Page 211 of 305
Display
messages 208 Display messages Possible cause/consequence Possible solution
G
Risk of accident
ESP ®
is unavailable due to undervoltage.
The battery is, for example, not being
charged.
The following systems are also unavaila-
ble:
R BAS
R the steering assistant STEER CONTROL
R hill start assist
R the tyre pressure loss warning system
The brake system continues to function
normally, but without the functions listed
above. X
Drive on carefully.
X Visit a qualified specialist workshop immedi-
ately.
X Observe the additional messages in the multi-
function display ( Ypage 202). Practical advice
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Page 212 of 305

Display
messages 209Display messages Possible cause/consequence Possible solution
ESP inoperative See
Owner's Manual G
Risk of accident
ESP ®
is unavailable due to a malfunction.
The following systems are also unavaila-
ble:
R BAS
R the steering assistant STEER CONTROL
R hill start assist
R the tyre pressure loss warning system
The brake system continues to function
normally, but without the functions listed
above. X
Drive on carefully.
X Visit a qualified specialist workshop immedi-
ately. Vehicle Consult workshop The multi-function display additionally
shows an
Fin the position display.
Safe operation of AUTOTRONIC* can no
longer be fully guaranteed. X
Stop in accordance with traffic conditions.
X Move the selector lever to P.
X Turn the key to position 0in the ignition lock.
X Wait at least 10 seconds before restarting the
engine.
X Move the selector lever to position Dor R.
X Drive on carefully.
X Have the transmission checked immediately at
a qualified specialist workshop. Shift to N to start
Vehicles with AUTOTRONIC*: the selector
lever is not in position
Nor P. X
Move the selector lever to position Nor P. Practical advice
* optional
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Page 216 of 305

Display
messages 213Display messages Possible cause/consequence Possible solution
D The engine fan is fa
ulty. X
If the coolant temperature is less than 120 †,
you can continue driving to the nearest quali-
fied specialist workshop.
X Avoid subjecting the engine to heavy loads, e.g.
driving in mountainous terrain, and stop-and-
go driving. # The battery is not being charged. One (or
more) of the following could be the cause:
R
a faulty alternator
R a torn poly-V-belt
R a malfunction in the electronics X
Stop immediately and safely when traffic con-
ditions permit and switch off the engine.
X Check the poly-V-belt.
X If the poly-V-belt is torn: do not continue
driving. Consult a qualified specialist work-
shop.
X If the poly-V-belt is not damaged: have the
vehicle checked immediately at a qualified spe-
cialist workshop. The on-board voltage is too high. X
Have the alternator checked at a qualified spe-
cialist workshop. 2 Brake wear The brake pads/linings have reached
their wear limit. X
Visit a qualified specialist workshop. Practical advice
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Page 217 of 305

Display
messages 214 Display messages Possible cause/consequence Possible solution
3 Check brake fluid
level
G
Risk of accident
There is insufficient brake fl uid in the
brake fluid reservoir. X
Pull over and stop the vehicle safely, paying
attention to road and traffic conditions. Do not
continue driving under any circumstances.
X Consult a qualified specialist workshop.
X Do not top up the brake fluid. This will not rec-
tify the fault. ! Release parking
brake You are driving with the parking brake
applied. X
Release the parking brake. [ Clean fuel filter There is water in the fuel filter. The water
must be drained off
27
. X
Visit a qualified specialist workshop. D Coolant Stop car,
turn eng. off The coolant is too hot. X
Pull over and stop the vehicle safely and switch
off the engine, paying attention to road and
traffic conditions.
X Make sure, that the air supply to the radiator
is not blocked, e.g. by slush.
X Restart the engine only when the display mes-
sage disappears. Otherwise, there is a risk of
engine damage.
X Pay attention to the coolant temperature dis-
play.
X If the temperature increases again, visit a quali-
fied specialist workshop immediately. 27
Only for certain countries. Practical advice
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Page 220 of 305

Display
messages 217Display messages Possible cause/consequence Possible solution
. Turn signal rear
left
or
Turn signal rear
right The rear left-hand or rear right-hand turn
signal is fa
ulty. X
Change the bulb (Y page 245). . Turn signal left
mirror
or
Turn signal right
mirror The turn signal in the left-hand or right-
hand exterior mirror is faulty. This display
message will only appear if all LEDs are
faulty. X
Visit a qualified specialist workshop. . Turn signal front
left
or
Turn signal front
right The front left-hand or front right-hand turn
signal is faulty. X
Change the bulb (Y page 245). . Brake/tail lamp
left
or
Brake/tail lamp
right Vehicles with light and visibility pack-
age*: the left-hand or right-hand brake
lamp is faulty. X
Change the bulb (Y page 245). . 3rd brake lamp Vehicles with the lights and visibility pack-
age*: the third brake lamp is faulty. The
display message will only appear if all
LEDs are faulty. X
Visit a qualified specialist workshop. Practical advice
* optional
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Page 227 of 305

Troubleshooting
224 Warning and indicator lamps in the instrument cluster
Problem Possible cause/consequence Suggested solutions
-
Theyellow ABS warning
lamp comes on while the
engine is running. G
Risk of accident
ABS (Anti-lock Brake System) is
deactivated due to a fault. There-
fore, ESP ®
(Electronic Stability
Program), BAS (Brake Assist), the
steering assistant STEER CON-
TROL, the hill start assist and the
tyre pressure loss warning sys-
tem are also deactivated.
The brake system continues to
function normally, but without
electronic support. The wheels
could therefore lock if you brake
hard.
If the ABS control unit is faulty,
other systems may also not be
available: e.g. Parktronic sys-
tem*, the navigation system* or
the Autotronic*. X
Drive on carefully.
X Observe the additional messages in the multi-function display
(Y page 202).
X Visit a qualified specialist workshop. -
The yellow ABS warning
lamp comes on while the
engine is running. G
Risk of accident
The on-board voltage is too low.
ABS has been deactivated due to
undervoltage. X
Switch off consumers that are not required, e g. reading lamps or
interior lighting.
ABS will be available again as soon as the vehicle's electrical sys-
tem voltage increases. Practical advice
* optional
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Page 228 of 305

Troubleshooting
225Problem Possible cause/consequence Suggested solutions
Therefore, ESP
®
, BAS, the steer-
ing assistant STEER CONTROL,
hill start assist and the tyre pres-
sure loss warning system are also
deactivated.
The brake system continues to
function normall y, but without
electronic support. The wheels
could therefore lock if you brake
hard. v
The yellow ESP ®
warning
lamp is lit while the engine
is running. In addition, a
message appears in the
multi-function display. G
Risk of accident
ESP ®
is unavailable due to a mal-
function.
The following systems have also
been deactivated:
R BAS
R the steering assistant STEER
CONTROL
R hill start assist
R the tyre pressure loss warning
system
The braking system remains
available with full brake boosting
effect but without the above func-
tions. X
Observe the additional messages in the multi-function display
(Y page 202).
X Drive on carefully.
X Visit a qualified specialist workshop. Practical advice
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Page 229 of 305

Troubleshooting
226 Problem Possible cause/consequence Suggested solutions
v
Theyellow ESP ®
warning
lamp flashes while the
vehicle is in motion. G
Risk of accident
ESP ®
or traction control has
intervened because there is a risk
of skidding or at least one wheel
has started to spin. X
Only depress the accelerator pedal as far as necessary when pull-
ing away.
X Release the accelerator pedal while you are driving.
X Adapt your driving style to suit the road and weather conditions.
X Do not deactivate ESP ®
. 1
The red SRS warning lamp
is lit while the engine is
running. G
Risk of injury
There is a malfunction in the
restraint system. The airbags or
belt tensioners may either be trig-
gered unintentionally or, in the
event of an accident, not be trig-
gered at all. X
Visit a qualified specialist workshop immediately. 1
The red SRS warning lamp
is lit while the engine is
running. In addition, the
indicator lamp 5
PASSENGER AIRBAG OFF
flashes in the centre con-
sole and a warning tone
sounds. The connector on the removable
front-passenger seat* is
detached. X
Attach the connector to the coupling on the seat (Y page 156).H
The red brake system
warning lamp comes on
while you are driving. A
warning tone also sounds. You are driving with the parking
brake applied. X
Release the parking brake.
The warning lamp goes out and the warning tone ceases. Practical advice
* optional
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