2011 MERCEDES-BENZ CLS-CLASS Owners Manual

Lamps
Display messages
Possible causes/consequences and
X Solutionsb Active
Headlamps
Inoperativ
e The active Bi-Xenon headlamp system is malfunctioning.
X
Contact an authorized Mercedes-Benz Center as soon as
possible. b Active
Headlamps
Auxiliary
Bulb On The active Bi-Xenon headlamps are malfunctioning. Another
light is being used.
X
Contact an authorized Mercedes-Benz Center as soon as
possible. b Reverse
Lamp Left
or
Reverse
Lamp Right The left or right backup lamp is malfunctioning.
X
Contact an authorized Mercedes-Benz Center as soon as
possible. b Brake-/
Tail Lamp
Left
Auxiliary
Bulb On
or
Brake-/
Tail Lamp
Right
Auxiliary
Bulb On The left or right brake/tail lamp is malfunctioning. This
message will only appear if all LEDs have stopped working.
X
Contact an authorized Mercedes-Benz Center as soon as
possible. b 3rd Brake
Lamp The high-mounted brake lamp is malfunctioning. This
message will only appear if all LEDs have stopped working.
X
Contact an authorized Mercedes-Benz Center as soon as
possible. b Front
Foglamp
Left
or
Front
Foglamp
Right The left or right front fog lamp is malfunctioning.
X
Contact an authorized Mercedes-Benz Center as soon as
possible. Vehicle status messages in the multifunction display
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Display messages
Possible causes/consequences and
X Solutionsb Marker
Lamp
Front Left
or
Marker
Lamp
Front
Right The front left side or right side marker lamp is malfunctioning.
X
Contact an authorized Mercedes-Benz Center as soon as
possible. b Parking
Lamp
Front
Left
Auxiliary
Bulb On
or
Parking
Lamp
Front
Right
Auxiliary
Bulb On The left or right front parking lamp is malfunctioning. A
substitute bulb is being used.
X
Halogen headlamp: Replace the bulb as soon as possible
(Y page 266).
X Bi-Xenon headlamp: Contact an authorized Mercedes-
Benz Center as soon as possible. b High Beam
Left
or
High Beam
Right The left or right high-beam lamp is malfunctioning.
X
Replace the bulb as soon as possible (Y page 266). b License
Plate
Lamp Left
or
License
Plate
Lamp Right The left or right license plate lamp is malfunctioning.
X
Replace the bulb as soon as possible (Y page 266). b AUTO-
Light
Inoperativ
e The light sensor is malfunctioning. The headlamps come on
automatically.
X
Contact an authorized Mercedes-Benz Center as soon as
possible.
To switch off the headlamps (U.S. vehicles only):
X In the control system, set daytime running lamp mode to
manual

(Y page 121).
X Switch off the headlamps using the exterior lamp switch
(Y page 87). 248
Vehicle status messages in the multifunction display
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Display messages
Possible causes/consequences and
X Solutionsb Low Beam
Left
or
Low Beam
Right The left or right low-beam lamp is malfunctioning.
X
Halogen headlamp: Replace the bulb as soon as possible
(Y page 266).
X Bi-Xenon headlamp: Contact an authorized Mercedes-
Benz Center as soon as possible. b Rear Left
Foglamp The rear fog lamp is malfunctioning.
X
Contact an authorized Mercedes-Benz Center as soon as
possible. b Switch
Off Lights You have removed the SmartKey from the starter switch,
opened the driver’s door and left the headlamps on or
removed the SmartKey with KEYLESS-GO from the vehicle
and left the headlamps on.
X
Turn the exterior lamp switch to $ or Ã
(Y page 87).
or
X With the rear fog lamp switched on:
Push in the exterior
lamp switch to its stop. b Tail Lamp
Left
Auxiliary
Bulb On
or
Tail Lamp
Right
Auxiliary
Bulb On The left or right tail lamp is malfunctioning. A substitute bulb
is being used.
X
Contact an authorized Mercedes-Benz Center as soon as
possible. b Cornering
Lamp Left
or
Cornering
Lamp Right The left or right corner-illuminating front fog lamp is
malfunctioning.
X
Contact an authorized Mercedes-Benz Center as soon as
possible. b Rear Left
Turn
Signal
or
Rear
Right
Turn
Signal The left or right rear turn signal lamp is malfunctioning.
X
Contact an authorized Mercedes-Benz Center as soon as
possible. Vehicle status messages in the multifunction display
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Display messages
Possible causes/consequences and
X Solutionsb Front
Left Turn
Signal
or
Front
Right
Turn
Signal The left or right front turn signal lamp is malfunctioning.
X
Replace the bulb as soon as possible (Y page 266). b Left
Mirror
Turn
Signal
or
Right
Mirror
Turn
Signal The turn signal in the left or right exterior rear view mirror is
malfunctioning.
This message will only appear if all LEDs have
stopped working.
X Contact an authorized Mercedes-Benz Center as soon as
possible. Tires
Display messages
Possible causes/consequences and
X Solutionsh Please
correct
the tire
pressure. The tire inflation pressure is too low in at least one tire.
or
The tire inflation pressure of the individual tires differ from
each other significantly.
X
Check and correct tire inflation pressure as required
(Y page 185). h Tire
Pressure
Caution
Tire
Defect At least one tire is deflating.
X
Carefully bring the vehicle to a halt, avoiding abrupt
steering and braking maneuvers.
X If necessary, change the wheel (Y page 271). h Tire
Pressure
Check
Tires The tire inflation pressure in at least one tire is significantly
below the reference value.
X
Carefully bring the vehicle to a halt, avoiding abrupt
steering and braking maneuvers.
X Check and adjust tire inflation pressure as required.
X If necessary, change the wheel (Y page 271). 250
Vehicle status messages in the multifunction display
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G
Warning!
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. Continued driving with a flat tire will cause excessive heat build-up
and possibly a fire. G
Warning!
Follow recommended tire inflation pressures.
Do not underinflate tires. Underinflated tires wear excessively and/or unevenly, adversely affect
handling and fuel economy, and are more likely to fail from being overheated.
Do not overinflate tires. Overinflated tires can adversely affect handling and ride comfort, wear
unevenly, increase stopping distance, and result in sudden deflation (blowout) because they are
more likely to become punctured or damaged by road debris, potholes etc. What to do if …
Lamps in instrument cluster
Notes If any of the following lamps in the instrument
cluster fails to come on during the bulb self-
check when switching on the ignition, have
the respective bulb checked and replaced if
necessary.
When you switch on the ignition, all lamps in
the instrument cluster come on. The low-
beam headlamp indicator lamp, high-beam
headlamp indicator lamp, and turn signal
indicator

lamps will only come on if activated.
If a lamp in the instrument cluster fails to
come on when the ignition is switched on,
have it checked and replaced if necessary. What to do if …
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Brake
Problem
Possible causes/consequences and
X Solutions!
The yellow ABS
indicator lamp
comes on while
the engine is
running. The ABS has detected a malfunction and switched off. The BAS,
the ESP
®
, the EBP, and the PRE-SAFE ®
system are also switched
off.
The brake system is still functioning normally but without the
systems specified above available.
If the ABS control unit is malfunctioning, other systems such as
the
navigation system or the automatic transmission may also be
malfunctioning.
X Continue driving with added caution. Wheels may lock during
hard braking, reducing steering capability.
X Adjust driving to be consistent with reduced braking
responsiveness.
X Read and observe messages that may appear in the
multifunction display

(Y page 228).
X 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. !
The yellow ABS
indicator lamp
comes on while
the engine is
running. The ABS has switched off due to insufficient power supply.
The battery might not be charged sufficiently.
When the voltage is above the required value again, the ABS is
operational again. The ABS indicator lamp should go out.
X
Continue driving with added caution. Wheels may lock during
hard braking, reducing steering capability.
X Adjust driving to be consistent with reduced braking
responsiveness.
X Read and observe messages that may appear in the
multifunction display

(Y page 228).
X If the ABS indicator lamp does not go out: Have the alternator
and the battery checked. $ (USA only)
J (Canada only)
The red brake warning
lamp comes on while
driving and an acoustic
warning sounds. You are driving with the parking brake engaged.
X
Release the parking brake. 252
What to do if …
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Problem
Possible causes/consequences and
X Solutions$ (USA only)
J (Canada only)
The red brake warning
lamp comes on while
the engine is running
and an acoustic
warning sounds. There is insufficient brake fluid in the reservoir.
Risk of accident!
X
Do not drive any further. Stop the vehicle in a safe location as
soon as it is safe to do so.
X Engage the parking brake.
X Read and observe messages that may appear in the
multifunction display
(Y page 228).
X Contact an authorized Mercedes-Benz Center.
Do not add brake fluid! This will not solve the problem. G
Warning!
Driving with the brake warning lamp
illuminated can result in an accident. Have
your

brake system checked immediately if the
brake warning lamp stays on. 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 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.
Safety systems Problem
Possible causes/consequences and
X Solutions7
The red seat belt
telltale comes
on for a
maximum of
6 seconds after
starting the
engine. The seat belt telltale reminds you and your passengers to fasten
your seat belts before driving off.
X
Fasten your seat belts.
Regardless of whether the seat belts are fastened or not, the seat
belt telltale always comes on and remains lit for 6 seconds after
starting the engine. 7
The red seat belt
telltale comes
on. In addition
you hear a
warning chime
for a maximum
of 6 seconds
after

starting the
engine. You have forgotten to fasten your seat belt.
X
Fasten your seat belt.
The warning chime stops sounding. What to do if …
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Problem
Possible causes/consequences and
X Solutions7
The red seat belt
telltale comes
on while the
vehicle is
standing still
and
the engine is
running or while
driving. You and/or your front passenger have forgotten to fasten your
seat belts.
X
Fasten your seat belts.
The seat belt telltale goes out. There are items placed on the front passenger seat and therefore
the system senses the front passenger seat as being occupied.
X
Remove the items from the front passenger seat and put them
in a safe place.
The seat belt telltale goes out. 7
The red seat belt
telltale flashes
while driving. In
addition, an
intermittent
warning chime
sounds with
increasing
intensity. The vehicle’s speed once exceeded 15 mph (25 km/h) and you
and/or your front passenger have forgotten to fasten your seat
belts.
X
Fasten your seat belts.
The seat belt telltale goes out and the warning chime stops
sounding. There are items placed on the front passenger seat and therefore
the system senses the front passenger seat as being occupied.
X
Remove the items from the front passenger seat and put them
in a safe place.
The seat belt telltale goes out and the warning chime stops
sounding. i
After
60 seconds with an unfastened seat belt the warning chime stops sounding and the
seat belt telltale illuminates continuously. The seat belt telltale will only go out if both, the
driver and front passenger’s seat belt are fastened, or the vehicle is standing still and a front
door is opened. Problem
Possible causes/consequences and
X Solutions+
The red SRS
indicator lamp
comes on while
driving. There is a malfunction in the restraint systems. The air bags or
Emergency

Tensioning Devices (ETDs) could deploy unexpectedly
or fail to activate in an accident.
X Drive with added caution to the nearest authorized Mercedes-
Benz Center. G
Warning!
In the event a malfunction of the SRS is
indicated
as outlined above, the SRS may not
be operational. For your safety, we strongly recommend that
you contact 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 254
What to do if …
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