Page 308 of 435

307 Practical hints
What to do if …?
Problem
Possible cause
Suggested solution
l
The red Distronic warning lamp
comes on while driving.
You are too close to the vehicle in front of
you to maintain selected speed.
Apply the brakes immediately to in-
crease the following distance.
l
The red Distronic warning lamp
comes on while driving and you
hear a warning sound.
You are gaining too rapidly on the vehi-
cle ahead of you.
The distance warning system has recog-
nized a stationary obstacle on your
probable line of travel.
Apply the brakes immediately.
Carefully observe the traffic situation.
You may need to brake or maneuver to
avoid hitting an obstacle.
v
The yellow ESP warning lamp
flashes while driving.
The ESP or traction control has come into
operation because of detected traction loss
in at least one tire.
Distronic* is deactivated.
When driving off, apply as little throttle
as possible.
While driving, ease up on the accelera-
tor.
Adapt your speed and driving to the pre-
vailing road and weather conditions.
Do not deactivate the ESP.
Exceptions: (
page 80).
Failure to follow these instructions increas-
es the risk of an accident.
Page 309 of 435
308 Practical hintsWhat to do if …?Problem
Possible cause
Suggested solution
v
The yellow ESP warning lamp
comes on while driving.
The ESP is deactivated.
Risk of accident!
Adapt your speed and driving to the prevail-
ing road, weather, and traffic conditions.
Switch the ESP back on (
page 81).
If the ESP cannot be switched back on, have
the system checked at an authorized
Mercedes-Benz Center as soon as possible.
The yellow fuel tank reserve
warning lamp comes on while
driving.
The fuel level has gone below the reserve
mark.
Refuel at the next gas station
(page 269).
<
The red seat belt telltale illumi-
nates for a brief period after
starting the engine.
The warning lamp reminds you to fasten
seat belts.
Fasten your seat belt.
The warning lamp goes out.
Page 315 of 435

314 Practical hintsWhat to do if …?Display
Display message
Possible cause
Possible solution
ABC
ACTIVE BODY CONTROL
VISIT WORKSHOP!
The capability of the ABC system is restrict-
ed.
Do not exceed a speed of 50 mph (80 km/h).
Visit an authorized Mercedes-Benz center as
soon as possible.
ABS
MALFUNCTION!
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 nor-
mally but without the ABS available.
Continue driving with added caution. Wheels
may lock during hard braking, reducing steer-
ing 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 malfunction-
ing.
Continue driving with added caution. Wheels
may lock during hard braking, reducing steer-
ing 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.
AIR FILTER
CHANGE CARTRIDGE
VISIT WORKSHOP!
The air filter is clogged.
Have the air filter checked by an authorized
Mercedes-Benz Center.
Page 316 of 435

315 Practical hints
What to do if …?
Display
Display message
Possible cause
Possible solution
CRUISE CON-
TROL
CRUISE CONTROL
VISIT WORKSHOP!
Cruise control or Distronic* is malfunction-
ing.
Have cruise control or Distronic* checked by
an authorized Mercedes-Benz Center.
DISTRONIC
EXTERNAL INTERFER-
ENCE
REACTIVATE!
Distronic* is switched off and is temporarily
unavailable.
Try activating Distronic* again later.
CURRENTLY UNAVAIL-
ABLE
SEE OPER. MANUAL
Distronic* is switched off because the Dis-
tronic* cover in the radiator grille is dirty.
Clean the Distronic* cover in the radiator
grille (
page 299).
Restart the vehicle.
DRIVE TO WORKSHOP!
Distronic* is malfunctioning or the display
is malfunctioning.
Visit an authorized Mercedes-Benz Center as
soon as possible.
ESP
MALFUNCTION!
VISIT WORKSHOP!
The ESP has detected a malfunction and
switched off.
The ABS may still be operational.
Continue driving with added caution.
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 ESP or the ESP display is malfunction-
ing.
Continue driving with added caution.
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 317 of 435
316 Practical hintsWhat to do if …?Display
Display message
Possible cause
Possible solution
ESP
NOT AVAILABLE!
SEE OPER. MANUAL
The ESP was deactivated the power supply
has been interrupted.
The ABS is still operational.
Synchronize the ESP. With the vehicle sta-
tionary and the engine running, turn the
steering wheel completely to the left and
then to the right to synchronize the ESP.
If the ESP message does not go out:
Continue driving with added caution.
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.
!When synchronizing the ESP, make
sure you can turn the steering wheel in
both directions as far as it will go with-
out the wheel hitting any objects, e.g.
aroad curb.
Page 318 of 435
317 Practical hints
What to do if …?
Display
Display message
Possible cause
Possible solution
P
SHIFT
TO P
You have tried to turn off the engine with
the KEYLESS-GO* start/stop button with
the gear selector lever not inP.
Place the gear selector lever in positionP.
PRE-SAFE
INACTIVE
SEE OPER. MANUAL
!
If BAS or ESP malfunction messages are
displayed simultaneously, PRE-SAFE has
been deactivated as a result of these mal-
functions. All other occupant safety sys-
tems, such as the airbags, are still available.
Visit an authorized Mercedes-Benz Center as
soon as possible.
PRE-SAFE itself has failed. All other occu-
pant safety systems, such as the airbags,
are still available.
Visit an authorized Mercedes-Benz Center as
soon as possible.
Page 321 of 435
320 Practical hintsWhat to do if …?Display symbol
Display message
Possible cause
Possible solution
#
BATTERY/ALTERNATOR
VISIT WORKSHOP!
The battery was charged with a battery
charger or jump started.
Have the battery checked at a service
station.
The battery is no longer charging.
Possible causes:
alternator malfunctioning
broken poly-V-belt
Stop immediately and check the
poly-V-belt.
If it is broken:
Do not continue to drive. Otherwise the
engine will overheat due to an inoperative
water pump which may result in damage
to the engine. Notify an authorized
Mercedes-Benz Center.
If it is intact:
Drive immediately to the nearest autho-
rized Mercedes-Benz Center. Adjust driv-
ing to be consistent with reduced braking
responsiveness.
Page 369 of 435
368 Practical hintsBatteryReconnecting the battery
Turn off all electrical consumers.
Connect the positive lead and fasten its
cover2.
Connect negative lead3.Batteries contain materials that can harm
the environment if disposed of improperly.
Large 12-volt storage batteries contain
lead. Recycling of batteries is the preferred
method of disposal. Many states require
sellers of batteries to accept old batteries
for recycling.!Never invert the terminal connections.!The battery, its filler caps and the vent
tube must always be securely installed
when the vehicle is in operation.
iThe following procedures must be car-
ried out following any interruption of
battery power (e.g. due to reconnect-
ing):
Set the clock (see COMAND opera-
tor’s manual).
Resynchronize the ESP
(page 316).
Resynchronize side windows
(page 198).
Resynchronize sliding/pop-up roof
(page 202).
Resynchronize rear seats if they
were adjusted five seconds or less
before the battery was disconnect-
ed .