Page 266 of 376
266 Practical hintsWhat to do if …Display message
Possible cause
Possible solution
ESP
ESP
NOT AVAILABLE!
The ESP was deactivated because of a 
malfunction or interrupted power supply. 
The ABS might not be operational.
Synchronize the ESP. With vehicle sta-
tionary and the engine running, turn 
the steering wheel completely to the 
left and then to the right.
If the ESP message does not go out:
Continue driving with added caution.
Visit an authorized Mercedes-Benz 
Center as soon as possible.
Failure to follow these instructions 
increases the risk of an accident.
The self-diagnosis has not been 
completed.
The display will clear after driving a short 
distance at more than 12 mph (20 km/h).
!When synchronizing the ESP, make 
sure you can turn the steering wheel in 
both directions as far as it will go 
without the wheels hitting any objects, 
e.g. a road curb. 
     
        
        Page 268 of 376
268 Practical hintsWhat to do if …Symbol messagesDisplay symbol
Display message
Possible cause
Possible solution
-
ABS SYSTEM
VISIT WORKSHOP!
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 available.
Continue driving with added caution. 
Wheels may lock during hard braking, 
reducing steering capability.
Have the system checked at an 
authorized Mercedes-Benz Center as 
soon as possible.
Failure to follow these instructions 
increases the risk of an accident.
DISPLAY MALFUNCTION
VISIT WORKSHOP!
The ABS or the ABS display is 
malfunctioning.
Continue driving with added caution. 
Wheels may lock during hard braking, 
reducing steering capability.
Have the system checked at an 
authorized Mercedes-Benz Center as 
soon as possible.
Failure to follow these instructions 
increases the risk of an accident. 
     
        
        Page 282 of 376

282 Practical hintsWhat to do if …Display symbol
Display message
Possible cause
Possible solution
1
RESTRAINT SYSTEM
DRIVE TO WORKSHOP!
The system is malfunctioning.
Drive with added caution to the 
nearest authorized Mercedes-Benz 
Center.
_
STEERING WHEEL ADJ.
LOCK!
The steering column is not properly 
locked.
Lock steering column (
page 38).
STEERING OIL
VISIT WORKSHOP!
The steering gear oil level is too low. 
There is a danger of steering gear 
damage.
Have the system checked by an 
authorized Mercedes-Benz Center.
Warning!
G
In the event a malfunction of the SRS is indi-
cated as outlined above, the SRS may not be 
operational. For your safety, we strongly 
recommend that you visit 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.
Warning!
G
If the level of steering gear oil in reservoir is 
too low, the steering power assistance could 
fail. Much greater effort will then be needed 
to turn the steering wheel.
Do not add steering oil without checking the 
steering system.
Do not drive the vehicle. Have the system 
checked at your authorized Mercedes-Benz 
Center as soon as possible. 
     
        
        Page 283 of 376
283 Practical hints
What to do if …
Display symbol
Display message
Possible cause
Possible solution
L
TELE AID
DRIVE TO WORKSHOP! 
One or more main functions of the Tele 
Aid system* are malfunctioning.
Have the Tele Aid system* checked by 
an authorized Mercedes-Benz Center.
ì
FUNCTION
NOT AVAILABLE!
This display appears if buttonì 
orí on the multifunction steering 
wheel is pressed and the vehicle is not 
equipped with a telephone*.
Ê
TRUNK OPEN!
This message will appear whenever the 
trunk lid is open.
Close the trunk lid. 
W
WASHER FLUID
CHECK LEVEL!
The fluid level has dropped to 
about
1/3of total reservoir capacity.
Add washer fluid (
page 243). 
     
        
        Page 301 of 376

301 Practical hints
Flat tire
Flat tire
Preparing the vehicle
Park the vehicle as far as possible from 
moving traffic on a hard surface.
Turn on the hazard warning flashers.
Engage the steering wheel lock in the 
straight ahead position and set the 
parking brake.
Move the gear selector lever toP (man-
ual transmission to 1st or reverse 
gear).
Have any passenger exit the vehicle at 
a safe distance from the roadway.
Mounting the spare wheel Preparing the vehicle
Prepare the vehicle as described under 
“Preparing the vehicle” on this page.
Take the wheel wrench and the jack 
out of wheel well below the trunk floor 
(page 285).
Take the spare wheel out of the trunk 
(page 285).
Lifting the vehicle
Prevent the vehicle from rolling away 
by blocking wheels with wheel chocks 
(not included) or other sizable objects.
When changing wheel on a level surface:
Place one chock in front of and one be-
hind the wheel that is diagonally oppo-
site to the wheel being changed.
Warning!
G
The dimensions of the spare wheel are dif-
ferent from those of the road wheels. As a 
result, the vehicle handling characteristics 
change when driving with a spare wheel 
mounted. Adapt your driving style accord-
ingly.
The spare wheel is for temporary use only. 
When driving with spare wheel mounted, en-
sure proper tire pressure and do not exceed 
vehicle speed of 50 mph (80 km/h).
Drive to the nearest Mercedes-Benz Center 
as soon as possible to have the spare wheel 
replaced with a regular road wheel.
Never operate the vehicle with more than 
one spare wheel mounted. 
     
        
        Page 314 of 376

314 Practical hintsTowing the vehicle
!
To be certain to avoid a possibility of 
damage to the transmission, however, 
we recommend the drive shaft be dis-
connected at the rear axle drive flange 
for any towing beyond a short tow to a 
nearby garage.
Warning!
G
If circumstances require towing the vehicle 
with all wheels on the ground, always tow 
with a tow bar if:
the engine will not run
there is a malfunction in the power sup-
ply or in the vehicle’s electrical system
as that will be necessary to adequately con-
trol the towed vehicle.
Prior to towing the vehicle with all wheels on 
the ground, make certain that the SmartKey 
is in starter switch position2.
If the SmartKey is left in starter switch 
position0 for an extended period of time, it 
can no longer be turned in the switch. In this 
case, the steering is locked. To unlock, re-
move SmartKey from starter switch and re-
insert.
iTo signal turns while being towed with 
the hazard warning flasher in use, turn 
SmartKey in starter switch to 
position2 and activate the combina-
tion switch for the left or right turn sig-
nal in the usual manner – only the 
selected turn signal will operate.
Upon canceling the turn signal, the 
hazard warning flasher will operate 
again. 
     
        
        Page 315 of 376

315 Practical hints
Towing the vehicle
Warning!
G
With the engine not running, there is no 
power assistance for the brake and steering 
systems. In this case, it is important to keep 
in mind that a considerably higher degree of 
effort is necessary to brake and steer the ve-
hicle. Adapt your driving accordingly.
!When towing the vehicle with all wheels 
on the ground, please note the follow-
ing:
With the automatic central locking acti-
vated and the SmartKey in starter 
switch position2, the vehicle doors 
lock if the left front wheel as well as the 
right rear wheel are turning at vehicle 
speeds of approx. 9 mph (15 km/h) or 
more.
Switch off the tow-away alarm 
(page 79).
To prevent the vehicle doors from lock-
ing, deactivate the automatic central 
locking (
page 129).
Towing of the vehicle should only be 
done using the properly installed tow-
ing eye bolt. Never attach tow cable, 
tow rope or tow rod to vehicle chassis, 
frame or suspension parts.
iIf the battery is disconnected or dis-
charged
the SmartKey will not turn in the 
starter switch. See notes on the 
battery (
page 307) or on jump 
starting (page 310).
the gear selector lever will remain 
locked in positionP. See notes on 
manual unlocking of gear selector 
lever (
page 291). 
     
        
        Page 330 of 376
330 Technical dataFuels, coolants, lubricants, etc.
Fuels, coolants, lubricants, etc.CapacitiesVehicle components and their respective 
lubricants must match. Therefore use only 
brands tested and approved by Mercedes-Benz. Please refer to the Facto-
ry Approved Service Products pamphlet, or 
inquire at your Mercedes-Benz Center.
Model
Capacity
Fuels, coolants, lubricants, etc.
Engine with oil filter
C230Kompressor
C320
5.8 US qt (5.5 l)
7.9 US qt (7.5 l)
approved engine oils
Automatic transmission
8.5 US qt (8.0 l)
MB Automatic Transmission Oil
Manual transmission
1.3 US qt (1.2 l)
MB Manual Transmission Oil
Rear axle
1.2 US qt (1.1 l)
Hypoid gear oil SAE 85 W 90
Power steering
approx. 1.1 US qt (1.0 l)
MB Power Steering Fluid (Pentosin CHF 11S)
Front wheel hubs
approx. 2.1 oz (60 g) each
High temperature roller bearing grease
Cooling system
C230Kompressor
C320
approx. 5.9 US qt (5.6 l)
approx. 6.8 US qt (6.4 l)
MB 325.0 Anticorrosion/Antifreeze Agent