Page 293 of 416
293 Practical hints
What to do if …?
Problem
Possible cause
Suggested solution
;
(USA only)
3
(Canada only)The red brake warning lamp
lights up while driving and you
hear a warning sound.
You are driving with the parking brake set.
Release the parking brake
(page 44).
The red brake warning lamp
lights up while driving.
There is insufficient brake fluid in the reser-
voir.
Risk of accident! Carefully 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 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 re-
sult in spilling brake fluid on hot engine
parts and the brake fluid catching fire. You
can 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.
Page 294 of 416
294 Practical hintsWhat to do if …?Problem
Possible cause
Suggested solution
?
The yellow “CHECK 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 engine
to its limp-home (emergency operation)
mode.
Have the vehicle checked as soon as
possible 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 sys-
tem. It allows the accurate identifica-
tion of system malfunctions through
the readout of diagnostic trouble
codes. It is located in the front left
area of the footwell next to the park-
ing brake pedal.
The fuel cap is not closed tightly.
Close the fuel cap.
Your gas tank is empty.
After refuelling, start the engine three
or four times in succession.
The limp-home mode is canceled. You do
not need to have your vehicle checked.
The yellow fuel tank reserve
warning lamp lights up while
driving.
The fuel level has gone below the reserve
mark.
Refuel at the next gas station
(page 261).
<
The red seat belt warning lamp
blinks for a brief period after
starting the engine.
The warning lamp reminds you to fasten seat
belts.
Fasten your seat belt.
Page 295 of 416
295 Practical hints
What to do if …?
Lamp in center consoleProblem
Possible cause
Suggested solution
The PASSENGER AIRBAG OFF indicator
lamp lights up.
A BabySmart
TM child seat is installed on the
front passenger seat. Therefore the front
passenger airbag is switched off.
The system is malfunctioning when there is
no BabySmart
TM child seat installed on the
front passenger seat.
Have the system checked as soon as
possible by an authorized
Mercedes-Benz Center.
The PASSENGER AIRBAG OFF indicator
lamp does not light up with a BabySmart
TM
child seat properly installed on the front
passenger seat.The system is malfunctioning.
Make sure that there is nothing be-
tween seat cushion and child seat and
check installation of the child seat.
If the light remains out, have the sys-
tem checked as soon as possible by
an authorized Mercedes-Benz Center.
Do not use the BabySmart
TM restraint
to transport children on the front pas-
senger seat until the system has been
repaired.
Page 311 of 416
311 Practical hints
What to do if …?
PRE-SAFE
INACTIVE
VISIT WORKSHOP
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.
A
RESERVE FUEL
The fuel level has dropped below the re-
serve mark.
Refuel at the next gas station
(page 261).
Y
HOOD OPEN!
You are driving with the hood open.
Close the hood (
page 264).
I
REMOVE KEY!
You have forgotten to remove the
SmartKey.
Remove the SmartKey from the igni-
tion.
REPLACE KEY!
VISIT WORKSHOP!
The batteries in the SmartKey are dead.
Change the batteries (
page 328).
AUTOM. LIGHT ON
REMOVE KEY!
Remove the SmartKey from the start-
er switch.
Display
Possible cause
Suggested solution
Page 312 of 416
312 Practical hintsWhat to do if …?Display
Possible cause
Suggested solution
.
LIGHT SENSOR
VISIT WORKSHOP!
The lamp sensor is malfunctioning. The
headlamps switch on automatically.
In the control system, set lamp operation
to manual (
page 149).
Switch on headlamps using the exterior
lamp switch.
BRAKE LIGHT
VISIT WORKSHOP!
Brake lamp illumination is delayed or lamp
is permanently on.
Visit an authorized Mercedes-Benz Cen-
ter as soon as possible.
DISPLAY MALFUNCTION
VISIT WORKSHOP!
The display for the lamps or the system is
malfunctioning.
Visit an authorized Mercedes-Benz Cen-
ter as soon as possible.
TURN OFF LIGHTS!
Lamps have been turned on although the
SmartKey in the ignition is in position 0.
Turn off the headlamps
TURN SIG. MIRROR, L
CHECK LIGHT!
The left turn signal in the side mirror is
malfunctioning. This message will only ap-
pear if all light emitting diodes have
stopped working.
Visit an authorized Mercedes-Benz Cen-
ter as soon as possible.
TURN SIG. MIRROR, R
CHECK LIGHT!
The right turn signal in the side mirror is
malfunctioning. This message will only ap-
pear if all light emitting diodes have
stopped working.
Visit an authorized Mercedes-Benz Cen-
ter as soon as possible.
TURN SIG., LF
CHECK LIGHT!
BACK-UP LIGHT ON!
The left front turn signal lamp is malfunc-
tioning. A back-up bulb is being used.
Replace the bulb as soon as possible.
Page 313 of 416
313 Practical hints
What to do if …?
.
TURN SIG., RF
CHECK LIGHT!
BACK-UP LIGHT ON!
The right front turn signal lamp is malfunc-
tioning. A back-up bulb is being used.
Replace the bulb as soon as possible.
HIGH BEAM, L
CHECK LIGHT!
The left high beam lamp is malfunctioning.
Replace the bulb as soon as possible.
HIGH BEAM, R
CHECK LIGHT!
The right high beam lamp is malfunction-
ing.
Replace the bulb as soon as possible.
MARKER LIGHT, FL
CHECK LIGHT!
The front left side marker lamp is malfunc-
tioning.
Replace the bulb as soon as possible.
MARKER LIGHT, FR
CHECK LIGHT!
The front right side marker lamp is mal-
functioning.
Replace the bulb as soon as possible.
FR. L. PARK. LAMP
CHECK LIGHT!
BACK-UP LIGHT ON!
The left parking lamps are malfunctioning.
A back-up bulb is being used.
Replace the bulb as soon as possible.
FR. R. PARK. LAMP
CHECK LIGHT!
BACK-UP LIGHT ON!
The right parking lamps are malfunction-
ing. A back-up bulb is being used.
Replace the bulb as soon as possible.
STANDING LIGHT, L
CHECK LIGHT!
BACK-UP LIGHT ON!
The left standing lamp is malfunctioning. A
back-up bulb is being used.
Replace the bulb as soon as possible.
Display
Possible cause
Suggested solution
Page 314 of 416
314 Practical hintsWhat to do if …?.
STANDING LIGHT, R
CHECK LIGHT!
BACK-UP LIGHT ON!
The right standing signal lamp is malfunc-
tioning. A back-up bulb is being used.
Replace the bulb as soon as possible.
FRONT FOGLIGHT, L
CHECK LIGHT!
The left front fog lamp is malfunctioning.
Visit an authorized Mercedes-Benz Cen-
ter as soon as possible.
FRONT FOGLIGHT, R
CHECK LIGHT!
The right front fog lamp is malfunctioning.
Visit an authorized Mercedes-Benz Cen-
ter as soon as possible.
LOW BEAM, L
CHECK LIGHT!
The left low beam lamp is malfunctioning.
Visit an authorized Mercedes-Benz Cen-
ter as soon as possible.
LOW BEAM, R
CHECK LIGHT!
The right low beam lamp is malfunction-
ing.
Visit an authorized Mercedes-Benz Cen-
ter as soon as possible.
3RD BRAKE LIGHT
CHECK LIGHT!
The high mounted brake lamp is malfunc-
tioning.
Visit an authorized Mercedes-Benz Cen-
ter as soon as possible.
BRAKE LIGHT, L
CHECK LIGHT!
BACK-UP LIGHT ON!
The left brake lamp is malfunctioning. A
back-up bulb is being used.
Visit an authorized Mercedes-Benz Cen-
ter as soon as possible.
BRAKE LIGHT, R
CHECK LIGHT!
BACK-UP LIGHT ON!
The right brake lamp is malfunctioning. A
back-up bulb is being used.
Visit an authorized Mercedes-Benz Cen-
ter as soon as possible.
REVERSE LIGHT, L
CHECK LIGHT!
The left reverse lamp is malfunctioning.
Replace the bulb as soon as possible.
Display
Possible cause
Suggested solution
Page 315 of 416
315 Practical hints
What to do if …?
.
REVERSE LIGHT, R
CHECK LIGHT!
The right reverse lamp is malfunctioning.
Replace the bulb as soon as possible.
REAR FOGLIGHT
CHECK LIGHT!
The rear fog lamp is malfunctioning.
Replace the bulb as soon as possible.
LICENSE PLATE LIGHT, L
CHECK LIGHT!
The left license plate lamp is malfunction-
ing.
Replace the bulb as soon as possible.
LICENSE PLATE LIGHT, R
CHECK LIGHT!
The right license plate lamp is malfunc-
tioning.
Replace the bulb as soon as possible.
TAIL LIGHT, L
CHECK LIGHT!
BACK-UP LIGHT ON!
The left tail lamp is malfunctioning. A
back-up bulb is being used.
Replace the bulb as soon as possible.
TAIL LIGHT, R
CHECK LIGHT!
BACK-UP LIGHT ON!
The right tail lamp is malfunctioning. A
back-up bulb is being used.
Replace the bulb as soon as possible.
TURN SIG., LR
CHECK LIGHT!
BACK-UP LIGHT ON!
The left rear turn signal lamp is malfunc-
tioning. A back-up bulb is being used.
Replace the bulb as soon as possible.
TURN SIG., RR
CHECK LIGHT!
BACK-UP LIGHT ON!
The right rear turn signal lamp is malfunc-
tioning. A back-up bulb is being used.
Replace the bulb as soon as possible.
!
PARK. BRAKE
RELEASE BRAKE!
You are driving with the parking brake en-
gaged.
Release the parking brake (
page 44).
Display
Possible cause
Suggested solution
