2013 MERCEDES-BENZ R-CLASS FAMILY TOURER Owners Manual

Display messages Possible causes/consequences and
M Solutions
b
Turn Signal Rear
Left orTurn Signal
Rear Right The rear left-hand or rear right-hand tur
nsignal is defective.
X Check whether you are permitted to replace the bulb yourself
(Y page 126).
or
X Visit a qualified specialist workshop. b
Turn Signal Front
Left orTurn Signal
Front Right The front left-hand or front right-hand turn signal is defective.
X
Check whether you are permitted to replace the bulb yourself
(Y page 126).
or
X Visit a qualified specialist workshop. b
Turn Signal Left
Mirror orTurn
Signal Right Mirror The turn signal in the left-hand or right-hand exterior mirror is
defective.
X
Check whether you are permitted to replace the bulb yourself
(Y page 126).
or
X Visit a qualified specialist workshop. b
3rd Brake Lamp The high-mounted brake lamp is faulty.
X
Check whether you are permitted to replace the bulb yourself
(Y page 126).
or
X Visit a qualified specialist workshop. b
Brake Lamp
Left orBrake Lamp
Right The left or right-hand brake lamp is defective.
X
Check whether you are permitted to replace the bulb yourself
(Y page 126).
or
X Visit a qualified specialist workshop. b
High Beam
Left orHigh Beam
Right The left or right-hand high beam is defective.
X
Check whether you are permitted to change the bulb yourself
(Y page 126).
or
X Visit a qualified specialist workshop. 222
Display messagesOn-board computer and displays

Display messages Possible causes/consequences and
M Solutions
b
License
Plate Lamp
Left orLicense
Plate Lamp Right The lef
torright-hand license plate lamp is defective.
X Check whether you are permitted to replace the bulb yourself
(Y page 126).
or
X Visit a qualified specialist workshop. b
Front Foglamp
Left orFront
Foglamp Right The left-hand or right-hand front fog lamp is defective.
X
Check whether you are permitted to change the bulb yourself
(Y page 126).
or
X Visit a qualified specialist workshop. b
Foglamp Rear
Left orFoglamp Rear
Right The left-hand or right-hand rear fog lamp is defective.
X
Check whether you are permitted to replace the bulb yourself
(Y page 126).
or
X Visit a qualified specialist workshop. b
Parking
Lamp Front
Left orParking Lamp
Front Right The front left or front right parking or standing lamp is defective.
X
Check whether you are permitted to replace the bulb yourself
(Y page 126).
or
X Visit a qualified specialist workshop. b
Reverse Lamp
Left orReverse lamp
Right The left or right-hand backup lamp is defective.
X
Check whether you are permitted to replace the bulb yourself
(Y page 126).
or
X Visit a qualified specialist workshop. b
Marker Lamp Front
Left orMarker Lamp
Front Right The left or right front side marker lamp is defective.
X
Check whether you are permitted to replace the bulb yourself
(Y page 126).
or
X Visit a qualified specialist workshop. b
Tail Lamp
Left orTail Lamp
Right The left or right-hand tail lamp is defective.
X
Check whether you are permitted to replace the bulb yourself
(Y page 126).
or
X Visit a qualified specialist workshop. Display messages
223On-board computer and displays Z

Display messages Possible causes/consequences and
M Solutions
b
Daytime Running
Light
Left orDaytime
Running Light Right The left-hand or right-hand daytime running lamp is faulty.
X
Chec kwhether you are permitted to replace the bulb yourself
(Y page 126).
or
X Visit a qualified specialist workshop. b
AUTO Light
Inoperative The light sensor is defective.
X
Visit a qualified specialist workshop.
USA only:
X Switch off the daytime running lamps in the on-board computer
(Y page 207).
X Switch the lights on and off using the light switch. b
Switch Off Lights The lights are still switched on when you leave the vehicle. A
warning tone also sounds.
X
Turn the light switch to $orÃ.
or
X If the rear fog lamp is switched on: press the light switch in to
the stop. Engine
Display messages Possible causes/consequences and
M Solutions
+
Top
Up Coolant See
Operator's Manual The coolant level is too low.
!
Avoid making long journeys with too little coolant in the engine
cooling system. The engine will otherwise be damaged.
X Add coolant, observing the warning notes before doing so
(Y page 287).
X If coolant needs to be added more often than usual, have the
engine coolant system checked at a qualified specialist
workshop. ? The fan motor is faulty.
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. 224
Display messagesOn-board computer and displays

Display messages Possible causes/consequences and
M Solutions
?
Coolant Stop car,
switch engine off The coolan
tis too hot.
Aw arning tone also sounds.
G WARNING
Do no tdrive when youre ngine is overheated. Thi scan cause some
fluids which may have leaked into the engine compartmen tto
catch fire.
Stea mfrom the overheated engine can also cause serious burns
which can occur just by opening the hood.
There is a risk of injury.
X Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 166).
X Leave the vehicle and keep a safe distance from the vehicle until
the engine has cooled down.
X Make sure that the air supply to the engine radiator is not
blocked, e.g. by snow, slush or ice.
X Do not start the engine again until the display message goes out
and the coolant temperature is under 248 ‡ (120 †).
Otherwise, the engine could be damaged.
X Pay attention to the coolant temperature display.
X If the temperature increases again, visit a qualified specialist
workshop immediately.
Under normal operating conditions and with the specified coolant
level, the coolant temperature may rise to 248 ‡ (120 †). Display messages
225On-board computer and displays Z

Display messages Possible causes/consequences and
M Solutions
# The battery is no
tbeing charged.
Aw arning tone also sounds.
Possible causes are:
R a defective alternator
R a torn poly-V-belt
R a malfunction in the electronics
X Pull ove rand stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
X Ope nthe 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. #
Battery /
Alternator Stop
Vehicle The battery is defective.
You will need to use considerably more force to brake. The brake
pedal travel and braking distance will increase. If necessary,
depress the brake pedal with maximum force.
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 Apply the parking brake.
X Consult a qualified specialist workshop. 4
Check engine oil
level at next
refueling The engine oil level has dropped to the minimum level.
Aw
arning tone also sounds.
X Chec kthe oil level when next refueling, at the latest
(Y page 286).
X If necessary, add engine oil (Y page 286).
X Have the engine checked at a qualified specialist workshop if
engine oil needs to be added more often than usual.
! Avoid long journeys with too little engine oil. The engine will
otherwise be damaged.
Information on approved engine oils can be obtained from any
qualified specialist workshop or on the Internet at http://
www.mbusa.com (USA only). 226
Display messagesOn-board computer and displays

Display messages Possible causes/consequences and
M Solutions
8
Reserve Fuel The fuel level has dropped into the reserve range.
X
Refuel at the neares tgas station. C There is only a very small amoun
toffuel in th efuel tank.
X Refuel at the neares tgas statio nwithout fail. 8
Gas Cap Open 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. 8
Ultra Low-sulfur
Diesel Fuel Only Vehicles with a diesel engine: the fuel level has fallen below the
reserve range.
X
Refuel at the nearest gas station.
X Only use commercially available vehicular ULTRA-LOW SULFUR
HIGHWAY DIESEL FUEL (ULSD, 15ppm SULFUR MAXIMUM). ¸
Replace air filter Vehicles with a diesel engine: the engine air filter is dirty and must
be replaced.
X
Visit a qualified specialist workshop. ·
Clean Fuel Filter Vehicles with a diesel engine: there is water in the fuel filter. The
water must be drained off.
X
Visit a qualified specialist workshop. Ø
Check
Additive See
Operator's Manual The DEF tank is almost empty.
X
Have the DE Ftank refilled as soon as possible at a qualified
specialist workshop (Y page 164).Ø
Remaining Starts:
16 The DE
Flevel has fallen to a minimum. You can start the engine a
further 16 times.
X Have the DEFt ank refilled as soon as possible at a qualified
specialist workshop (Y page 164).
i You can start the engine a further 16 times. If DE Fis not added,
it will then not be possible to restart the engine. add DEF tank
with approximately 1gal (3. 8l) DEF( Ypage 164). Display messages
227On-board computer and displays Z

Driving systems
Display messages Possible causes/consequences and
M Solutions
°
Vehicle Rising
Wait Briefly The vehicle level is too low when the vehicle is stationary.
X
Do no tpull away.
The vehicle level is set when the display message disappears. °
STOP Car Too Low You have pulled away while the vehicle level is still too low or
AIRMATIC is defective.
The rear axle level control or AIRMATIC sets the vehicle to the
selected level after a short period. While the display message is
displayed:
AIRMATIC sets the vehicle to the selected level after a short
period. While the display message is displayed:
X
Make only slight steering movements. Otherwise, the front
fender or the tires could be damaged if the steering movement
is too large.
X Liste nfor scraping sounds.
X Do not drive faster than 50 mph (80km/h).
If the display message continues to be displayed:
X Have the vehicle checked at a qualified specialist workshop. °
Level Selection
Not Permitted You cannot change the vehicle level because you are exceeding
the permissible speed for the selected vehicle level.
X
Drive more slowly and then select the desired vehicle level again
(Y page 183). °
Compressor
Cooling
Down You have selected a higher vehicle level. The compressor first
needs to cool down because of frequent level changes.
X
Drive in a manner appropriate for the current vehicle level.
X Make sure that there is sufficient ground clearance.
X Allow the compressor to cool down.
When the compressor has cooled down, the display message
disappears. The vehicle then continues rising to the selected
level. °
Malfunction AIRMATIC is malfunctioning.
X
No faster than 50 mph (80 km/h).
X Make sure that there is sufficient ground clearance.
X Have the vehicle checked at a qualified specialist workshop. 228
Display messagesOn-board computer and displays

Display messages Possible causes/consequences and
M Solutions
Blind Spot Assist
Currently
Unavailable See
Operator's Manual Blind Spot Assis
tis temporarily inoperative.
you have established the electrical connection between the trailer
and your vehicle.
X Press ato confirm the display message.
Blind Spot Assist is deactivated while towing a trailer. Blind Spot Assist is temporarily inoperative. Possible causes are:
R
the sensors are dirty.
R function is impaired due to heavy rain or snow.
R the radar sensor system is outside the operating temperature
range.
R the 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.
The yellow 9indicator lamps also light up in the exterior
mirrors.
When the causes stated above no longer apply, the display
message disappears.
Blind Spot Assist is operational again.
If you are driving without a trailer and the displaym essage does
not disappear:
If the display message does not disappear:
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 166).
X Clean the sensors (Y page 293).
X Restart the engine. Blind Spot Assist
Inoperative Blind Spot Assist is defective.
The yellow
9indicator lamps also light up in the exterior
mirrors.
X Visit a qualified specialist workshop. Cruise Control
Inoperative Cruise control is defective.
Aw
arning tone also sounds.
X Visi taqualified specialist workshop. Display messages
229On-board computer and displays Z