Page 411 of 585

410 OperationVehicle careCleaning the windows and the wiper 
blades
Fold the wiper arms forward until they 
engage.
Clean the wiper blade inserts with a 
clean cloth and detergent solution.
Use a soft, clean cloth and a mild win-
dow cleaning solution on all outside 
and inside glass surfaces.
An automotive glass cleaner is recom-
mended.Light alloy wheels
If possible, clean wheels once a week.
Use Mercedes-Benz approved Wheel 
Care, a soft bristle brush and a strong 
spray of water for cleaning the light al-
loy wheels.
Warning!
G
For safety reasons, switch off wipers and re-
move SmartKey from starter switch 
(vehicles with KEYLESS-GO*: Make sure the 
vehicle’s on-board electronics have 
status
0) before cleaning the windshield 
and/or the wiper blades. Otherwise, the 
wiper motor could suddenly turn on and 
cause injury.
!
Do not pull on the wiper blade inserts. They 
could tear.
!
Fold the windshield wiper arms back onto 
the windshield before turning the SmartKey in 
the starter switch or pressing the KEYLESS-GO 
start/stop button (vehicles with KEYLESS-GO*).
Hold on to the wiper when folding the wiper arm 
back. If released, the force of the impact from 
the tensioning spring could crack the windshield.
!
To clean the window interior, do not use a 
dry cloth, abrasives, solvents or cleaners con-
taining solvents. Do not touch the inside of the 
front, rear or side windows and the power 
tilt/sliding sunroof* or rear panorama roof with 
hard objects such as an ice scraper or ring. 
Doing so may damage the windows.
!
Only use acid-free cleaning materials. Acid 
may cause corrosion or damage the clear coat.
!
The vehicle should not be parked for an ex-
tended period of time immediately after it has 
been cleaned, especially not after the wheel rims 
have been cleaned with wheel rim cleaner. 
Wheel rim cleaners can lead to increased 
corrosion of the brake disks and brake pads. 
Non-approved wheel cleaners may also damage 
the wheel paint if the car is not driven after 
cleaning. Therefore, the vehicle’s brake system 
should always be warmed-up before it is parked 
after cleaning. To do so, please drive your vehicle 
for several minutes to allow the brakes to dry. 
When applying Mercedes-Benz approved Tire 
Care and Mercedes-Benz approved Wheel Care 
products, take care not to spray them on the 
brake disks. 
         
        
        
     
        
        Page 415 of 585

414 Practical hintsWhat to do if …Lamps in instrument clusterGeneral information:
If any of the following lamps in the instru-
ment cluster fails to come on during thebulb self-check when switching on the 
ignition, have the respective bulb checked 
and replaced if necessary.Problem
Possible cause/consequence
Suggested solution
-
The yellow ABS indicator lamp 
comes on while the engine is 
running.
ABS has detected a malfunction and has 
switched off. The BAS, ESP
®, EBP and 4-ETS 
are also switched off (see messages in multi-
function display).
The brake system is still functioning normally 
but without the ABS available.
If the ABS control unit is malfunctioning, 
other systems such as the navigation 
system* or the automatic transmission may 
also be malfunctioning.
Continue driving with added caution. 
Wheels may lock during hard braking, 
reducing steering capability.
Read and observe messages in the 
multifunction display (
page 428).
Have the system checked at an 
authorized Mercedes-Benz Light 
Truck Center as soon as possible.
Failure to follow these instructions 
increases the risk of an accident.
The charging voltage has fallen below 
10 volts. The ABS has switched off.
The battery might not be charged sufficiently.
When the voltage is above this value 
again, the ABS is operational again and 
the ABS indicator lamp should go out.
If the ABS indicator lamp should go out:
Have the generator (alternator) and 
the battery checked. 
         
        
        
     
        
        Page 417 of 585
416 Practical hintsWhat to do if …Problem
Possible cause/conse-
quence
Suggested solution
;
(USA only)
3
(Canada only)
-
v
The red brake warning lamp 
comes on while driving. In ad-
dition, the yellow ABS malfunc-
tion indicator lamp, and the 
yellow ESP
® warning lamp 
come on and a warning will 
sound.
A malfunction in the Electronic 
Brake Proportioning 
(page 101) was detected.
Have the system checked at an autho-
rized Mercedes-Benz Light Truck 
Center as soon as possible.
Failure to follow these instructions 
increases the risk of an accident. 
         
        
        
     
        
        Page 420 of 585

419 Practical hints
What to do if …
Problem
Possible cause/consequence
Suggested solution
v
The yellow  ABS/ESP
® warning 
lamp comes on while driving.
The ESP
® has been switched off.
Risk of accident!
When the ESP
® is switched off it will not sta-
bilize the vehicle if the system recognizes 
that the vehicle starts to skid or that a wheel 
is spinning.
Switch the ESP
® back on (
page 100). 
Exceptions: (
page 99).
If leaving the ESP
® switched off, adapt 
your speed and driving to the prevailing 
road and weather conditions.
If the ESP
® cannot be switched on:
Have the system checked at an autho-
rized Mercedes-Benz Light Truck 
Center as soon as possible.
The ESP
® is not operational due to a malfunc-
tion.
Risk of accident!
Observe additional messages in the 
multifunction display.
Continue driving with added caution.
Adapt your speed and driving to the pre-
vailing road and weather conditions.
Have the system checked at an autho-
rized Mercedes-Benz Light Truck 
Center as soon as possible. 
         
        
        
     
        
        Page 421 of 585
420 Practical hintsWhat to do if …Problem
Possible cause/consequence
Suggested solution
v
The yellow  ABS/ESP
® warning 
lamp flashes while driving.
The ESP
®, ABS, or traction control has come 
into operation because of detected traction 
loss in at least one tire.
The cruise control and the Distronic* system 
are deactivated.
When driving off, apply as little throt-
tle as possible.
While driving, ease up on the acceler-
ator.
Adapt your speed and driving to the 
prevailing road and weather condi-
tions.
Do not deactivate the ESP
®.
Exceptions: (
page 99).
Failure to follow these instructions 
increases the risk of an accident.
The yellow fuel tank reserve 
warning lamp in the fuel gauge 
comes on while driving.
The fuel level has gone below the reserve 
mark.
Refuel at the next gas station 
(page 352). 
         
        
        
     
        
        Page 425 of 585

424 Practical hintsWhat to do if …Problem
Possible cause/consequence
Suggested solution
H
USA only:
Combination low tire pres-
sure/TPMS malfunction telltale 
for the TPMS illuminates contin-
uously.
Canada only:
Low tire pressure telltale for the 
Advanced TPMS* illuminates 
continuously.
The TPMS (USA only) or Advanced TPMS* 
(Canada only) detects a loss of pressure in 
at least one tire.
Carefully bring the vehicle to a halt, 
avoiding abrupt steering and braking 
maneuvers. Observe the traffic situation 
around you.
Read and observe messages in the 
multifunction display.
If the tire inflation pressure in the respec-
tive tire(s) has (have) been corrected, the 
combination low tire pressure/TPMS mal-
function telltale goes out after few minutes 
driving.
H
USA only:
Combination low tire pres-
sure/TPMS malfunction telltale 
for the TPMS flashes 
60 seconds and then stays 
illuminated.
There is a malfunction in the TPMS.
Read and observe messages in the 
multifunction display.
Have the TPMS checked by an 
authorized Mercedes-Benz Light Truck 
Center.
After the malfunction has been remedied 
the combination low tire pressure/TPMS 
malfunction telltale goes out after few 
minutes driving. 
         
        
        
     
        
        Page 426 of 585

425 Practical hints
What to do if …
Warning!
G
Each tire, including the spare (if provided), 
should be checked monthly when cold and 
inflated to the inflation pressure recom-
mended by the vehicle manufacturer on the 
vehicle placard or the tire inflation pressure 
label. (If your vehicle has tires of a different 
size than the size indicated on the vehicle 
placard or the tire inflation pressure label, 
you should determine the proper tire infla-
tion pressure for those tires).
As an added safety feature, your vehicle has 
been equipped with a tire pressure monitor-
ing system (TPMS) that illuminates a low tire 
pressure telltale when one or more of your 
tires is significantly underinflated. Accord-
ingly, when the low tire pressure telltale illu-
minates, you should stop and check your 
tires as soon as possible, and inflate them to 
the proper pressure. Driving on a significant-
ly underinflated tire causes the tire to over-
heat and can lead to tire failure.
Underinflation also reduces fuel efficiency 
and tire tread life, and may affect the vehi-
cle’s handling and stopping ability. Please 
note that the TPMS is not a substitute for 
proper tire maintenance, and it is the driv-
er’s responsibility to maintain correct tire 
pressure, even if underinflation has not 
reached the level to trigger illumination of 
the TPMS low tire pressure telltale.
USA only:
Your vehicle has also been equipped with a 
TPMS malfunction indicator to indicate 
when the system is not operating properly. 
The TPMS malfunction indicator is com-
bined with the low tire pressure telltale. 
When the system detects a malfunction, the 
telltale will flash for approximately 1 minute 
and then remain continuously illuminated. 
This sequence will continue upon subse-
quent vehicle start-ups as long as the mal-
function exists. When the malfunction 
indicator is illuminated, the system may not 
be able to detect or signal low tire pressure 
as intended.
TPMS malfunctions may occur for a variety 
of reasons, including the installation of in-
compatible replacement or alternate tires or 
wheels on the vehicle that prevent the TPMS 
from functioning properly. Always check the 
TPMS malfunction telltale after replacing 
one or more tires or wheels on your vehicle 
to ensure that the replacement or alternate 
tires and wheels allow the TPMS to continue 
to function properly. 
         
        
        
     
        
        Page 431 of 585

430 Practical hintsWhat to do if …Text messagesDisplay message
Possible cause/consequence
Possible solution
ABS
inoperative
See Operator’s Manual
The ABS has detected a malfunction 
and has switched off.
The ESP
® and the BAS are also 
deactivated.
The brake system is still functioning 
normally but without the ABS avail-
able.
Continue driving with added caution. 
Wheels may lock during hard braking, 
reducing steering capability.
Have the system checked at an authorized 
Mercedes-Benz Light Truck Center as soon 
as possible.
Failure to follow these instructions increases 
the risk of accident.
unavailable
See Operator’s Manual
The ABS was deactivated because of 
insufficient power supply. The charg-
ing voltage has fallen below 10 volts.
The brake system is still functioning 
normally but without the ABS 
available.
When the voltage is above this value again, the 
ABS is operational again and the message in 
the multifunction display should disappear.
If the message in the multifunction display 
does not disappear:
Have the generator (alternator) and the 
battery checked.