
Display messages Possible causes/consequences and
0001 Solutions
0001
Check Rear Left
Sidemarker
Lamp or
Check Rear Right Sidemarker
Lamp The rear lef
torright side marker lamp is defective.
X Check whether you are permitted to replace the bulb yourself
(Y page 113).
or
X Visit a qualified specialist workshop. 0001
Check
Left Daytime
Running
Light or
Check Right Daytime
Running Light The left-hand or right-hand daytime running lamp is faulty.
X
Check whether you are permitted to replace the bulb yourself
(Y page 113).
or
X Visit a qualified specialist workshop. 0001
Active Light
System Inoperative The active light function is defective.
X
Visit a qualified specialist workshop. 0001
Malfunction See
Operator's Manual The exterior lighting is defective.
X
Visit a qualified specialist workshop. 0001
Auto
Lamp Function
Inoperative The light sensor is defective.
X
Visit a qualified specialist workshop. 0001
Switch Off Lights The lights are still switched on when you leave the vehicle. A
warning tone also sounds.
X
Turn the light switch to 0005.Adaptive Highbeam
Assist Inoperative Adaptive Highbeam Assist is faulty.
X
Visit a qualified specialist workshop. Adaptive Highbeam
Assist Currently
Unavailable See
Operator's Manual Adaptive Highbeam Assist is deactivated and temporarily
inoperative. Possible causes are:
R
the windshield in the camera's field of vision is dirty.
R visibility is impaired due to heavy rain, snow or fog.
X Clean the windshield.
If the system detects that the camera is fully operational again,
the Adaptive Highbeam Assist Now Available message is
displayed.
Adaptive Highbeam Assist is operational again. Display messages
225On-board computer and displays Z

Display messages Possible causes/consequences and
0001 Solutions
000A
Remove Start
Button Then Insert
Key The KEYLESS-GO key can continuously not be detected.
KEYLESS-GO is temporarily malfunctioning or is defective. A
warning tone also sounds.
X
Insert the SmartKey into the ignition lock and turn it to the
desired position.
X Visit a qualified specialist workshop. 000A
Close Doors to
Lock Vehicle At leas
tone door is open. Awarning tone also sounds.
X Close all doors and loc kthe vehicle again. Warning and indicator lamps
Safety
Seat belts Problem Possible causes/consequences and
0001 Solutions
0011
After starting the
engine, the red seat
belt warning lamp lights
up for
6seconds. The seat belt warning lamp reminds the driver and fron
tpassenger
to fasten their seat belts.
X Faste nyour seat belt (Y page 53). 0011
After starting the
engine, the red seat
belt warning lamp lights
up. In addition, a
warning tone sounds
for up to six seconds.
The driver's seat belt is not fastened.
X
Fasten your seat belt (Y page 53).
The warning tone ceases. 0011
The red seat belt
warning lamp lights up
after the engine starts,
as soon as the driver's
or the front-passenger
door is closed. The driver or front passenger has not fastened their seat belt.
X
Fasten your seat belt (Y page 53).
The warning lamp goes out. There are objects on the front-passenger seat.
X
Remove the objects from the front-passenger seat and stow
them in a secure place.
The warning lamp goes out. 242
Warning and indicator lampsOn-board computer and displays

Problem Possible causes/consequences and
0001 Solutions
0016
The yellow ABS warning
lamp is lit while the
engine is running.
ABS is temporarily unavailable. BAS, BAS PLUS, ESP
®
, EBD
(electronic brake force distribution), PRE-SAFE ®
,
PRE-SAFE ®
Brake, the HOLD function, hill start assist are therefore
also deactivated, for example.
Possible causes are:
R Self-diagnosis is not yet complete.
R The on-board voltage may be insufficient.
ATTENTION ASSIST is deactivated.
G WARNING
The brake system continues to function normally, but without the
functions listed above. The front and rear wheels could therefore
lock if you brake hard, for example.
The steerability and braking characteristics may be severely
affected. The braking distance in an emergency braking situation
can increase.
If ESP ®
is not operational, ESP ®
is unable to stabilize the vehicle.
There is a risk of an accident.
X Carefully drive a suitable distance, making slight steering
movements at a speed above 12 mph (20 km/h).
The functions mentioned above are available again when the
warning lamp goes out.
If the warning lamp is still on:
X Observe the additional display messages in the multifunction
display.
X Drive on carefully.
X Visit a qualified specialist workshop. Warning and indicator lamps
245On-board computer and displays Z

Problem Possible causes/consequences and
0001 Solutions
000C0014
The yellow ESP
®
and
ESP ®
OFF warning
lamps are lit while the
engine is running. ESP
®
, BAS, BAS PLUS, PRE-SAFE ®
, PRE-SAFE ®
Brake, the HOLD
function and hill start assist are not available due to a malfunction.
ATTENTION ASSIST is deactivated.
G WARNING
The brake system continues to function normally, but without the
functions listed above.
The braking distance in an emergency braking situation can thus
increase.
If ESP ®
is not operational, ESP ®
is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
X Observe the additional display messages in the multifunction
display.
X Drive on carefully.
X Visit a qualified specialist workshop. 000C0014
The yellow ESP
®
and
ESP ®
OFF warning
lamps are lit while the
engine is running. ESP
®
,B AS, PRE-SAFE ®
, the HOLD functio nand hill start assist are
temporarily unavailable.
BAS PLUS and PRE-SAFE ®
Brake may also have failed.
ATTENTION ASSIST is deactivated.
Self-diagnosis is not ye tcomplete.
G WARNING
The brake system continues to function normally, but without the
functions listed above.
The braking distance in an emergency braking situation can thus
increase.
If ESP ®
is not operational, ESP ®
is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
X Carefully drive a suitable distance, making slight steering
movements at a speed above 12 mph (20 km/h).
The functions mentioned above are available again when the
warning lamp goes out.
If the warning lamp is still on:
X Observe the additional display messages in the multifunction
display.
X Drive on carefully.
X Visit a qualified specialist workshop. 248
Warning and indicator lampsOn-board computer and displays

Problem Possible causes/consequences and
0001 Solutions
0005
(USA only)
000A (Canada only)
The red electric parking
brake indicator lamp
flashes or lights up
and/or
000A
warning lamp for the
electric parking brake
lights up. X
Observe the additional display messages in the multifunction
display. 001B
The red SRS warning
lamp is lit while the
engine is running.
There is a malfunction in the SRS (Supplemental Restraint
System).
G WARNING
The air bags or Emergency Tensioning Devices may either be
triggered unintentionally or, in the event of an accident, may not
be triggered.
There is an increased risk of injury.
X Drive on carefully.
X Have SRS checked at a qualified specialist workshop
immediately.
For further information about the Supplemental Restraint System,
see (Y page 39). Warning and indicator lamps
249On-board computer and displays Z

Engine
Problem Possible causes/consequences and
0001 Solutions
0011
The yellow Check
Engine warning lamp
lights up while the
engine is running. There may be a malfunction, for example:
R
in the engine management
R in the fuel injection system
R in the exhaust system
R in the ignition system
R in the fuel system
The emission limit values may be exceeded and the engin emay
be running in emergency mode.
X Have the vehicle checked as soon as possible at a qualified
specialist workshop.
i In some states, you must immediately visit a qualified
specialist workshop as soon as the yellow Chec kEngine warning
lamp lights up .This depends on the locally applicable legal
requirements. If in doubt, check whether such legal regulations
apply in the state in which you are currently driving. 0013
The yellow reserve fuel
warning lamp lights up
while the engine is
running. The fuel level has dropped into the reserve range.
X
Refuel at the nearest gas station. 0013
The yellow reserve fuel
warning lamp flashes
while the vehicle is in
motion.
In addition, the 0011
Check Engine warning
lamp may light up. The fuel system pressure is too low. The fuel filler cap is not closed
correctly or the fuel system is leaking.
X
Check that the fuel filler cap is correctly closed.
X If the fuel filler cap is not correctly closed: close the fuel filler
cap.
X If the fuel filler cap is closed: visit a qualified specialist
workshop. 000F
The red coolant
warning lamp lights up
while the engine is
running and the coolant
temperature gauge is
at the start of the scale. The temperature sensor for the coolant temperature gauge is
defective.
The coolant temperature is no longer being monitored. There is a
risk of engine damage if the coolant temperature is too high.
X
Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions. Do not continue
driving under any circumstances.
X Secure the vehicle against rolling away (Y page 155).
X Consult a qualified specialist workshop. 250
Warning and indicator lampsOn-board computer and displays

Problem Possible causes/consequences and
0001 Solutions
X
Leave the vehicle and keep a safe distance from the vehicle until
the engine has cooled down.
X Check the coolant level and add coolant, observing the warning
notes (Y page 279).
X If you need to add coolant more often than usual, have the
engine coolant system checked.
X Make sure that the air supply to the engine radiator is not
blocked, e.g. by snow, slush or ice.
X At coolant temperatures below 248 ‡(120 †), drive to the next
qualified specialist workshop.
X Avoid subjecting the engine to heavy loads, e.g. driving in
mountainous terrain, and stop-and-go traffic. Driving systems
Problem Possible causes/consequences and
0001 Solutions
000C
The red distance
warning lamp lights up
while the vehicle is in
motion. A warning tone
also sounds.
You are approaching a vehicle or a stationary obstacle in you
rline
of travel at too high a speed.
X Be prepared to brake immediately.
X Pay careful attention to the traffic situation. You may have to
brake or take evasive action.
Further information on DISTRONIC PLUS (Y page 168).
Further information on PRE-SAFE ®
Brake (Y page 65). 252
Warning and indicator lampsOn-board computer and displays

X
Press the outer edge of button 0003and slide
in the direction of the arrow until the bottle
fits into the opening.
X Inser tthe bottle into the bottle holder.
The bottle holder is designed for bottles with
a capacity of 25 fl. oz. (0.7 l) up to 54 fl. oz.
(1.5 l).
The bottle holder does not secure the bottles;
it merely prevents them from tipping over. Sun visors
Overview G
WARNING
Do not use the vanity mirror while driving.
Keep the vanity mirrors in the sun visors
closed while the vehicle is in motion.
Reflected glare can endanger you and others. 0003
Mirror light
0004 Bracket
0024 Retaining strip, e.g. for a car park ticket 0023
Vanity mirror
0021 Mirror cover
i When driving at high speeds with the side
window or roof open:
If you have inserted a car park ticket into
retaining strip 0024, make sure that it is not
blown away by the wind.
Vanity mirror in the sun visor Mirror light
0003only functions if the sun visor
is clipped into retainer 0004and mirror cover
0021 has been folded up.
Glare from the side X
Fold down the sun visor.
X Pull the sun visor out of retainer 0004.
X Swing the sun visor to the side.
X Slide the sun visor forwards and back as
required. Ashtray
X
To open: push the lower section of
cover 0003.
The cover opens.
X To remove the insert: lift insert0024
up 0004 and out.
X To re-install the insert: press insert0024
into the holder until it engages. 260
FeaturesStowage and features