2007 MERCEDES-BENZ C350 brake

323 Practical hints
What to do if …
ProblemPossible cause/consequenceSuggested solution
-The yellow ABS indicator lamp
comes on while the engine is
running.The ABS is temporarily not available. The
ESP® and the BAS are also unavailable.
The system’s self-diagnosis may not be
completed yet.
The brake system is still functioning normally
but without the systems specified above.
Drive a short distance with added
caution at a vehicle speed of above
12 mph (20 km/h).
When the ABS indicator lamp goes
out, the ABS, the ESP
®, and the BAS
are available again.
If the ABS indicator lamp does not go out:
Continue driving with added caution.
Have the system checked at an autho-
rized Mercedes-Benz Center as soon
as possible.
Failure to follow these instructions in-
creases the risk of an accident.

324 Practical hints
What to do if …
ProblemPossible cause/consequenceSuggested solution
;(USA only)
3(Canada only)
The red brake warning lamp
comes on while driving and you
hear a warning sound.
You are driving with the parking brake set.Release the parking brake (page 48).
;(USA only)
3(Canada only)
The red brake warning lamp
comes on while driving.
There is insufficient brake fluid in the reser-
voir.Risk of accident! Carefully stop the vehi-
cle and notify an authorized
Mercedes-Benz Center. Do not add
brake fluid! This will not solve the prob-
lem.
Warning!G
Driving with the brake warning lamp illumi-
nated can result in an accident. Have your
brake system checked immediately if the
brake warning lamp stays on. Don’t 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 could be seriously burned.
!If you find that the brake fluid in the brake
fluid reservoir has fallen to the minimum mark or
below, have the brake system checked for brake
pad thickness and leaks.

325 Practical hints
What to do if …
ProblemPossible cause/consequenceSuggested solution
ú(USA only)
±(Canada only)
The yellow engine malfunction
indicator lamp comes on while
driving.
There is a malfunction in:

The fuel management system

The ignition system

The emission control system

Systems which affect emissions
Such malfunctions may result in excessive
emissions values and may switch the en-
gine to its limp-home (emergency
operation) mode.
Have the vehicle checked as soon as pos-
sible by an authorized Mercedes-Benz
Center.
An on-board diagnostic connector is used
by the service station to link the vehicle to
the shop diagnostics system. It allows the
accurate identification of system malfunc-
tions through the readout of diagnostic
trouble codes. It is located in the front left
area of the footwell next to the parking
brake pedal.
iSome states may by law require you to visit
a workshop immediately as soon as the engine
malfunction indicator lamp comes on. Check lo-
cal requirements.

335 Practical hints
What to do if …
Text messages
Display messagePossible cause/consequencePossible solution
ABSABS, ESP
inoperative
See
Operator’s
ManualThe ABS and ESP® are not available due to
a malfunction.
The BAS is also deactivated.
The brake system is still functioning
normally but without but without the
systems specified above.Continue driving with added caution.
Wheels will lock during hard braking,
reducing steering capability.
Have the system checked at an autho-
rized Mercedes-Benz Center as soon
as possible.
Failure to follow these instructions in-
creases the risk of an accident.
Cruise cont.
and SPEED-
TRONICinoperativeCruise control is malfunctioning.Have the cruise control checked by an au-
thorized Mercedes-Benz Center.
ESPinoperative
See
Operator’s
ManualThe ESP® has switched off due to a
malfunction.
The ABS and the BAS might not be opera-
tional.
The brake system is still functioning
normally but without the systems speci-
fied above.Continue driving with added caution.
Contact an authorized Mercedes-Benz
Center as soon as possible.
Failure to follow these instructions
increases the risk of an accident.

336 Practical hints
What to do if …
Display messagePossible cause/consequencePossible solution
ESPunavailable
See
Operator’s
ManualThe ESP is temporarily not available.
The system’s self-diagnosis may not be
completed yet.
The ABS and the BAS might not be
operational.
The brake system is still functioning normally
but without the systems specified above.Drive a short distance with added
caution at a vehicle speed of above
12 mph (20 km/h).
When the message disappears, the
ESP
® is available again.
If the message does not disappear:
Continue driving with added caution.
Have the system checked at an autho-
rized Mercedes-Benz Center as soon as
possible.
Failure to follow these instructions increas-
es the risk of an accident.
The charging voltage has fallen below 10 volts.
The ESP® has switched off.
The BAS may be switched off, too. The battery
may not be charged. The battery or the gener-
ator may be malfunctioning.
The ABS might not be operational.
The brake system is still functioning normally
but without the systems specified above.
Continue driving with added caution.
When the voltage is above this value
again, the ESP
® is operational again.
Have the system checked at an autho-
rized Mercedes-Benz Center as soon as
possible.

341 Practical hints
What to do if …
Display messagePossible cause/consequencePossible solution
Run Flat Indicator
inoperative

The Run Flat Indicator* is malfunc-
tioning or has been switched off due
to an error.Have the Run Flat Indicator* checked by an
authorized Mercedes-Benz Center.
Check tires
Then restart
Run Flat Indicator

There was a warning message about
a loss in tire inflation pressure and
the Run Flat Indicator* has not been
reactivated yet.Make sure that the correct tire inflation pressure
is set for each tire.
Then reactivate the Run Flat Indicator*.
Tire pressure
Check tires

The Run Flat Indicator* indicates
that the pressure is too low in one or
more tires.Carefully bring the vehicle to a halt, avoiding
abrupt steering and braking maneuvers. Observe
the traffic situation around you.
Check and adjust the tire inflation pressure as
required (
page 290).
If necessary, change the wheel (page 377).
Reactivate the Run Flat Indicator* after adjusting
the tire inflation pressure values (
page 293).
Warning!G
Do not drive with a flat tire. A flat tire affects
the ability to steer or brake the vehicle.
You may lose control of the vehicle. Contin-
ued driving with a flat tire will cause exces-
sive heat build-up and possibly a fire.

344 Practical hints
What to do if …
Display symbolDisplay messagePossible cause/consequencePossible solution
;(USA only)
!(Canada only)
Release
parking brakeYou are driving with the parking brake
set.Release the parking brake
(
page 48).
2Brake
wearThe brake pads have reached their wear
limit.Have the brake pads replaced as soon
as possible.
;(USA only)
3(Canada only)
Check brake
fluid levelThere is insufficient brake fluid in the
reservoir.Risk of accident! Stop the vehicle and
notify an authorized Mercedes-Benz
Center. Do not add brake fluid! This
will not solve the problem.
Warning!G
Driving with the message Check brake
fluid level
displayed can result in an ac-
cident. Have your brake system checked im-
mediately. 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 could be seri-
ously burned.
!If you find that the brake fluid in the brake
fluid reservoir has fallen to the minimum mark or
below, have the brake system checked for brake
pad thickness and leaks.!Brake pad thickness must be visually in-
spected by a qualified technician at the intervals
specified in the Maintenance Booklet.

346 Practical hints
What to do if …
Display symbolDisplay messagePossible cause/consequencePossible solution
•Coolant
Stop, turn
engine offThe coolant is too hot.
Among other possible causes, the
poly-V-belt could be broken.Stop the vehicle in a safe location or
as soon as it is safe to do so.
Apply the parking brake (page 54).
Turn off the engine.
Check the poly-V-belt.
If it is broken:
Do not continue to drive. Otherwise
the engine will overheat due to an in-
operative water pump which may re-
sult in damage to the engine. Contact
an authorized Mercedes-Benz Center.
If it is intact:
Wait for the message to disappear be-
fore restarting the engine.
Doing otherwise could result in seri-
ous engine damage that is not covered
by the Mercedes-Benz Limited War-
ranty.
(Continued on next page)