2009 Mercedes-benz G Class Owners Manual

available at any authorized Mercedes-Benz Center. A placard with the recommended tire inflation pressures is located on the driver’s door B-pillar. Some vehicles may have supplemental tire inflation pressure information for driving at high speeds or for vehicle loads less than the maximum loaded vehicle condition. If such information is provided, it can be found on the placard located on the inside of the fuel

19 Exterior rear view mirrors folded out. 20 The GVWR is the maximum permissible vehicle weight. The Gross Vehicle Weight (GVW) comprises weight of vehicle including fuel, tools, spare wheel, installed accessories, passengers, cargo, and if applicable, trailer tongue load. The GVW must never exceed the GVWR. 21 The GAWR is the maximum permissible axle weight.

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Rims and tires

251

filler flap. The tire inflation pressure should be checked regularly and should only be adjusted on cold tires. Follow tire manufacturer’s maintenance recommendation included with the vehicle.

For information on recommended tire inflation pressure and supplemental tire inflation pressure information for special driving situations, see (Y page 154). i The following pages also list the approved rim and tire sizes for equipping your vehicle with winter tires. Winter tires are not

available as standard or optional factory equipment, but can be purchased from an authorized Mercedes-Benz Center. Equipping your vehicle with winter tires approved for your vehicle model may require the purchase of rims of the recommended size for use with these winter tires. This depends on vehicle model and the standard or optional factory- equipped wheel rim/tire configuration on your vehicle. For more information contact an authorized Mercedes-Benz Center.

Same size tires

18" wheels Rims (light alloy)

Wheel offset All-season tires22
Winter tires22,23

G 55 AMG 7.5 J x 18 H2
1.69 in (43 mm)

G 550
7.5 J x 18 H2
1.69 in (43 mm) 265/60 R18 110V M+S — —

265/60 R18 109H M+Si

19" wheels AMG rims (light alloy)

Wheel offset All-season tires22,24

G 55 AMG 9.5 J x 19 H2
1.97 in (50 mm) 275/55 R19 111V M+S

Spare wheel

Rim (light alloy) Wheel offset All-season tire25

G 550
7.5 J x 18 H2
1.69 in (43 mm) 265/60 R18 110V M+S

G 55 AMG 7.5 J x 18 H2
1.69 in (43 mm) 265/60 R18 110V M+S

22 Radial-ply tires. 23 Not available as factory equipment. 24 Must not be used with snow chains. 25 Radial-ply tire.

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252 Fuels, coolants, lubricants, etc.

Fuels, coolants, lubricants, etc. Capacities Vehicle components and their respective lubricants must match. Therefore only use products tested and approved by Mercedes- Benz. For information on tested and approved products, contact an authorized Mercedes- Benz Center or visit www.mbusa.com (USA only). G Warning! Comply with all valid regulations with respect to handling, storing, and disposing of service

fluids. Otherwise you could endanger persons or the environment. Keep service fluids out of the reach of children. For health reasons, you should prevent service fluids from coming into direct contact with your skin or clothing. If a service fluid is swallowed, contact a physician immediately.

Model

Capacity

Engine with oil filter

Automatic transmission

Front axle

G 550
G 55 AMG G 550
G 55 AMG G 550

G 55 AMG

9.5 US qt (9.0 l) 9.0 US qt (8.5 l) 9.5 US qt (9.0 l) 9.0 US qt (8.5 l) 1.5 US qt (1.4 l)

Rear axle

G 550

1.9 US qt (1.8 l)

G 55 AMG

Transfer case

All models

2.96 US qt (2.8 l)

Fuels, coolants, lubricants, etc. Approved engine oils

MB Automatic Transmission Fluid

Hypoid Gear Oil (SAE 85W-90) Hypoid Gear Oil (Castrol SAF-XJ) Hypoid Gear Oil (SAE 85W-90) Hypoid Gear Oil (Castrol SAF-XJ) MB part no. A 001 989 28 03 10
Brake fluid DOT 3+4, (SAE J 1703)

Differential lock mechanism Power steering

All models

All models

Brake system

All models

0.47 - 0.63 US qt (0.45 - 0.6 l)

approx. 1.06 US qt (1.0 l) MB Power Steering Fluid, or approved Dexron III ATF MB Brake Fluid (DOT 4+)

0.87 US qt (0.82 l)

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Model

Capacity

Fuels, coolants, lubricants, etc.

Cooling system G 550

Fuel tank

Fuel tank reserve Air conditioning system

Washer system and headlamp cleaning system

G 55 AMG

G 550
G 55 AMG All models

approx. 12.8 US qt (12.1 l) MB 325.0
approx. 13.4 US qt (12.7 l)

25.4 US gal (96.0 l) 25.1 US gal (95.0 l) approx. 5.3 US gal (20.0 l)

Anticorrosion/ Antifreeze Premium unleaded gasoline (Minimum Posted Octane 91
[Avg. of 96 RON/86 MON])

All models

—

All models

7.9 US qt (7.5 l)

R134a refrigerant and special PAG lubricant oil (never R 12) MB Windshield Washer Concentrate26
(Y page 257) Washer fluid mixing ratio (Y page 257)

Approved engine oils Engine oils are specifically tested for their suitability in our engines and durability for our service intervals. Therefore, only use approved engine oils and oil filters required for vehicles with Maintenance System. For a listing of approved engine oils and oil filters, contact an authorized Mercedes-Benz Center or visit www.mbusa.com (USA only). ! Using engine oils and oil filters of a

specification other than those expressly required for the Maintenance System, or changing of oil and oil filter at change intervals longer than those called for by the Maintenance System will result in engine or emission control system damage not covered by the Mercedes-Benz Limited Warranty.

Please follow Maintenance System recommendations for scheduled oil changes. Failure to do so will result in engine or emission control system damage not covered by the Mercedes-Benz Limited Warranty.

Mercedes-Benz recommends MOBIL OIL. Use the table below to determine the MB sheet number. Model

Engine, type 273
113

MB sheet number 229.5
229.5

G 550
G 55 AMG

i MB sheet numbers are printed on the

outside of oil containers.

26 Mixed with water or commercially available premixed washer solvent/antifreeze.

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254 Fuels, coolants, lubricants, etc.

Viscosity grades for engine oils Using the chart below, select oil viscosity according to the lowest air temperature expected before the next oil change.

Engine oil additives ! Do not blend oil additives with engine oil. They may damage the engine. Damage or malfunctions resulting from blending oil additives are not covered by the Mercedes- Benz Limited Warranty.

Air conditioning refrigerant R134a (HFC) refrigerant and special PAG lubricating oil are used in the air conditioning system. ! Never use R 12 (CFC) or mineral-based lubricating oil. Otherwise damage to the system will occur.

Brake fluid G Warning! During vehicle operation, the boiling point of the brake fluid is continuously reduced through the absorption of moisture from the atmosphere. Under extremely strenuous operating conditions, this moisture content can lead to the formation of bubbles in the system, thus reducing the system’s efficiency.

Therefore, the brake fluid must be replaced regularly. Refer to your vehicle’s Maintenance Booklet for replacement interval. Only brake fluid approved by Mercedes-Benz is recommended. Any authorized Mercedes- Benz Center will provide you with additional information.

Premium unleaded gasoline G Warning! Gasoline is highly flammable and poisonous. It burns violently and can cause serious personal injury. Never allow sparks, flames or smoking materials near gasoline! Turn off the engine before refueling. Whenever you are around gasoline, avoid inhaling fumes and any skin or clothing contact. Extinguish all smoking materials. Direct skin contact with fuels and the inhalation of fuel vapors are damaging your health.

! To maintain the engine’s durability and performance, premium unleaded gasoline must be used. If premium unleaded gasoline is not available and low octane gasoline is used, follow these precautions: RHave the fuel tank only partially filled

with unleaded regular gasoline and fill up with premium unleaded gasoline as soon as possible.

RAvoid full throttle driving and abrupt

acceleration.

RDo not exceed an engine speed of

3 000 rpm if the vehicle is loaded with a light load such as two persons and no luggage.

RDo not exceed 2/3 of maximum

accelerator pedal position if the vehicle

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is fully loaded or operating in mountainous terrain.

Fuel requirements Only use premium unleaded gasoline. The octane number (posted at the pump) must be 91 min. It is an average of both the Research Octane Number (RON) and the Motor Octane Number (MON): (RON+MON)/2. This is also known as the ANTI-KNOCK INDEX. Reformulated gasolines (RFG) and/or unleaded gasoline containing oxygenates such as ethanol, TAME, ETBE, IPA, IBA, and TBA can be used provided the ratio of any one of these oxygenates to gasoline does not exceed 10%; MTBE must not exceed 15%. The ratio of methanol to gasoline must not exceed 3% plus additional cosolvents. Using mixtures of ethanol and methanol is not allowed. Gasohol, which contains 10% ethanol and 90% unleaded gasoline, can be used. These blends must also meet all other fuel requirements, such as resistance to spark knock, boiling range, vapor pressure, etc.

Gasoline additives A major concern among engine manufacturers is carbon build-up caused by gasoline. Mercedes-Benz recommends only the use of quality gasoline containing additives that prevent the build-up of carbon deposits. After an extended period of using fuels without such additives carbon deposits can build up, especially on the intake valves and in the combustion area, leading to engine performance problems such as: RWarm-up hesitation RUnstable idle RKnocking/pinging

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255

RMisfire RPower loss In areas where carbon deposits may be encountered due to lack of availability of gasoline which contains these additives, Mercedes-Benz recommends the use of additives approved by us for use on Mercedes-Benz vehicles. Contact an authorized Mercedes-Benz Center or visit www.mbusa.com (USA only) for a listing of approved product(s). Follow directions on product label. Do not blend other fuel additives with fuel. This only results in unnecessary cost and may be harmful to the engine operation. ! Damage or malfunction resulting from

poor fuel quality or from blending additional fuel additives other than those tested and approved by us for use on Mercedes-Benz vehicles are not covered by the Mercedes- Benz Limited Warranty or by any pre-owned or Extended Limited warranties.

Coolants The engine coolant is a mixture of water and anticorrosion/antifreeze, which provides: RCorrosion protection RFreeze protection RBoiling protection (by increasing the boiling

point)

The cooling system was filled at the factory with a coolant providing freeze protection to approximately -35‡ (-37†) and corrosion protection. ! Add premixed coolant solution only.

Adding water and MB 325.0 Anticorrosion/ Antifreeze separately from each other, could cause engine damage not covered by the Mercedes-Benz Limited Warranty.

If the antifreeze mixture is effective to -35‡ (-37†), the boiling point of the coolant in the

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256 Fuels, coolants, lubricants, etc.

Anticorrosion/antifreeze Your vehicle contains a number of aluminum parts. The use of aluminum components in motor vehicle engines necessitates that anticorrosion/antifreeze coolant used in such engines be specifically formulated to protect the aluminum parts. Failure to use such anticorrosion/antifreeze coolant will result in a significantly shortened service life. Therefore, the following product is strongly recommended for use in your vehicle: MB 325.0 Anticorrosion/Antifreeze agent. Before the start of the winter season (or once a year in hot southern regions), you should have the anticorrosion/antifreeze concentration checked. The coolant is also regularly checked each time you bring your vehicle to an authorized Mercedes-Benz Center for service.

pressurized cooling system is reached at approximately 266‡ (130†). The coolant solution must be used year round to provide the necessary corrosion protection and increase boil-over protection. Refer to the Maintenance Booklet for replacement interval. Coolant system design and coolant used determine the replacement interval. The replacement interval published in the Maintenance Booklet is only applicable if MB 325.0 Anticorrosion/Antifreeze solution or other Mercedes-Benz approved products of equal specification are used to renew the coolant concentration or bring it back up to the proper level. For information on other Mercedes-Benz approved products of equal specification, contact an authorized Mercedes-Benz Center or visit www.mbusa.com (USA only). To provide important corrosion protection, the solution must be at least 50% anticorrosion/antifreeze (equivalent to freeze protection to approximately -35‡ [-37†]). If you use a solution that is more than 55% anticorrosion/antifreeze (freeze protection to approximately -49‡ [-45†]), the engine temperature will increase due to the lower heat transfer capability of the solution. Therefore, do not use more than this amount of anticorrosion/antifreeze. If the coolant level is low, water and MB 325.0
Anticorrosion/Antifreeze should be used to bring it up to the proper level (have cooling system checked for signs of leakage). Please make sure the mixture is in accordance with label instructions. The water in the cooling system must meet minimum requirements, which are usually satisfied by normal drinking water. If you are not sure about the water quality, contact an authorized Mercedes-Benz Center.

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257

Cooling system

Model

G 550
G 55 AMG

Approximate freeze protection -35‡ (-37†) 6.4 US qt (6.05 l) 6.7 US qt (6.35 l)

-49‡ (-45†) 7.1 US qt (6.7 l) 7.4 US qt (7.0 l)

Washer system and headlamp cleaning system G Warning! Washer solvent/antifreeze is highly flammable. Do not spill washer solvent/ antifreeze on hot engine parts, because it may ignite and burn. You could be seriously burned.

X Use MB Windshield Washer Concentrate

“MB SummerFit”.

X Mix with water for temperatures above

freezing point.

X Mix with commercially available premixed

washer solvent/antifreeze for temperatures below freezing point.

Washer fluid mixing ratio For temperatures above freezing point: 1 part “MB SummerFit” to 100 parts water (1.34 fl oz [40 ml] “MB SummerFit” to 1 gal [4.0 l] water) For temperatures below freezing point: 1 part “MB SummerFit” to 100 parts solvent (1.34 fl oz [40 ml] “MB SummerFit” to 1 gal [4.0 l] solvent)

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Service and Literature Your authorized Mercedes-Benz Center has trained technicians and Genuine Mercedes- Benz Parts to service your vehicle properly. For expert advice and quality service, contact an authorized Mercedes-Benz Center. If you are interested in obtaining service literature for your vehicle, please contact an authorized Mercedes-Benz Center. We consider this the best way for you to obtain accurate information for your vehicle. For further information you can find us on the Mercedes-Benz web-site www.mbusa.com (USA only) or www.mercedes-benz.ca (Canada only). G Warning! To help avoid personal injury, be extremely careful when performing any service work or repairs. Improper or incomplete service or the use of incorrect or inappropriate parts or materials may damage the vehicle or its equipment, which may in turn result in personal injury. If you have any questions about carrying out any type of service, turn to the advice of an authorized Mercedes-Benz Center. We reserve the right to make changes in design and equipment. Therefore, information, illustrations and descriptions in this Operator’s Manual might differ from your vehicle. Reprinting, translation and copying, even of excerpts, is not permitted without our prior authorization in writing. Press time January 15, 2009
GSP/OIS Printed in U. S. A.

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É4635844182xËÍ 4635844182

Order no. 6515 4101 13 Part no. 463 584 41 82 Edition B 2009