
Display messages
Possible causes/consequences and
X
X Solutions J Check
brake
fluid
level
G
Risk of accident
There is insufficient brake fluid in the brake fluid reservoir. In
addition, the Jwarning lamp in the instrument cluster
lights up and a warning tone sounds.
X Pull over and stop the vehicle safely as soon as possible,
paying attention to road and traffic conditions. Do not con-
tinue driving under any circumstances.
X Consult a qualified specialist workshop.
Do not top up the brake fluid. This will not rectify the fault. J Release
parking
brake You are driving with the parking brake applied. A warning tone
also sounds.
X
Release the parking brake. J EBD, ABS
and ESP
inopera‐
tive See
Owner's
Manual
G
Risk of accident
EBV (electronic brake force distribution), ABS, ESP ®
, BAS,
PRE-SAFE ®
, the HOLD function, hill start assist and ESP ®
trailer stabilisation are unavailable due to a malfunction. In
addition, the ä,åand! warning lamps in the
instrument cluster light up and a warning tone sounds.
The brake system continues to function normally, but without
the functions listed above. ATTENTION ASSIST is deactivated.
X Drive on carefully.
X Visit a qualified specialist workshop immediately. 266
Display
messagesPractical advice
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Display messages
Possible causes/consequences and
X
X Solutions J Brake
immedi‐
ately A malfunction has occurred while the HOLD function or Dis-
tronic Plus* is active.
or
Vehicles with manual transmission: with the HOLD function
activated, you have either:
R
opened the driver's door and released the seat belt or
R switched off the engine or
R opened the bonnet
A tone may also sound at regular intervals. The tone becomes
louder if you attempt to lock the vehicle.
You cannot start the engine.
X Paying attention to the traffic situation, immediately
depress the brake pedal firmly and hold until the display
message disappears.
X Prevent the vehicle from rolling away before you leave it
(Y page 107).
You can restart the engine. ? Coolant
Stop vehi‐
cle
Switch
engine off The coolant is too hot. In addition, the
?warning lamp in
the instrument cluster lights up and a warning tone sounds.
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 Wait until the display message disappears before restarting
the engine. Otherwise, there is a risk of engine damage.
X Observe the coolant temperature gauge.
X If the coolant temperature increases again, visit a qualified
specialist workshop immediately. The poly-V-belt may have torn. A warning tone also sounds.
X
Pull over and stop the vehicle safely and switch off the
engine, paying attention to road and traffic conditions.
X Check the poly-V-belt.
X If the poly-V-belt is not damaged: do not start the engine
again until the display message goes out. Otherwise, there
is a risk of engine damage.
X If the poly-V-belt is torn: do not continue driving. Consult
a qualified specialist workshop. Display
messages
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Display messages
Possible causes/consequences and
X
X Solutions D inopera‐
tive See
Owner's
Manual
G
Risk of accident
The power steering assistance is reduced. You will need to
use more force to steer. A warning tone also sounds.
X Check whether you are able to apply the extra force
required.
X If you are able to steer safely: carefully drive on to a
qualified specialist workshop.
X If you are unable to steer safely: do not drive on. Contact
the nearest qualified specialist workshop. b Left cor‐
nering
light
or
Right cor‐
nering
light
The left-hand or right-hand cornering lamp* is faulty.
X
Visit a qualified specialist workshop. b Left
dipped
beam
or
Right
dipped
beam The left-hand or right-hand dipped-beam headlamp is faulty.
X
Halogen headlamps: replace the bulb (Ypage 304).
X Bi-xenon headlamp*: visit a qualified specialist workshop.b Active
Light Sys‐
tem inop‐
erative
The active light function* is faulty.
X
Visit a qualified specialist workshop. b Trailer
left indi‐
cator
or
Trailer
right
indic. The left-hand or right-hand trailer turn signal lamp is faulty.
X
Change the bulb. b Trailer
brake lamp The trailer brake lamp is faulty.
X
Change the bulb. 270
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messagesPractical advice
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Display messages
Possible causes/consequences and
X
X Solutions b Trailer
left tail
lamp
or
Trailer
right
tail lamp The left-hand or right-hand trailer tail lamp is faulty.
X
Change the bulb. b AUTO
lights
inopera‐
tive The light sensor is faulty.
X
Visit a qualified specialist workshop. b Rear left
indicator
or
Rear
right
indicator The rear left-hand or right-hand turn signal is faulty.
X
Visit a qualified specialist workshop. b Left mir‐
ror indi‐
cator
or
Right mir‐
ror indi‐
cator The turn signal in the left-hand or right-hand exterior mirror
is faulty. The display message will only appear if all LEDs have
failed.
X
Visit a qualified specialist workshop. b Front
left indi‐
cator
or
Front
right
indicator The front left-hand or right-hand turn signal is faulty.
X
Change the bulb ( Ypage 304). b Third
brake lamp The third brake lamp is faulty. The display message will only
appear if all LEDs have failed.
X
Visit a qualified specialist workshop. Display
messages
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Display messages
Possible causes/consequences and
X
X Solutions b Left-hand
tail lamp/
brake lamp
or
Right-
hand tail
lamp/
brake lamp The left-hand or right-hand tail lamp/brake lamp is faulty. The
display message will only be shown if several LEDs have
failed.
X
Visit a qualified specialist workshop. b Left main
beam
or
Right
main beam The left-hand or right-hand main beam headlamp is faulty.
X
Halogen headlamps: replace the bulb (Ypage 304).
X Bi-xenon headlamp*: visit a qualified specialist workshop.b Intell.
Light Sys‐
tem inop‐
erative
The Intelligent Light System* is faulty. The lights remain avail-
able without the Intelligent Light System*.
X
Visit a qualified specialist workshop. b Left
licence
plate lamp
or
Right
licence
plate lamp The left-hand or right-hand licence plate lamp is faulty.
X
Visit a qualified specialist workshop. b Left fog
lamp
or
Right fog
lamp
The front left-hand or right-hand foglamp* is faulty.
X
Visit a qualified specialist workshop. b Rear left
fog lamp
or
Rear
right fog
lamp The left-hand or right-hand rear foglamp is faulty. The display
message will only be shown if several LEDs have failed.
X
Visit a qualified specialist workshop. 272
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Problem
Possible causes/consequences and
X
X Solutions Vehicles with the ECO
Start/Stop function:
you have started the
engine using the key.
The indicator lamp in
the ECO Start/Stop
function button does
not light up or goes out
again after a short time. You have deactivated the ECO Start/Stop function.
X
Activate the ECO Start/Stop function again (Y page 109). The ECO Start/Stop function is not available due to a fault.
X If the indicator lamp fails persistently, consult a qualified work-
shop. Warning and indicator lamps in the instrument cluster
Problem
Possible causes/consequences and
X
X Solutions !
The yellow ABS
warning lamp is
lit while the
engine is run-
ning. G
Risk of accident
ABS (Anti-lock Brake System) is deactivated due to a fault. For this
reason, ESP ®
(Electronic Stability Program), BAS (Brake Assist),
BAS PLUS* (Brake Assist PLUS), PRE-SAFE ®
, PRE-SAFE ®
Brake*,
the HOLD function, hill start assist and ESP ®
trailer stabilisation
are also deactivated, for example.
The brake system continues to function normally, but without the
functions listed above. Therefore, the wheels could lock if you
brake hard.
ATTENTION ASSIST is deactivated.
X Observe the additional messages in the multi-function display
(Y page 251).
X Drive on carefully.
X Visit a qualified specialist workshop. ·
The red distance
warning lamp*
lights up while
the vehicle is in
motion. G
Risk of accident
The distance to the vehicle in front is too small for the speed
selected.
X Increase the distance. ·
The red distance
warning lamp*
lights up while
the vehicle is in
motion. A warn-
ing tone also
sounds. G
Risk of accident
You are approaching a vehicle in front at too great 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. Troubleshooting
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Problem
Possible causes/consequences and
X XSolutions ·
The red distance
warning lamp*
lights up while
the vehicle is in
motion. A warn-
ing tone also
sounds. G
Risk of accident
Distronic Plus* has detected a stationary obstacle in your line of
travel. The vehicle will not be braked automatically.
X Be prepared to brake immediately.
X Pay careful attention to the traffic situation. You may have to
brake or take evasive action. ä
å
!
The yellow ESP
®
and ESP ®
OFF
warning lamps
and the yellow
ABS warning
lamp are lit while
the engine is
running. G
Risk of accident
ABS and ESP ®
are faulty. Other systems, e.g. BAS, BAS PLUS*,
PRE-SAFE ®
, PRE-SAFE ®
Brake*, the HOLD function, hill start
assist and ESP ®
trailer stabilisation, are also unavailable due to a
malfunction. The brake system continues to function normally, but
without the functions listed above. Therefore, the wheels could
lock if you brake hard, for example.
ATTENTION ASSIST is deactivated.
X Observe the additional messages in the multi-function display
(Y page 251).
X Drive on carefully.
X Visit a qualified specialist workshop. ä
The yellow 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.
Cruise control or Distronic Plus* is deactivated.
X Only depress the accelerator pedal as far as necessary when
pulling 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 ®
.
Exceptions: all models, except E 63 AMG (Y page 61), E 63 AMG
(Y page 62). å
The yellow ESP ®
OFF warning
lamp is lit while
the engine is
running. G
Risk of accident
ESP ®
and ESP ®
trailer stabilisation are deactivated. ESP ®
will not
stabilise the vehicle if it starts to skid or if a wheel starts to spin.
X Reactivate ESP ®
.
Exceptions: all models, except E 63 AMG (Y page 61), E 63 AMG
(Y page 62).
X Adapt your driving style to suit the road and weather conditions. 282
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Problem
Possible causes/consequences and
X
X Solutions ì
E 63 AMG:
The yellow ESP ®
Sport warning
lamp lights up
while the engine
is running. G
Risk of accident
ESP ®
Sport is activated. ESP ®
only stabilises the vehicle in
extreme situations. ESP ®
intervention may not be able to provide
sufficient assistance in such situations and the vehicle may start
to skid.
X Reactivate ESP ®
.
Exceptions: (Y page 62) ä
å
The yellow ESP
®
and ESP ®
OFF
warning lamps
are lit while the
engine is run-
ning. G
Risk of accident
ESP ®
, BAS, BAS PLUS*, PRE-SAFE ®
, PRE-SAFE ®
Brake*, the
HOLD function, hill start assist, the adaptive brake lights and
ESP ®
trailer stabilisation are unavailable due to a malfunction.
ESP ®
will not stabilise the vehicle if it starts to skid or if a wheel
starts to spin.
The brake system continues to function normally, but without the
functions listed above.
ATTENTION ASSIST is deactivated.
X Observe the additional messages in the multi-function display
(Y page 251).
X Drive on carefully.
X Visit a qualified specialist workshop. 6
The red SRS
warning lamp is
lit while the
engine is run-
ning. G
Risk of injury
There is a malfunction in the restraint system. The airbags or belt
tensioners may either be triggered unintentionally or, in the event
of an accident, not be triggered at all.
X Visit a qualified specialist workshop immediately. J
The yellow
reserve fuel
warning lamp
lights up while
the engine is
running. G
Risk of accident
The brake system is malfunctioning and the braking characteris-
tics may be affected.
X If the multi-function display shows a display message, please
observe this (Y page 251).
X Drive on carefully.
X Visit a qualified specialist workshop. Troubleshooting
283Practical advice
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