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Dialing a number from the phone book If your mobile phone is able to receive calls, you can search for and dial a number from the phone book in COMAND at any time. X Copy the telephone book of the mobile
phone into the audio system or to COMAND (see the separate operating instructions). Copy the telephone book of the mobile phone to COMAND (see the separate operating instructions). X Press the = or ; button on the steering wheel to select the Tel menu.
Menus and submenus
205
X Press the 9, : or a button to call
up the phone book.
X Press the 9 or : button to select the
desired name. To start scrolling rapidly, press and hold the 9 or : button for longer than one second. After a short time, the rapid scroll speeds up. Rapid scrolling stops when you release the button or reach the end of the list.
X If only one telephone number is stored for a name: press the 6 or a button to start dialing.
or X If there is more than one number for a particular name: press the 6 or a button to display the numbers.
X Press the 9 or : button to select the
number you want to dial.
X Press the 6 or a button to start
dialing.
or X If you do not want to make a call: press
the ~ or % button.
Redialing The on-board computer saves the last names or numbers dialed in the redial memory. X Press the = or ; button on the steering wheel to select the Tel menu. X Press the 6 button to switch to the
redial memory.
X Press the 9 or : button to select the
desired name or number.
X Press the 6 or a button to start
dialing.
or X If you do not want to make a call: press
the ~ or % button.
206 Menus and submenus
Assistance menu Introduction
In the DriveAssist. menu you can: Rshow the distance display Ractivate/deactivate ESP® Ractivate/deactivate PRE-SAFE® Brake Ractivate/deactivate ATTENTION ASSIST Ractivate/deactivate Blind Spot Assist or
Active Blind Spot Assist
Ractivate/deactivate Lane Keeping Assist or
Active Lane Keeping Assist
Showing the distance display This function is only available with DISTRONIC PLUS. X Press the = or ; button on the steering wheel to select the DriveAssist menu. X Press the 9 or : button to select Distance Display. X Press a.
The DISTRONIC PLUS distance display (Y page 172) appears in the multifunction display.
Deactivating/activating ESP® G WARNING Never switch off the ESP when you see the ESP warning lamp ä flashing in the instrument cluster. In this case proceed as follows: RWhen driving off, apply as little throttle as
possible.
RWhile driving, ease up on the accelerator
pedal.
RAdapt your speed and driving style to the
prevailing road conditions.
Failure to observe these guidelines could cause the vehicle to skid. The ESP cannot prevent accidents resulting from excessive speed.
For further information about ESP®, see (Y page 63). X Start the engine. X Press = or ; on the steering wheel to select the DriveAssist menu. X Press the 9 or : button to select ESP. X Press the a button. X To deactivate: press a again.
The å warning lamp in the instrument cluster comes on. G WARNING When the å ESP OFF warning lamp lights up, ESP is switched off. When the ä ESP warning lamp and the å ESP OFF warning lamp are on continuously, ESP is not operational due to a malfunction. When ESP is switched off or not operational, the vehicle's stability during standard driving maneuvers is reduced. Adapt your driving style to suit the prevailing road conditions/weather conditions and to the non-operating status of ESP.
X To activate: press a again.
The å warning lamp in the instrument cluster goes out.
Activating/deactivating PRE-SAFE® Brake PRE-SAFE® Brake is only available in vehicles with DISTRONIC PLUS. X Press the = or ; button on the steering wheel to select the DriveAssist menu. X Press 9 or : to select PRE-SAFE Brake. X Press a.
The current selection is displayed.
X To activate/deactivate: press a
again.
When PRE-SAFE® Brake (Y page 65) is activated, the multifunction display shows the Ä symbol as long as the HOLD function is not activated (Y page 176). Vehicles with Parking Guidance: if PARKTRONIC is activated and you are driving at a speed under 22 mph (35 km/h) the j symbol for Parking Guidance is displayed instead of the Ä symbol.
Activating/deactivating ATTENTION ASSIST X Press the = or ; button on the steering wheel to select the DriveAssist menu. X Press the 9 or : button to select Attention Asst.. X Press a.
The current selection is displayed.
X To activate/deactivate: press a
again.
When ATTENTION ASSIST (Y page 185) is activated, the À symbol appears in the multifunction display when the ignition is on.
Menus and submenus
207
Activating/deactivating Blind Spot Assist You can use the Blind Spot Asst. function to activate or deactivate Blind Spot Assist (Y page 186) or Active Blind Spot Assist (Y page 189). X Press = or ; on the steering wheel to select the DriveAssist menu. X Press 9 or : to select Blind Spot Asst.. X Press a.
If the function is activated, the monitored areas are shown in red in the multifunction display.
X To activate/deactivate: press a
again.
Activating/deactivating Lane Keeping Assist You can use the Lane Keep. Asst. function to activate/deactivate Lane Keeping Assist (Y page 188) or Active Lane Keeping Assist (Y page 192). X Press the = or ; button on the steering wheel to select the DriveAssist menu. X Press the 9 or : button to select Lane Keep. Asst.. X Press a.
If the function is activated, the road markings are shown in red in the multifunction display.
X To activate/deactivate: press a
again.
If Lane Keeping Assist or Active Lane keeping Assist is activated, the multifunction display shows the à symbol when the ignition is switched on.
208 Menus and submenus
Service menu
In the Serv. menu you can: Rcall up display messages (Y page 213) Rrestart the tire pressure loss warning
system (Canada only) (Y page 315)
Rcheck the tire pressure electronically (USA
only) (Y page 317)
Rcall up the service due date (Y page 278)
Settings menu Introduction
The Sett. menu can be used for: Rchanging the instrument cluster settings Rchanging the light settings Rchanging the vehicle settings Rchanging the convenience settings Rrestoring the factory settings
Instrument cluster Selecting the unit of measurement for distance The Display Unit Speed-/Odometer: function allows you to choose whether certain displays appear in kilometers or miles.
The selected unit of measurement for distance applies to: Rthe digital speedometer in the Trip menu Rthe odometer and the trip odometer Rthe trip computer Rthe current consumption and the range Rthe navigation instruction in the Navi menu RDISTRONIC PLUS RASSYST PLUS service interval display X Press the = or ; button on the steering wheel to select the Settings menu. X Press the : or 9 button to select the Instr. cluster submenu. X Press the a button to confirm. X Press the : or 9 button to select the Display Unit Speed-/Odometer function. You will see the selected setting: km or miles. X Press the a button to save the setting.
Selecting the permanent display function The Permanent Display: function allows you to choose whether the multifunction display always shows the outside temperature or the speed in km/h (USA) or mph (Canada). X Press the = or ; button on the steering wheel to select the Settings menu. X Press the : or 9 button to select the Instr. cluster submenu. X Press the a button to confirm. X Press the : or 9 button to select the Permanent display function. You will see the selected setting Outside Temperature or Speedometer [km/h]:. X Press the a button to save the setting.
Lights Switching the daytime running lamps on/ off This function is not available in Canada. If you have activated the Day Lights function and the light switch is in the c or à position, the daytime running lamps are switched on automatically during the day when the engine is running. In the dark, the following also light up: Rthe low-beam headlamps Rthe parking lamps Rthe tail lamps Rthe license plate lamp Rthe side marker lamps X Press the = or ; button on the steering wheel to select the Sett. menu. X Press the : or 9 button to select the Lights submenu. X Press the a button to confirm. X Press the : or 9 button to select the Day Lights function. If the Daytime Running Lights: function has been switched on, the cone of light and the W symbol in the multifunction display are shown in red.
X Press the a button to save the setting.
Switching Adaptive Highbeam Assist on/ off X Press the = or ; button on the steering wheel to select the Sett. menu. X Press the : or 9 button to select the Lights submenu. X Press the a button to confirm. X Press : or 9 to select the Adapt. Highbeam function. If the Adapt. Highbeam function has been switched on, the cone of light and the _ symbol in the multifunction display are shown in red.
X Press the a button to save the setting.
Menus and submenus
209
Activating/deactivating surround lighting and exterior lighting delayed switch-off If you have activated the Surround Lighting function and the light switch is in the c or à position, the following functions are active when it is dark: RSurround lighting: the exterior lighting
remains lit for 40 seconds after unlocking with the key. The exterior lighting switches off when you open the driver's door.
RExterior lighting delayed switch-off: the exterior lighting remains lit for 60 seconds after the engine has been switched off. If you close all the doors, the exterior lighting goes off after 15 seconds. If you activate the Surround Lighting function, the following light up depending on the vehicle's equipment: Rthe parking lamps Rthe fog lamps Rthe daytime running lamps Rthe side marker lamps Rthe surround lighting in the exterior mirrors X Press the = or ; button on the steering wheel to select the Sett. menu. X Press the : or 9 button to select the Lights submenu. X Press the a button to confirm. X Press the : or 9 button to select the Surround lighting function. When the Surround Lighting function is activated, the light cone and the area around the vehicle are displayed in red in the multifunction display.
X Press the a button to save the setting.
210 Menus and submenus
Deactivating delayed switch-off of the exterior lighting temporarily: X Before leaving the vehicle, turn the
SmartKey to position 0 in the ignition lock.
X Turn the SmartKey to position 2 in the
ignition lock and back to position 0. The exterior lighting delayed switch-off is deactivated.
Delayed switch-off of the exterior lighting is reactivated the next time you start the engine. Activating/deactivating the interior lighting delayed switch-off If you activate the Light. delay function, the interior lighting remains on for 20
seconds after you remove the SmartKey from the ignition lock. X Press the = or ; button on the steering wheel to select the Settings menu. X Press the : or 9 button to select the Lights submenu. X Press the a button to confirm. X Press the : or 9 button to select the Light. Delay function. When the Light. Delay function is activated, the vehicle interior is displayed in red in the multifunction display.X Press the a button to save the setting.
Vehicle Activating/deactivating the automatic door locking feature If you select the Auto. Door Locks function, the vehicle is centrally locked above a speed of around 9 mph (15 km/h). i For further information on the automatic
locking feature, see (Y page 78).
X Press the = or ; button on the steering wheel to select the Settings menu. X Press the : or 9 button to select the Vehicle submenu. X Press the a button to confirm. X Press the : or 9 button to select the Auto. Door Locks function. When the Auto. Door Locks function is activated, the vehicle doors are displayed in red in the multifunction display.
X Press the a button to save the setting.
Activating/deactivating the acoustic locking verification signal If you activate the Acoustic Lock function, an audible signal sounds depending on the vehicle's date of manufacture: Rwhen locking
or
Ronce when unlocking and three times when
locking X Press the = or ; button on the steering wheel to select the Settings menu. X Press the : or 9 button to select the Vehicle submenu. X Press the a button to confirm. X Press the : or 9 button to select the Acoustic Lock function. If the Acoustic Lock function is activated, the & symbol in the multifunction display lights up red.
X Press the a button to save the setting.
Activating/deactivating the radar sensor system The following systems are switched off when the radar sensor system is deactivated: RDISTRONIC PLUS (Y page 166) RBAS PLUS (Y page 62) RPRE-SAFE® Brake (Y page 65)
Menus and submenus
211
RBlind Spot Assist (Y page 186) RActive Blind Spot Assist (Y page 189) i USA only: This device has been approved by the FCC as a "Vehicular Radar System". The radar sensor is intended for use in an automotive radar system only. Removal, tampering, or altering of the device will void any warranties, and is not permitted by the FCC. Do not tamper with, alter, or use in any non-approved way. Any unauthorized modification to this device could void the user's authority to operate the equipment.
i Canada only:
This device complies with RSS-210 of Industry Canada. Operation is subject to the following two conditions: 1. This device may not cause harmful interference, and 2. this device must accept any interference received, including interference that may cause undesired operation. Any unauthorized modification to this device could void the user's authority to operate the equipment. X Press the = or ; button on the steering wheel to select the Settings menu. X Press the : or 9 button to select the Vehicle submenu. X Press the a button to confirm. X Press the 9 or : button to select Radar Sensor (See Oper. Manual):. You will see the selected setting: Enabled or Disabled. X Press the a button to save the setting.
Convenience Activating/deactivating the EASY- ENTRY/EXIT feature You can use the Easy Entry/Exit: function to activate or deactivate the EASY ENTRY/ EXIT feature (Y page 109).
G WARNING You must make sure no one can become trapped or injured by the moving steering wheel when the easy-entry/exit feature is activated. To stop steering wheel movement, move steering wheel adjustment lever or press one of the memory position buttons. Do not leave children unattended in the vehicle, or with access to an unlocked vehicle. Children could open the driver's door and unintentionally activate the easy-entry/exit feature, which could result in an accident and/or serious personal injury.
X Press the = or ; button on the steering wheel to select the Sett. menu. X Press the : or 9 button to select the Convenience submenu. X Press the a button to confirm. X Press the : or 9 button to select the Easy Entry/Exit function. If the Easy Entry/Exit function is activated, the vehicle steering wheel is displayed in red in the multifunction display.
X Press the a button to save the setting.
Switching the belt adjustment on/off For further information on belt adjustment (Y page 53). X Press the = or ; button on the steering wheel to select the Settings menu. X Press the : or 9 button to select the Convenience submenu. X Press the a button to confirm. X Press the : or 9 button to select the Belt Adjustment function. When the Belt Adjustment function is activated, the vehicle seat belt is displayed in red in the multifunction display.
X Press the a button to save the setting.
212 Menus and submenus
X Press the : or 9 button to select No or Yes. X Press the a button to confirm the selection. If you select Yes, the multifunction display shows a confirmation message.
Switching the Fold in mirrors when locking function on/off This function is only available in Canada. If you switch on the Auto. Mirror Folding function, the exterior mirrors fold in when you lock the vehicle. If you unlock the vehicle and then open a door, the exterior mirrors fold out again. If you have switched the function on and you fold the exterior mirrors in using the button on the door (Y page 111), they will not fold out automatically. The exterior mirrors can then only be folded out using the button on the door. X Press the = or ; button on the steering wheel to select the Sett. menu. X Press the : or 9 button to select the Convenience submenu. X Press the a button to confirm. X Press the : or 9 to select the Auto. Mirror Folding function. If the Auto. Mirror Folding function is activated, the vehicle's exterior mirror is displayed in red in the multifunction display.
X Press the a button to save the setting.
Resetting to factory settings For safety reasons, the Day Lights function in the Lights submenu is only reset when the vehicle is stationary. X Press the = or ; button on the steering wheel to select the Settings menu. X Press the : or 9 button to select the Factory Setting submenu. X Press the a button to confirm. The Reset All Settings? message appears.
Display messages
213
Display messages General notes G WARNING All categories of messages contain important information which should be taken note of and, where a malfunction is indicated, addressed as soon as possible at an authorized Mercedes-Benz Center. Failure to repair the condition noted may cause damage not covered by the Mercedes-Benz Limited Warranty, or result in property damage or personal injury.
Display messages appear in the multifunction display. Display messages with graphic displays may be shown in simplified form in the Operator's Manual and may differ from the messages shown in the multifunction display. Please respond in accordance with the display messages and follow the additional notes in this Operator's Manual. Certain display messages are accompanied by an audible warning tone or a continuous tone. When you stop and park the vehicle, please observe the notes on the HOLD function (Y page 176) and parking (Y page 158).
Hiding display messages You can hide some display messages with a low priority. X Press the a or % button on the steering wheel to hide the display message.
The display message is cleared.
Display messages with a high priority are shown in red. You cannot hide display messages of the highest priority. The multifunction display shows these messages continuously until the causes for the messages have been remedied.
Message memory The on-board computer saves certain display messages. You can call up the display messages in the message memory. X Press the = or ; button on the steering wheel to select the Serv. menu. If there are display messages, the multifunction display shows, for example, 2 Messages. X Press the 9 or : button to select the entry, e.g. 2 Messages. X Confirm with a. X Press the 9 or : button to scroll through the display messages. When the ignition is switched off, all display messages are deleted apart from some high- priority display messages. Once the causes of the high-priority display messages have been rectified, the corresponding display messages are also deleted.
214 Display messages
Safety systems Display messages !÷ Currently Unavailable See Operator's Manual
!÷ Inoperative See Operator's Manual
Possible causes/consequences and M Solutions G Risk of accident ABS, ESP®, BAS, PRE-SAFE®, the HOLD function and hill start assist are temporarily unavailable. BAS PLUS and PRE-SAFE® Brake may also have failed. In addition, the ä, å and ! warning lamps light up in the instrument cluster. For example, the on-board voltage may be insufficient. ATTENTION ASSIST is deactivated. The brake system continues to function normally, but without the functions listed above. The wheels could therefore lock if you brake hard, for example. X Drive on carefully.
If the display message disappears, the functions mentioned above are available again.
If the display message continues to be displayed: X Drive on carefully. X Visit a qualified specialist workshop. G Risk of accident ABS, ESP®, BAS, PRE-SAFE®, the HOLD function and hill start assist are unavailable due to a malfunction. BAS PLUS and PRE-SAFE® Brake may also have failed. The $ (USA only)/ J (Canada only), ä, å and ! warning lamps in the instrument cluster also light up. The brake system continues to function normally, but without the functions listed above. The wheels could therefore lock if you brake hard, for example. ATTENTION ASSIST is deactivated. X Drive on carefully. X Visit a qualified specialist workshop immediately.
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215
Possible causes/consequences and M Solutions G Risk of accident ESP®, BAS, PRE-SAFE®, the HOLD function and hill start assist are unavailable due to a malfunction. BAS PLUS and PRE-SAFE® Brake may also have failed. In addition, the ä and å warning lamps light up in the instrument cluster. ATTENTION ASSIST is deactivated. The brake system continues to function normally, but without the functions listed above. X Drive on carefully. X Visit a qualified specialist workshop. G Risk of accident EBD (electronic brake force distribution), ABS, ESP®, BAS, PRE- SAFE®, the HOLD function and hill start assist are unavailable due to a malfunction. BAS PLUS and PRE-SAFE® Brake may also have failed. In addition, the ä, å and ! warning lamps light up in the instrument cluster and a warning tone sounds. ATTENTION ASSIST is deactivated. The brake system continues to function normally, but without the functions listed above. The wheels could therefore lock if you brake hard, for example. X Drive on carefully. X Visit a qualified specialist workshop immediately.
The brake pads/linings have reached their wear limit. X Visit a qualified specialist workshop.
You are driving with the parking brake applied. A warning tone also sounds. X Release the parking brake.
Display messages ÷ Inoperative See Operator's Manual
T! ÷ Inoperative See Operator's Manual
Check Brake Pad Wear $(USA only)J(Canada only) Release Parking Brake
216 Display messages
Display messages $(USA only)J(Canada only) Brake Immediately
$(USA only)J(Canada only) Check Brake Fluid Level
Possible causes/consequences and M Solutions A malfunction has occurred while the HOLD function or DISTRONIC PLUS is active. A tone may also sound at regular intervals. The tone becomes louder if you attempt to lock the vehicle. You cannot start the engine. X Paying attention to the traffic situation, immediately depress the
brake pedal firmly and hold until the display message disappears.
X Prevent the vehicle from rolling away before you leave it
(Y page 292). You can restart the engine. G Risk of accident There is not enough brake fluid in the brake fluid reservoir. Additionally, the red $ (USA only)/ J (Canada only) warning lamp lights up in the instrument cluster and a warning tone sounds. X Pull over and stop the vehicle safely as soon as possible, paying attention to road and traffic conditions. Do not continue driving under any circumstances. X Engage the parking brake. X Consult a qualified specialist workshop. X Do not add brake fluid. This will not rectify the malfunction.
G WARNING Driving with the message Check Brake Fluid Level displayed can result in an accident. Have your brake system checked immediately. Do not add brake fluid before checking the brake system. Overfilling the brake fluid reservoir can result in spilling brake fluid on hot engine parts and the brake fluid catching fire. You can be seriously burned.
Display messages Tele Aid Inoperative
PRE-SAFE Inoperative See Operator's Manual
PRE-SAFE Function Currently Limited See Oper. Manual
Display messages
217
Possible causes/consequences and M Solutions USA only: one or more of the main functions in the mbrace system are malfunctioning. Canada only: one or more of the main functions of the TELEAID system are malfunctioning. X USA only: have the mbrace system checked at a qualified
specialist workshop.
X Canada only: have the TELEAID system checked at a qualified
specialist workshop.
G Risk of injury Important functions of PRE-SAFE® have failed. All other occupant safety systems, e.g. air bags, remain available. X Visit a qualified specialist workshop immediately. G Risk of accident PRE-SAFE® Brake is temporarily inoperative if: Rthe DISTRONIC PLUS cover in the radiator grill is dirty. Rthe sensors in the bumpers are dirty. Rits function is impaired due to heavy rain or snow. Rthe radar sensor system is temporarily inoperative, e.g. due to
electromagnetic radiation emitted by nearby TV or radio stations or other sources of electromagnetic radiation. Rthe system is outside the operating temperature range. Rthe on-board voltage is too low. PRE-SAFE® Brake is operational again and the display message disappears if: Rthe dirt (e.g. slush) drops away while the vehicle is in motion. Rthe system detects that the sensors are fully available again. Rthe system is within the operating temperature range. If the display message continues to be displayed: X Clean the DISTRONIC PLUS cover in the radiator grill
(Y page 284).
X Clean the bumpers (Y page 284). X Restart the engine. X Wait until the battery is sufficiently charged.
218 Display messages
Display messages PRE-SAFE Functions Limited See Operator's Manual
Malfunction Service Required
SRS Malfunction Service Required
Front Left Malfunction Service Required or Front Right Malfunction Service Required Rear Left Malfunction Service Required or Rear Right Malfunction Service Required Left Side Curtain Airbag Malfunction Service Required or Right Side Curtain Airbag Malfunction Service Required
Possible causes/consequences and M Solutions G Risk of accident PRE-SAFE® Brake is defective. BAS PLUS or the distance warning signal may also have failed. X Visit a qualified specialist workshop. G Risk of injury Cabriolet: the roll bars are defective. X Visit a qualified specialist workshop immediately. G Risk of injury There is a malfunction in the SRS (Supplemental Restraint System). The 6 warning lamp also lights up in the instrument cluster. X Visit a qualified specialist workshop. G Risk of injury SRS has malfunctioned at the front on the left or right. The 6
warning lamp also lights up in the instrument cluster. X Visit a qualified specialist workshop.G Risk of injury SRS has malfunctioned at the rear on the left or right. The 6
warning lamp also lights up in the instrument cluster. X Visit a qualified specialist workshop.G Risk of injury There is a malfunction in the left-hand and/or right-hand window curtain air bag. The 6 warning lamp also lights up in the instrument cluster. X Visit a qualified specialist workshop.
Display messages
219
G WARNING In the event a malfunction of the SRS is indicated as outlined above, the SRS may not be operational. For your safety, we strongly recommend that you contact an authorized Mercedes-Benz Center immediately to have the system checked. Otherwise the SRS may not be activated when needed in an accident, which could result in serious or fatal injury, or it might deploy unexpectedly and unnecessarily which could also result in injury.
220 Display messages
Display messages Front Passenger Airbag Enabled See Operator's Manual
Possible causes/consequences and M Solutions The front-passenger air bag is enabled during the journey, even though: Ra child, a small adult or an object weighing less than the
system's weight threshold is located on the front-passenger seat.
Rthe front-passenger seat is unoccupied. The system may detect objects or forces applying additional weight on the seat. X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Engage the parking brake. X Switch off the ignition. X Open the front-passenger door. X Remove the child and the child restraint system from the front-
passenger seat.
X If necessary, secure the child in a child restraint system on a
suitable rear seat.
X Make sure that there are no objects on the seat adding to the
weight. The system may otherwise detect the additional weight and interpret the seat occupant's weight as greater than it actually is.
X Keep the seat unoccupied, close the front-passenger door and
switch on the ignition.
Observe the 45(Y page 43) indicator lamp and the multifunction display and check the following: Seat unoccupied and ignition switched on: Rthe 45 indicator lamp must light up and remain lit. When the indicator lamp is on, OCS (Y page 43) has deactivated the front-passenger air bag. Rthe Front Passenger Airbag Enabled See Operator's Manual or Front Passenger Airbag Disabl'd See Operator's Manual display messages must not appear in the multifunction display. Wait for a period of at least 60 seconds until the necessary system checks have been completed and to make sure that the display messages do not appear in the multifunction display.
If these conditions are fulfilled, the front-passenger seat can be occupied again. Whether the 45 indicator lamp remains lit or goes out depends on how OCS classifies the occupant. If the conditions are not fulfilled, the system is not operating correctly.
Display messages
221
Display messages
Possible causes/consequences and M Solutions X Visit a qualified specialist workshop immediately.
G WARNING If the 45 indicator lamp remains off even after performing the above corrective steps, do not have any children 12 years old and under and other small individuals use the front-passenger seat until the system has been repaired.
Display messages Front Passenger Airbag Disabl'd See Operator's Manual
Possible causes/consequences and M Solutions The front-passenger air bag is deactivated during the journey even though an adult or a person larger than a certain size is occupying the front-passenger seat. If additional forces are applied to the seat, the system may interpret the occupant's weight as lower than it actually is. X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Engage the parking brake. X Switch off the ignition. X Have the occupant get out of the vehicle. X Keep the seat unoccupied, close the front-passenger door and
switch on the ignition.
Observe the 45(Y page 43) indicator lamp and the multifunction display and check the following: Seat unoccupied and ignition switched on: Rthe 45 indicator lamp must light up and remain lit. When the indicator lamp is on, OCS (Y page 43) has deactivated the front-passenger air bag. Rthe Front Passenger Airbag Enabled See Operator's Manual or Front Passenger Airbag Disabled See Operator's Manual display messages must not appear in the multifunction display. Wait for a period of at least 60 seconds until the necessary system checks have been completed and to make sure that the display messages do not appear in the multifunction display.
If these conditions are fulfilled, the front-passenger seat can be occupied again. Whether the 45 indicator lamp remains lit or goes out depends on how OCS classifies the occupant. If the conditions are not fulfilled, the system is not operating correctly. X Visit a qualified specialist workshop immediately.
222 Display messages
G WARNING If the 45 indicator lamp remains lit with an adult occupant on the front-passenger seat even after performing the above corrective steps, do not have any passenger use the front- passenger seat until the system has been repaired.
Lights i Display messages about LEDs:
Possible causes/consequences and M Solutions The left or right-hand cornering light is defective. X Check whether you are permitted to change the bulb yourself
(Y page 122).
This display message will only appear if all LEDs have failed. Display messages Check Left Cornering LightorCheck Right Cornering Light Check Left Low BeamorCheck Right Low Beam
or X Visit a qualified specialist workshop.
or X Visit a qualified specialist workshop.
(Y page 122).
The left or right-hand low-beam headlamp is defective. X Check whether you are permitted to change the bulb yourself
Check Rear Left Turn SignalorCheck Rear Right Turn Signal Check Front Left Turn SignalorCheck Front Right Turn Signal Check Left Mirror Turn SignalorCheck Right Mirror Turn Signal
The rear left-hand or rear right-hand turn signal is defective. X Check whether you are permitted to change the bulb yourself
(Y page 122).
or X Visit a qualified specialist workshop.
The front left-hand or front right-hand turn signal is defective. X Check whether you are permitted to change the bulb yourself
(Y page 122).
or X Visit a qualified specialist workshop. The turn signal in the left-hand or right-hand exterior mirror is defective. X Check whether you are permitted to change the bulb yourself
(Y page 122).
or X Visit a qualified specialist workshop.
Display messages Check Center Brake Lamp
Check Left Tail and Brake LampsorCheck Right Tail and Brake Lamps Check Left High BeamorCheck Right High Beam
Check Left License Plate LamporCheck Right License Plate Lamp Check Left Fog LamporCheck Right Fog Lamp
Rear Fog Lamp
Display messages
223
Possible causes/consequences and M Solutions The high-mounted brake lamp is faulty. X Check whether you are permitted to change the bulb yourself
(Y page 122).
or X Visit a qualified specialist workshop.
The left or right-hand tail lamp/brake lamp is defective. X Check whether you are permitted to change the bulb yourself
(Y page 122).
or X Visit a qualified specialist workshop.
The left or right-hand high beam is defective. X Check whether you are permitted to change the bulb yourself
(Y page 122).
or X Visit a qualified specialist workshop.
The left or right-hand license plate lamp is defective. X Check whether you are permitted to change the bulb yourself
(Y page 122).
or X Visit a qualified specialist workshop.
The left-hand or right-hand front fog lamp is defective. X Check whether you are permitted to change the bulb yourself
(Y page 122).
or X Visit a qualified specialist workshop.
The rear fog lamp is defective. X Check whether you are permitted to change the bulb yourself
(Y page 122).
or X Visit a qualified specialist workshop.
224 Display messages
Display messages Check Front Left Parking LamporCheck Front Right Parking Lamp Check Left Reverse LamporCheck Right Reverse Lamp
Check Front Left Sidemarker LamporCheck Front Right Sidemarker Lamp Check Rear Left Sidemarker LamporCheck Rear Right Sidemarker Lamp Check Left Daytime Running LightorCheck Right Daytime Running Light Active Headlamps Inoperative Malfunction See Operator's Manual
Possible causes/consequences and M Solutions The front left or front right parking or standing lamp is defective. X Check whether you are permitted to change the bulb yourself
(Y page 122).
or X Visit a qualified specialist workshop.
The left or right-hand backup lamp is defective. X Check whether you are permitted to change the bulb yourself
(Y page 122).
or X Visit a qualified specialist workshop.
The left or right front side marker lamp is defective. X Check whether you are permitted to change the bulb yourself
(Y page 122).
or X Visit a qualified specialist workshop.
The rear left or right side marker lamp is defective. X Check whether you are permitted to change the bulb yourself
(Y page 122).
or X Visit a qualified specialist workshop.
The left or right-hand daytime running lamp is defective. X Check whether you are permitted to change the bulb yourself
(Y page 122).
or X Visit a qualified specialist workshop.
The active light function is defective. X Visit a qualified specialist workshop.
The exterior lighting is defective. X Visit a qualified specialist workshop.
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Display messages AUTO Lamp Function Inoperative Switch Off Lights Adaptive Highbeam Assist Inoperative Adaptive Highbeam Assist Currently Unavailable See Operator's Manual
Possible causes/consequences and M Solutions The light sensor is defective. X Visit a qualified specialist workshop.
The lights are still switched on when you leave the vehicle. A warning tone also sounds. X Turn the light switch to c or Ã.
Adaptive Highbeam Assist is faulty. X Visit a qualified specialist workshop.
Adaptive Highbeam Assist is deactivated and temporarily inoperative. Possible causes are: Rthe windshield in the camera's field of vision is dirty. Rvisibility is impaired due to heavy rain, snow or fog. X Clean the windshield. If the system detects that the camera is fully functional again, the Adaptive Highbeam Assist Now Available display message is shown. Adaptive Highbeam Assist is operational again.
Engine Display messages Check Coolant Level See Operator's Manual
Possible causes/consequences and M Solutions The coolant level is too low. X Add coolant, observing the warning notes when doing so
(Y page 276).
X If coolant needs to be added more often than usual, have the
engine coolant system checked at a qualified specialist workshop.
G WARNING Do not spill antifreeze on hot engine parts. Antifreeze contains ethylene glycol which may burn if it comes into contact with hot engine parts. You could be seriously burned.
! The coolant level is too low. Avoid making long journeys with too little coolant in the cooling
system. The engine will otherwise be damaged. The display messages and the corresponding symbol that indicate that the coolant level is too low must not be ignored.
226 Display messages
Display messages Coolant Level Low Stop Vehicle Turn Engine Off
Possible causes/consequences and M Solutions The coolant is too hot. X Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
X Make sure that the air supply to the engine radiator is not
blocked, e.g. by snow, slush or ice.
X Wait until the display message disappears before restarting the
engine. Otherwise, there is a risk of engine damage.
X Pay attention to the coolant temperature display. X If the temperature increases again, visit a qualified specialist
workshop immediately.
The poly-V-belt may have torn. X Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
X Open the hood. X Check whether the poly-V-belt is torn. If the poly-V-belt is torn: ! Do not continue driving. The engine could otherwise overheat. X Consult a qualified specialist workshop. If the poly-V-belt is not damaged: X Wait until the display message disappears before restarting the
engine. Otherwise, there is a risk of engine damage.
X Pay attention to the coolant temperature display. X Visit a qualified specialist workshop.
G WARNING Driving when your engine is overheated can cause some fluids which may have leaked into the engine compartment to catch fire. You could be seriously burned. Steam from an overheated engine can cause serious burns which can occur just by opening the engine hood. Stay away from the engine if you see or hear steam coming from it. Stop the vehicle in a safe location away from other traffic. Turn off the engine, get out of the vehicle and do not stand near the vehicle until the engine has cooled down.
! If the coolant temperature exceeds 248 ‡(120 †) do not continue driving. The engine will
otherwise be damaged.
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Display messages ? The engine fan is defective.
Possible causes/consequences and M Solutions
X At coolant temperatures under 248 ‡ (120 † ), drive to the next
qualified specialist workshop.
X Avoid subjecting the engine to heavy loads, e.g. driving in
mountainous terrain, and stop-and-go traffic.
# The battery is not being charged.
Possible causes are: Ra defective alternator Ra torn poly-V-belt Ra malfunction in the electronics X Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
X Open the hood. X Check whether the poly-V-belt is torn. If the poly-V-belt is torn: ! Do not continue driving. The engine could otherwise overheat. X Consult a qualified specialist workshop. If the poly-V-belt is not damaged: X Visit a qualified specialist workshop.
Check Engine Oil At Next Refueling
The engine oil level has dropped to the minimum level. A warning tone also sounds. X Check the engine oil level at the latest when next refueling
(Y page 275).
X If necessary, add engine oil (Y page 275). X If engine oil needs to be added more often than usual, have the
engine checked at a qualified specialist workshop.
Information on approved engine oils can be obtained from any qualified specialist workshop or on the Internet at http://www.mbusa.com (USA only). ! The oil level is too low. Avoid long journeys with too little engine oil. There is a risk of
engine damage. The display messages and the corresponding symbol that indicate that the oil level is too low must not be ignored.
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Display messages Fuel Level Low C There is only a very small amount of fuel in the fuel tank.
Possible causes/consequences and M Solutions The fuel level has dropped into the reserve range. X Refuel at the nearest gas station.
Gas Cap Loose
Driving systems Display messages À Attention Assist: Pause!
À Attention Assist Inoperative HOLD Off
X Refuel at the nearest gas station without fail. The fuel system pressure is too low. The fuel filler cap is not closed correctly or the fuel system is leaking. X Check that the fuel filler cap is correctly closed. If the fuel filler cap is not correctly closed: X Close the fuel filler cap. If the fuel filler cap is correctly closed: X Visit a qualified specialist workshop.
Possible causes/consequences and M Solutions Based on specific criteria, ATTENTION ASSIST has determined that the driver is tired or paying less attention. A warning tone also sounds. X If necessary, take a break. During long journeys, take regular breaks in good time so you get enough rest.
ATTENTION ASSIST has failed. X Visit a qualified specialist workshop.
The HOLD function is deactivated. The vehicle is skidding. A warning tone also sounds. X Reactivate the HOLD function later (Y page 176).
The HOLD function is deactivated. When the brake pedal is firmly depressed, an activation condition is not fulfilled. A warning tone also sounds. X Check the activation conditions for the HOLD function
(Y page 176).
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229
Display messages Radar Sensors Deactivated See Operator's Manual Lane Keeping Assist Currently Unavailable. See Operator's Manual or Lane Keeping Assist Currently Unavailable. See Operator's Manual
Lane Keeping Assist Inoperative or Active Lane Keeping Assist Inoperative
Possible causes/consequences and M Solutions The radar sensor system is deactivated. X Switch on the radar sensor system (Y page 210).
Lane Keeping Assist or Active Lane Keeping Assist is deactivated and temporarily inoperative if: Rthe windshield is dirty in the camera's field of vision. Rvisibility is impaired due to heavy rain, snow or fog. Rthere are no lane markings for a longer period. Rthe lane markings are worn, dark or covered, for example by dirt
or snow.
Lane Keeping Assist or Active Lane Keeping Assist is operational again and the display message disappears if: Rthe dirt (e.g. slush) drops away while the vehicle is in motion. Rthe system recognizes that the camera is fully operational again. If the display message continues to be displayed: X Clean the windshield.
Lane Keeping Assist or Active Lane Keeping Assist is defective. X Visit a qualified specialist workshop.
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