Tire Quality Grading Standards A uniform standard to grade the quality of tires with regards to tread quality, tire traction and temperature characteristics. Ratings are determined by tire manufacturers using U.S. government testing procedures. The ratings are molded into the sidewall of the tire.
Recommended tire pressure The recommended tire pressure applies to the tires mounted at the factory. The Tire and Loading Information placard contains the recommended tire pressures for cold tires on a fully loaded vehicle and for the maximum permissible vehicle speed. The tire pressure table contains the recommended pressures for cold tires for various operating conditions, i.e. differing load and speed conditions.
Bar Metric unit for tire pressure. 14.5038 pounds per square inch (psi) and 100 kilopascals (kPa) are the equivalent of 1 bar.
Increased vehicle weight due to optional equipment This is the combined weight of all standard and optional equipment available for the vehicle, regardless of whether it is actually installed on the vehicle or not.
DOT (Department of Transportation) DOT marked tires fulfill the requirements of the Canadian Transport Ministry.
Rim This is the part of the wheel on which the tire is mounted.
Definition of terms for tires and loading 317
GAWR (Gross Axle Weight Rating) The GAWR is the maximum gross axle weight rating. The actual load on an axle must never exceed the gross axle weight rating. The gross axle weight rating can be found on the vehicle identification plate on the B-pillar on the driver's side.
Speed rating The speed rating is part of the tire identification. It specifies the speed range for which the tire is approved.
GVW (Gross Vehicle Weight) The gross vehicle weight includes the weight of the vehicle including fuel, tools, the spare wheel, accessories installed, occupants, luggage and the drawbar noseweight, if applicable. The gross vehicle weight must not exceed the gross vehicle weight rating GVWR as specified on the vehicle identification plate on the B-pillar on the driver's side.
GVWR (Gross Vehicle Weight Rating) The GVWR is the maximum permissible gross weight of a fully loaded vehicle (the weight of the vehicle including all accessories, occupants, fuel, luggage and the drawbar noseweight, if applicable). The gross vehicle weight rating is specified on the vehicle identification plate on the B-pillar on the driver's side.
Maximum loaded vehicle weight The maximum weight is the sum of: Rthe curb weight of the vehicle Rthe weight of the accessories Rthe load limit Rthe weight of the factory installed optional
equipment
Kilopascal (kPa) Metric unit for tire pressure. 6.9 kPa corresponds to 1 psi. Another unit for tire pressure is bar. 100 kilopascal (kPa) is the equivalent of 1 bar.
Load index In addition to the load-bearing index, the load index may also be imprinted on the sidewall of the tire. This specifies the load-bearing capacity more precisely.
Curb weight The weight of a vehicle with standard equipment including the maximum capacity of fuel, oil and coolant. It also includes the air- conditioning system and optional equipment if these are installed in the vehicle, but does not include passengers or luggage.
Maximum load rating The maximum load rating in kilograms or pounds is the maximum weight for which a tire is approved.
Maximum permissible tire pressure Maximum permissible tire pressure for one tire.
Maximum load on one tire Maximum load on one tire. This is calculated by dividing the maximum axle load of one axle by two.
PSI (pounds per square inch) A standard unit of measure for tire pressure.
318 Definition of terms for tires and loading
Aspect ratio Relationship between tire height and tire width in percent.
Tire pressure This is pressure inside the tire applying an outward force to each square inch of the tire's surface. The tire pressure is specified in pounds per square inch (psi), in kilopascal (kPa) or in bar. The tire pressure should only be corrected when the tires are cold.
Tire pressure of cold tires The tires are cold: Rif the vehicle has been parked without
direct sunlight on the tires for at least three hours and
Rif the vehicle has not been driven further
than 1 mile (1.6 km)
Tread The part of the tire that comes into contact with the road.
Bead The tire bead ensures that the tire sits securely on the wheel. There are several steel wires in the bead to prevent the tire from coming loose from the wheel rim.
Sidewall The part of the tire between the tread and the bead.
Weight of optional extras The combined weight of those optional extras that weigh more than the replaced standard part and more than 2.3 kg (5 lbs). These
optional extras, such as high-performance brakes, level control, a roof rack or a high- performance battery, are not included in the curb weight and the weight of the accessories.
TIN (Tire Identification Number) This is a unique identifier which can be used by a tire manufacturer to identify tires, for example for a product recall, and thus identify the purchasers. The TIN is made up of the manufacturer's identity code, tire size, tire type code and the manufacturing date.
Load bearing index The load bearing index (also load index) is a code that contains the maximum load bearing capacity of a tire.
Traction Traction is the result of friction between the tires and the road surface.
Treadwear indicators Narrow bars (tread wear bars) that are distributed over the tire tread. If the tire tread is level with the bars, the wear limit of á in (1.6 mm) has been reached.
Occupant distribution The distribution of occupants in a vehicle at their designated seating positions.
Total load limit Nominal load and luggage load plus 68 kilograms (150 lb) multiplied by the number of seats in the vehicle.
Changing a wheel Flat tire You can find information on what to do in the event of a flat tire in the "Flat tire" section (Y page 281). You will also find information on driving with MOExtended tires in the event of a flat tire. Vehicle with emergency spare wheel: in the event of a flat tire, the emergency spare wheel is mounted as described under "Mounting a wheel" (Y page 319).
Rotating the wheels G WARNING Interchanging the front and rear wheels may severely impair the driving characteristics if the wheels or tires have different dimensions. The wheel brakes or suspension components may also be damaged. There is a risk of accident. Rotate front and rear wheels only if the wheels and tires are of the same dimensions.
Always pay attention to the instructions and safety notes when changing a wheel (Y page 319). The wear patterns on the front and rear tires differ, depending on the operating conditions. Rotate the wheels before a clear wear pattern has formed on the tires. Front tires typically wear more on the shoulders and the rear tires in the center. If your vehicle's tire configuration allows, you can rotate the wheels according to the intervals in the tire manufacturer's warranty book in your vehicle documents. If no warranty book is available, the tires should be interchanged every 3,000 to 6,000 miles (5,000 to 10,000 km), or earlier if tire wear requires. Do not change the direction of wheel rotation. Clean the contact surfaces of the wheel and the brake disc thoroughly every time a wheel is interchanged. Check the tire pressure and,
Changing a wheel
319
if necessary, restart the tire pressure loss warning system.
Direction of rotation Tires with a specified direction of rotation have additional benefits, e.g. if there is a risk of hydroplaning. You will only gain these benefits if the correct direction of rotation is maintained. An arrow on the sidewall of the tire indicates its correct direction of rotation.
Storing wheels Store wheels that are not being used in a cool, dry and preferably dark place. Protect the tires from oil, grease, gasoline and diesel.
Cleaning the wheels G WARNING The water jet from a circular jet nozzle (dirt blasters) can cause invisible exterior damage to the tires or chassis components. Components damaged in this way may fail unexpectedly. There is a risk of an accident. Do not use power washers with circular jet nozzles to clean the vehicle. Have damaged tires or chassis components replaced immediately.
Mounting a wheel Preparing the vehicle X Stop the vehicle on solid, non-slippery and
level ground.
X Apply the electric parking brake manually
X Bring the front wheels into the straight-
(Y page 150).
ahead position.
X Move the DIRECT SELECT lever to position
P.
320 Changing a wheel
X Switch off the engine. X Remove the SmartKey from the ignition
lock.
X If included in the vehicle equipment,
remove the tire-change tool kit from the vehicle.
X Secure the vehicle to prevent it from rolling
away.
Securing the vehicle to prevent it from rolling away
If your vehicle is equipped with a wheel chock, it can be found in the tire-change tool kit (Y page 280). The folding wheel chock is an additional safety measure to prevent the vehicle from rolling away, for example when changing a wheel. X Fold both plates upwards :. X Fold out lower plate ;. X Guide the lugs on the lower plate fully into
the openings in base plate =.
Securing the vehicle on level ground
X On level ground: place chocks or other suitable items under the front and rear of the wheel that is diagonally opposite the wheel you wish to change.
Securing the vehicle on slight downhill gradients X On light downhill gradients: place
chocks or other suitable items in front of the wheels of the front and rear axle.
Raising the vehicle G WARNING If you do not position the jack correctly at the appropriate jacking point of the vehicle, the jack could tip over with the vehicle raised. There is a risk of injury. Only position the jack at the appropriate jacking point of the vehicle. The base of the jack must be positioned vertically, directly under the jacking point of the vehicle.
The following must be observed when raising the vehicle: Rto raise the vehicle, only use the vehicle-
specific jack that has been tested and approved by Mercedes-Benz. If used incorrectly, the jack could tip over with the vehicle raised.
Rthe jack is designed only to raise and hold the vehicle for a short time while a wheel is being changed. It is not suited for performing maintenance work under the vehicle.
Ravoid changing the wheel on uphill and
downhill slopes.
Rbefore raising the vehicle, secure it from
rolling away by applying the parking brake and inserting wheel chocks. Never disengage the parking brake while the vehicle is raised.
Rthe jack must be placed on a firm, flat and
non-slip surface. On a loose surface, a large, load-bearing underlay must be used. On a slippery surface, a non-slip underlay must be used, e.g. rubber mats.
Rdo not use wooden blocks or similar
objects as a jack underlay. Otherwise, the jack will not be able to achieve its load- bearing capacity due to the restricted height.
Rmake sure that the distance between the underside of the tires and the ground does not exceed 1.2 inches (3 cm).
Rnever place your hands and feet under the
raised vehicle.
Rnever lie under the raised vehicle. Rnever start the engine when the vehicle is
raised.
Rnever open or close a door or the trunk lid
when the vehicle is raised.
Rmake sure that no persons are present in
the vehicle when the vehicle is raised. ! The jack is designed exclusively for
jacking up the vehicle at the jacking points. Otherwise, your vehicle could be damaged.
Changing a wheel
321
The jacking points are located just behind the wheel housings of the front wheels and just in front of the wheel housings of the rear wheels (arrows). X Take the ratchet wrench out of the tire-
changing tool kit and place it on the hexagon nut of the jack so that the letters AUF are visible.
X Position jack = at jacking point ;.
X Using lug wrench :, loosen the bolts on the wheel you wish to change by about one full turn. Do not unscrew the bolts completely.
X Make sure the foot of the jack is directly
beneath the jacking point.
! To prevent damage to the paintwork, hold the wheel securely against the wheel hub while screwing in the first wheel bolt.
X Clean the wheel and wheel hub contact
surfaces.
X Place the new wheel on the wheel hub and
push it on.
X Tighten the wheel bolts until they are
finger-tight.
Lowering the vehicle G WARNING The wheels could work loose if the wheel nuts and bolts are not tightened to the specified tightening torque. There is a risk of accident. Have the tightening torque immediately checked at a qualified specialist workshop after a wheel is changed.
322 Changing a wheel
X Turn ratchet wrench ? until jack = sits completely on jacking point ; and the base of the jack lies evenly on the ground.
X Turn ratchet wrench ? until the tire is
raised a maximum of 1.2 in (3 cm) from the ground.
Removing a wheel ! Do not place wheel bolts in sand or on a
dirty surface. The bolt and wheel hub threads could otherwise be damaged when you screw them in.
X Unscrew the wheel bolts. X Remove the wheel.
Mounting a new wheel G WARNING Oiled or greased wheel bolts or damaged wheel bolts/hub threads can cause the wheel bolts to come loose. As a result, you could lose a wheel while driving. There is a risk of accident. Never oil or grease wheel bolts. In the event of damage to the threads, contact a qualified specialist workshop immediately. Have the damaged wheel bolts or hub threads replaced/renewed. Do not continue driving. G WARNING If you tighten the wheel bolts or wheel nuts when the vehicle is raised, the jack could tip over. There is a risk of injury. Only tighten the wheel bolts or wheel nuts when the vehicle is on the ground.
Always pay attention to the instructions and safety notes in the "Changing a wheel" section (Y page 319). Only use wheel bolts that have been designed for the wheel and the vehicle. For safety reasons, Mercedes-Benz recommends that you only use wheel bolts which have been approved for Mercedes-Benz vehicles and the respective wheel.
X Place the ratchet wrench onto the hexagon
nut of the jack so that the letters AB are visible.
X Turn the ratchet wrench until the vehicle is once again standing firmly on the ground.
X Place the jack to one side. X Tighten the wheel bolts evenly in a crosswise pattern in the sequence indicated (: to A). The tightening torque must be 96 lb-ft (130 Nm).
X Turn the jack back to its initial position. X Stow the jack and the rest of the vehicle
tools in the vehicle again.
X Check the tire pressure of the newly
mounted wheel and adjust it if necessary. Observe the recommended tire pressure (Y page 301).
Wheel and tire combinations General notes ! For safety reasons, Mercedes-Benz
recommends that you only use tires and wheels which have been approved by Mercedes-Benz specifically for your vehicle. These tires have been specially adapted for use with the control systems, such as ABS or ESP®, and are marked as follows: RMO = Mercedes-Benz Original RMOE = Mercedes-Benz Original Extended (tires featuring run-flat characteristics)
RMO1 = Mercedes-Benz Original (only
certain AMG tires)
Mercedes-Benz Original Extended tires may only be used on wheels that have been specifically approved by Mercedes-Benz. Only use tires, wheels or accessories tested and approved by Mercedes-Benz. Certain characteristics, e.g. handling, vehicle noise emissions or fuel consumption, may otherwise be adversely affected. In addition, when driving with a
Wheel and tire combinations
323
load, tire dimension variations could cause the tires to come into contact with the bodywork and axle components. This could result in damage to the tires or the vehicle. Mercedes-Benz accepts no liability for damage resulting from the use of tires, wheels or accessories other than those tested and approved. Information on tires, wheels and approved combinations can be obtained from any qualified specialist workshop.
! Retreaded tires are neither tested nor recommended by Mercedes-Benz, since previous damage cannot always be detected on retreaded tires. As a result, Mercedes-Benz cannot guarantee vehicle safety if retreaded tires are mounted. Do not mount used tires if you have no information about their previous usage.
Overview of abbreviations used in the following tire tables: RBA: both axles RFA: front axle RRA: rear axle The recommended pressures for various operating conditions can be found: Ron the Tire and Loading Information placard
with the recommended tire pressures on the B-pillar on the driver's side
Rin the tire pressure table on the inside of
the fuel filler flap
Observe the notes on recommended tire pressures under various operating conditions (Y page 301). Check tire pressures regularly, and only when the tires are cold. Comply with the maintenance recommendations of the tire manufacturer in the vehicle document wallet.
324 Wheel and tire combinations
Notes on the vehicle equipment – always equip the vehicle with: Rtires of the same size on a given axle (left/
right)
Rthe same type of tires at a given time
(summer tires, winter tires, MOExtended tires) Exception: it is permissible to install a different type or make in the event of a flat tire. Observe the "MOExtended tires (tires with run-flat characteristics" section (Y page 281).
Vehicles equipped with MOExtended tires are not equipped with a TIREFIT kit at the factory. It is therefore recommended that you additionally equip your vehicle with a TIREFIT kit if you mount tires that do not feature run- flat properties, e.g. winter tires. A TIREFIT kit may be obtained from a qualified specialist workshop. i The following pages contain information on approved wheel rim and tire sizes for equipping your vehicle with winter tires. Winter tires are not available at the factory as standard equipment or optional extras. If you want to equip your vehicle with approved winter tires, it may be necessary to obtain wheel rims in the corresponding size. The size of the approved winter tires may differ from the standard tires. This is dependent on the model and the equipment installed at the factory. The tires and wheel rims, as well as further information, can be obtained at a qualified specialist workshop.
In the following table, the wheel/tire combinations are assigned to the vehicle models through variants, e.g. V1, V2 etc.:
V1 B 2507
i Not all wheel and tire combinations are available at the factory for all countries.
7 BlueEFFICIENCY
Emergency spare wheel
325
Tires
BA
BA
BA
BA
Summer tires 225/40 R18 92 W XL MOExtended8, 9
All-weather tires 225/45 R17 91 H M+SMOExtended8, 9
Alloy wheels 7.5 J x 18 H2
Wheel offset: 2.05 in (52 mm)Alloy wheels 7.5 J x 17 H2
Wheel offset: 2.07 in (52.5 mm)Winter tires Alloy wheels 205/50 R17 93 H XL M+Si 6.5 J x 17 H2
205/50 R17 93 H XL M+SiMOExtended9
Wheel offset: 1.93 in (49 mm) 6.5 J x 17 H2
Wheel offset: 1.93 in (49 mm)V1
V1
V1
Emergency spare wheel Important safety notes G WARNING The wheel or tire size as well as the tire type of the spare wheel or emergency spare wheel and the wheel to be replaced may differ. Mounting an emergency spare wheel may severely impair the driving characteristics. There is a risk of an accident. To avoid hazardous situations: Radapt your driving style accordingly and
drive carefully.
Rnever mount more than one spare wheel or emergency spare wheel that differs in size. Ronly use a spare wheel or emergency spare
wheel of a different size briefly.
Rdo not switch ESP® off. Rhave a spare wheel or emergency spare wheel of a different size replaced at the nearest qualified specialist workshop.
Observe that the wheel and tire dimensions as well as the tire type must be correct.
When using an emergency spare wheel or spare wheel of a different size, you must not exceed the maximum speed of 50 mph (80 km/h). Snow chains must not be mounted on emergency spare wheels.
General notes You should regularly check the pressure of the emergency spare wheel, particularly prior to long trips, and correct the pressure as necessary (Y page 301). The value on the wheel or as given in the "Technical data" section (Y page 323) is valid. i When you are driving with the emergency
spare wheel mounted, the tire pressure loss warning system cannot function reliably. Only restart the tire pressure loss
8 Use of snow chains is not permitted. Observe the notes in the "Snow chains" section. 9 MOExtended tires (tires with run-flat characteristics) only in conjunction with activated tire pressure loss
warning.
326 Emergency spare wheel
warning system when the defective wheel has been replaced with a new wheel. An emergency spare wheel may also be mounted against the direction of rotation. Observe the time restriction on use as well as the speed limitation specified on the emergency spare wheel. Replace the tires after six years at the latest, regardless of wear. This also applies to the emergency spare wheel.
Removing the emergency spare wheel
X Open the tailgate. X Loosen lashing straps ; on emergency
spare wheel bag :.
X Remove emergency spare wheel bag :
with the "Minispare" emergency spare wheel.
For further information on changing and mounting a wheel, see (Y page 319).
Technical data "Minispare" emergency spare wheel Tires T 125/80 R17 99 M Tire pressure: 420 kPa (4.2 bar/61 psi)
Steel wheel 3.5 B x 17 H2
ET 19.5Useful information ............................ 328
Information regarding technical data .................................................... 328
Warranty ............................................ 328
Identification plates ......................... 328
Service products and filling capaci- ties ..................................................... 329
Vehicle data ...................................... 335327
328
Identification plates
Useful information
i This Operator's Manual describes all models and all standard and optional equipment of your vehicle available at the time of publication of the Operator's Manual. Country-specific differences are possible. Please note that your vehicle may not be equipped with all features described. This also applies to safety- related systems and functions.
i Read the information on qualified specialist workshops: (Y page 24).
Information regarding technical data
i The data stated here specifically refers to a vehicle with standard equipment. Consult an authorized Mercedes-Benz Center for the data for all vehicle variants and trim levels.
Warranty
The Service and Warranty Information booklet contains detailed information about the warranties covering your vehicle. Your authorized Mercedes-Benz Center will exchange or repair any defective parts originally installed in the vehicle in accordance with the terms of the following warranties: RNew Vehicle Limited Warranty REmission System Warranty REmission Performance Warranty RCalifornia, Connecticut, Maine,
Massachusetts, New York, Pennsylvania, Rhode Island and Vermont Emission Control System Warranty
RState Warranty Enforcement Laws (Lemon
Laws)
Replacement parts and accessories are covered by the Mercedes-Benz Parts and
Accessories warranties. You can obtain information about this from any authorized Mercedes-Benz Center. i Should you lose your Service and
Warranty Information booklet, have an authorized Mercedes-Benz Center arrange for a replacement. It will be mailed to you.
Identification plates Vehicle identification plate with vehicle identification number (VIN)
X Open the driver's door.
You will see vehicle identification plate :.
Example: vehicle identification plate ; VIN = Paint code i The data shown on the vehicle
identification plate is used only as an example. This data is different for every vehicle and can deviate from the data shown here. You can find the data
Service products and filling capacities
329
applicable to your vehicle on the vehicle identification plate.
VIN
X Slide the right-hand front seat to its
rearmost position.
X Fold up floor covering : in front of the
right-hand front seat. You will see VIN ;.
The VIN can also be found in the following locations: Ron the lower edge of the windshield
Ron the vehicle identification plate
(Y page 329)
(Y page 328)
Engine number
: Emissions control information plate ; Engine number (stamped into the
crankcase)
= VIN (on the lower edge of the windshield)
Service products and filling capacities Important safety notes G WARNING Service products may be poisonous and hazardous to health. There is a risk of injury. Comply with instructions on the use, storage and disposal of service products on the labels of the respective original containers. Always store service products sealed in their original containers. Always keep service products out of the reach of children. H Environmental note Dispose of service products in an environmentally responsible manner.
Service products include the following: RFuels RLubricants (e.g. engine oil, transmission oil) RCoolant RBrake fluid RWindshield washer fluid RClimate control system refrigerant Components and service products must be matched. You should therefore only use products that have been tested and approved by Mercedes-Benz. Information about tested and approved products can be obtained from an authorized Mercedes-Benz Center or on the Internet at http://bevo.mercedes-benz.com. You can recognize service products approved by Mercedes-Benz by the following inscription on the containers: RMB-Freigabe (e.g. MB-Freigabe 229.51) RMB Approval (e.g. MB Approval 229.51) Other designations or recommendations indicate a level of quality or a specification in accordance with an MB Sheet number (e.g. MB 229.5). They have not necessarily been approved by Mercedes-Benz.
330 Service products and filling capacities
Fuel Important safety notes G WARNING Fuel is highly flammable. If you handle fuel incorrectly, there is a risk of fire and explosion. You must avoid fire, open flames, creating sparks and smoking. Switch off the engine and, if applicable, the auxiliary heating before refueling. G WARNING Fuel is poisonous and hazardous to health. There is a risk of injury. You must make sure that fuel does not come into contact with your skin, eyes or clothing and that it is not swallowed. Do not inhale fuel vapors. Keep fuel away from children. If you or others come into contact with fuel, observe the following: RWash away fuel from skin immediately
using soap and water.
RIf fuel comes into contact with your eyes, immediately rinse them thoroughly with clean water. Seek medical assistance without delay.
RIf fuel is swallowed, seek medical
assistance without delay. Do not induce vomiting.
RImmediately change out of clothing which
has come into contact with fuel.
Tank capacity
Model
B 250 BlueEFFICIENCY
Total capacity 13.2 US gal
(50.0 l)
Model
B 250 BlueEFFICIENCY
Of which reserve Approx. 1.6 US gal
(6.0 l)
Gasoline Fuel grade ! Do not use diesel to refuel vehicles with a
gasoline engine. Do not switch on the ignition if you accidentally refuel with the wrong fuel. Otherwise, the fuel will enter the fuel system. Even small amounts of the wrong fuel could result in damage to the fuel system and the engine. The repair costs are high. Notify a qualified specialist workshop and have the fuel tank and fuel lines drained completely.
! You should only refuel with unleaded premium-grade gasoline as this avoids damaging the catalytic converter. If engine running problems are apparent, have the cause checked immediately and repaired. Excess unburned fuel can otherwise enter the catalytic converter, leading to overheating and possibly causing a fire.
! To ensure the longevity and full
performance of the engine, only premium- grade unleaded gasoline may be used. If there is no premium-grade unleaded gasoline available and regular unleaded gasoline must be used, please observe the following precautions: Ronly fill the fuel tank to half full with
regular unleaded gasoline and fill the rest with premium-grade unleaded gasoline as soon as possible.
Rdo not drive at the maximum speed. Ravoid sudden acceleration.
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331
Rif the vehicle is carrying a light load, e.g. two passengers without luggage, do not allow the engine to rev above 3000 rpm.
Rif the vehicle is fully loaded or is being
operated in mountainous terrain, do not depress the accelerator pedal further than Ô of the pedal travel.
Only refuel using premium-grade unleaded gasoline with a minimum octane rating of 91. Reformulated Gasoline (RFG) and/or unleaded gasoline with additives can be used. The concentration of additives in the fuel, however, must not exceed 10%, e.g.: REthanol RTAME RETBE RIPA RTBA For MTBE, the concentration should not exceed 15%. The concentration of methanol in gasoline, including other additives, must not exceed 3%. Using mixtures of methanol and ethanol is not permitted. Gasohol, a mixture of 10% ethanol and 90% unleaded gasoline, may be used. All of these blends must fulfill the fuel requirements, e.g.: Rknock resistance Rboiling point Rvapor pressure You will usually find information about the fuel grade on the pump. If you cannot find the label on the pump, ask the staff for assistance.
i For more information, contact a qualified
specialist workshop.
Information on refueling (Y page 147). Additives ! Operating the engine with fuel additives
can increase wear and tear to the fuel system high-pressure pump and lead to
contamination of the entire fuel system. The repair costs are high. This does not include additives for the removal and prevention of residue buildup. gasoline must only be mixed with additives recommended by Mercedes-Benz. More information about recommended additives can be obtained from any authorized Mercedes-Benz Center.
One of the main problems of poor fuel quality is the forming of deposits that are created during the gasoline combustion process. Mercedes-Benz recommends that you use branded fuels that have additives. If you use fuels without these additives over a longer period of time, carbon deposits may build up. These deposits form at the inlet valves and in the combustion chamber in particular. This could lead to engine problems, e.g.: Rlonger engine warm-up phase Runeven idle Rengine noise Rmisfiring Rloss of power Carbon deposits may form if the availability of gasoline with relevant additives is insufficient (in certain regions). In this case, Mercedes-Benz recommends additives approved for use in Mercedes-Benz vehicles; see http://bevo.mercedes-benz.com. For a list of approved products, consult an authorized Mercedes-Benz Center. Comply with the instructions for use on the product label. Do not mix other fuel additives with fuel. This causes unnecessary costs and could damage the engine.
332 Service products and filling capacities
Additives ! Do not use any additives in the engine oil.
This could damage the engine.
Engine oil viscosity
Engine oil General notes ! Never use engine oil or an oil filter of a specification other than is necessary to fulfill the prescribed service intervals. Do not change the engine oil or oil filter in order to achieve longer replacement intervals than those prescribed. You could otherwise cause engine damage or damage to the exhaust gas aftertreatment. Follow the instructions in the service interval display regarding the oil change. Otherwise, you may damage the engine and the exhaust gas aftertreatment.
When handling engine oil, observe the important safety notes on service products (Y page 329). The engine oils are matched to the performance of Mercedes-Benz engines and service intervals. You should therefore only use engine oils and oil filters that are approved for vehicles with maintenance systems. For a list of approved engine oils and oil filters, consult an authorized Mercedes-Benz Center. Or visit the website http://bevo.mercedes-benz.com. The table shows which engine oils have been approved for your vehicle. Model
MB
Engine model 270
Approval
229.5
B 250 BlueEFFICIENCY
i MB approval is indicated on the oil
containers.
Filling capacities The following values refer to an oil change including the oil filter. Model B 250 BlueEFFICIENCY 5.9 US qt (5.6 l)
Capacity
Viscosity describes the flow characteristics of a fluid. If an engine oil has a high viscosity, this means that it is thick; a low viscosity means that it is thin. Select an engine oil with an SAE classification (viscosity) suitable for the prevailing outside temperatures. The table shows you which SAE classifications are to be used. The low- temperature characteristics of engine oils can deteriorate significantly, e.g. as a result of aging, soot and fuel deposits. It is therefore strongly recommended that you carry out regular oil changes using an approved engine oil with the appropriate SAE classification.
Brake fluid G WARNING The brake fluid constantly absorbs moisture from the air. This lowers the boiling point of the brake fluid. If the boiling point of the brake fluid is too low, vapor pockets may form in the brake system when the brakes are applied hard. This would impair braking efficiency. There is a risk of an accident. You should have the brake fluid renewed at the specified intervals.
Service products and filling capacities
333
When handling brake fluid, observe the important safety notes on service products (Y page 329). The brake fluid change intervals can be found in the Maintenance Booklet. Only use brake fluid approved by Mercedes- Benz according to MB Approval 331.0. Information about approved brake fluid can be obtained at any qualified specialist workshop or on the Internet at http://bevo.mercedes-benz.com. i Have the brake fluid renewed regularly at
a qualified specialist workshop.
Coolant Important safety notes G WARNING If antifreeze comes into contact with hot components in the engine compartment, it may ignite. There is a risk of fire and injury. Let the engine cool down before you add antifreeze. Make sure that antifreeze is not spilled next to the filler neck. Thoroughly clean the antifreeze from components before starting the engine.
! Only add coolant that has been premixed with the desired antifreeze protection. You could otherwise damage the engine. Further information on coolants can be found in the Mercedes-Benz Specifications for Service Products, MB Specifications for Service Products 310.1, e.g. on the Internet at http://bevo.mercedes-benz.com. Or contact a qualified specialist workshop. ! Always use a suitable coolant mixture,
even in countries where high temperatures prevail. Otherwise, the engine cooling system is not sufficiently protected from corrosion and overheating.
When handling coolant, observe the important safety notes on service products (Y page 329). The coolant is a mixture of water and antifreeze/corrosion inhibitor. It performs the following tasks: Rcorrosion protection Rantifreeze protection Rraising the boiling point If the coolant has antifreeze protection down to -35 ‡ (-37 †), the boiling point of the coolant during operation is approximately 266 ‡ (130 †). The antifreeze/corrosion inhibitor concentration in the engine cooling system should: Rbe at least 50%. This will protect the engine
cooling system against freezing down to approximately -35 ‡ (-37 †).
Rnot exceed 55% (antifreeze protection
down to -49 ‡ [-45 †]). Otherwise, heat will not be dissipated as effectively.
If the vehicle has lost coolant, add equal amounts of water and antifreeze/corrosion inhibitor. Mercedes-Benz recommends an antifreeze/ corrosion inhibitor concentrate in accordance with MB Specifications for Service Products 310.1. The coolant is checked with every maintenance interval at a qualified specialist workshop. i When the vehicle is first delivered, it is filled with a coolant mixture that ensures adequate antifreeze and corrosion protection.
Filling capacities
Model B 250 BlueEFFICIENCY
Capacity
Approx. 8.2 US qt
(7.8 l)
334 Service products and filling capacities
i Use antifreeze/corrosion inhibitor
according to MB approval 325.0 or 326.0.
Windshield washer system and headlamp cleaning system Important safety notes G WARNING Windshield washer concentrate is highly flammable. If it comes into contact with hot engine components or the exhaust system it could ignite. There is a risk of fire and injury. Make sure that no windshield washer concentrate is spilled next to the filler neck.
! Only use washer fluid that is suitable for plastic lamp lenses, e.g. MB SummerFit or MB WinterFit. Unsuitable washer fluid could damage the plastic lenses of the headlamps.
! Do not add distilled or de-ionized water to the washer fluid container. Otherwise, the level sensor may be damaged.
! Only MB SummerFit and MB WinterFit
washer fluid should be mixed together. The spray nozzles may otherwise become blocked.
When handling washer fluid, observe the important safety notes on service products (Y page 329). At temperatures above freezing: X Fill the washer fluid reservoir with a mixture of water and windshield washer fluid, e.g. MB SummerFit.
Add 1 part MB SummerFit to 100 parts water.
At temperatures below freezing: X Fill the washer fluid reservoir with a mixture
of water and washer fluid, e.g. MB WinterFit.
Adapt the mixing ratio to the outside temperature. RDown to 14 ‡ (Ò10 †): mix 1 part MB
WinterFit with 2 parts water.
RDown to Ò4 ‡ (Ò20 †): mix 1 part MB
WinterFit with 1 part water.
RDown to Ò20.2 ‡ (Ò29 †): mix 2 parts MB
WinterFit with 1 part water.
i Add windshield washer fluid, e.g. MB
SummerFit or MB WinterFit, to the washer fluid all year round.
Climate control system refrigerant Important safety notes Type of refrigerant The instruction label about types of refrigerants can be found on the radiator cross member.
Refrigerant R-134a ! Only use refrigerant R-134a and PAG oil
(part number A0019890803) which has been approved by Mercedes-Benz. The approved R-134a PAG oil may not be mixed with other conventional PAG oils. Otherwise, the climate control system may be damaged.
Service work, such as topping-up refrigerant or replacing components, may only be carried out by a qualified specialist workshop. All applicable regulations must be adhered to, SAE standard J639 included. Always have work on the climate control system carried out at a qualified specialist workshop.
Vehicle data 335
Vehicle data General notes Please note that for the specified vehicle data: Rthe heights specified may vary as a result
of:
tires load
- condition of the suspension - optional equipment
Dimensions and weights
Refrigerant instruction label
Example: refrigerant instruction label : Warning symbol ; Refrigerant filling capacity = Applicable SAE standards ? PAG oil part number A Type of refrigerant Warning symbols : indicate: Rpossible dangers Rthat it is necessary to have maintenance work carried out at a qualified specialist workshop
Filling capacities
Model
All models Refrigerant
PAG oil
Capacity 650 ± 10 g
(22.9 ± 0.4 oz)
120 g (4.2 oz)
B 250 BlueEFFICIEN CY
Maximum headroom
Opening height
73.8 in
78.0 in
(1874 mm)
(1981 mm)
B 250 BlueEFFICIENCY Vehicle length
Vehicle width including exterior mirrors Vehicle height
Wheelbase
171.6 in (4359 mm)
79.1 in
(2010 mm)
61.3 in
(1558 mm) 106.3 in (2699 mm)
336 Vehicle data
B 250 BlueEFFICIENCY Turning radius
Maximum roof load
36.1 ft (11.0 m) 165 lb (75.0 kg)
