
Display messages
Possible causes/consequences and
X
X Solutions # The alternator or vehicle's electrical system is faulty.
The battery is not being charged.
X
Pull over and stop the vehicle safely, paying attention to
road and traffic conditions and leave the engine running.
X Open the bonnet.
X Check whether the poly-V-belt is torn.
If the poly-V-belt is torn:
! Do not continue driving. The engine could otherwise over-
heat.
X Switch off the engine.
X Consult a qualified specialist workshop.
If the poly-V-belt is intact:
X Visit a qualified specialist workshop. ? The engine fan is faulty.
X
Make sure that the coolant temperature does not exceed
120 †.
X Avoid subjecting the engine to heavy loads (e.g. driving in
mountainous terrain) and stop-and-go driving.
X Drive to the nearest qualified specialist workshop. J ABS and
ESP inop‐
erative
See Own‐
er's Man‐
ual
G
Risk of accident
ABS (Anti-lock Braking System), ESP ®
(Electronic Stability
Program), BAS (Brake Assist), PRE-SAFE ®
, HOLD, hill start
assist, the adaptive brake lights and ESP ®
trailer stabilisation
are unavailable due to a malfunction. In addition, the ÷,
å and! warning lamps light up in the instrument clus-
ter. The brake system continues to function normally, but
without the functions listed above.
BAS PLUS* (Brake Assist PLUS) and PRE-SAFE ®
Brake *may
be inoperative as well.
X Drive on carefully.
X Visit a qualified specialist workshop. Display messages
331Practical advice
* optional
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Display messages
Possible causes/consequences and
X
X Solutions J ABS and
ESP cur‐
rently
unavaila‐
ble See
Owner's
Manual G
Risk of accident
ABS, ESP ®
, BAS, PRE-SAFE ®
, HOLD, hill start assist, the adap-
tive brake lights and ESP ®
trailer stabilisation are temporarily
unavailable. Self diagnosis is not yet complete. In addition,
the ÷, åand! warning lamps light up in the instru-
ment cluster. The brake system continues to function nor-
mally, but without the functions listed above.
BAS PLUS* and PRE-SAFE ®
Brake* may have failed.
X On a suitable stretch of road, carefully manoeuvre the vehi-
cle slightly to the left and right at a speed above 20 km/h
until the display message disappears. G
Risk of accident
ABS, ESP ®
, BAS, PRE-SAFE ®
, HOLD, hill start assist, the adap-
tive brake lights and ESP ®
trailer stabilisation are temporarily
unavailable. The on-board voltage may, for example, be insuf-
ficient. In addition, the ÷,åand! warning lamps
light up in the instrument cluster. The brake system continues
to function normally, but without the functions listed above.
BAS PLUS* and PRE-SAFE ®
Brake* may have failed.
X Drive on carefully.
X Visit a qualified specialist workshop. ÷ inopera‐
tive See
Owner's
Manual
or
System
Inopera‐
tive
G
Risk of accident
ESP ®
, BAS, PRE-SAFE ®
, HOLD, hill start assist, the adaptive
brake lights and ESP ®
trailer stabilisation are temporarily
unavailable due to a malfunction. BAS PLUS* and PRE-
SAFE ®
Brake* may have failed. In addition, the ÷and
å warning lamps light up in the instrument cluster.
X Drive on carefully.
X Visit a qualified specialist workshop. 332
Display
messagesPractical advice
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Display messages
Possible causes/consequences and
X
X Solutions ÷ currently
unavaila‐
ble See
Owner's
Manual
G
Risk of accident
ESP ®
, BAS, PRE-SAFE ®
, HOLD, hill start assist, the adaptive
brake lights and ESP ®
trailer stabilisation are temporarily
unavailable. The self diagnosis function might not be com-
plete, for example. The brake system continues to function
normally, but without the functions listed above. In addition,
the ÷ andå warning lamps light up in the instrument
cluster.
BAS PLUS* and PRE-SAFE ®
Brake* may have failed.
X On a suitable stretch of road, carefully manoeuvre the vehi-
cle slightly to the left and right at a speed above 20 km/h
until the display message disappears. G
Risk of accident
ESP ®
, BAS, PRE-SAFE ®
, HOLD, hill start assist, the adaptive
brake lights and ESP ®
trailer stabilisation are temporarily
unavailable due to undervoltage. The battery might not be
charging, for example. The brake system continues to func-
tion normally, but without the functions listed above.
BAS PLUS* and PRE-SAFE ®
Brake* may have failed.
X Drive on carefully.
X Visit a qualified specialist workshop. The
÷ warning lamp flashes.
G Risk of accident
ETS (Electronic Traction System) is deactivated.
BAS PLUS* and PRE-SAFE ®
Brake* may have failed.
X Let the brakes cool down until the display message disap-
pears and the ÷warning lamp goes out.
ETS is reactivated. 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. Display
messages
333Practical advice
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Display messages
Possible causes/consequences and
X
X Solutions J EBV, ABS
and ESP
inopera‐
tive See
Owner's
Manual
G
Risk of accident
EBV (electronic brake force distribution), ABS, ESP ®
, BAS,
PRE-SAFE ®
, HOLD, hill start assist, the adaptive brake lights
and ESP ®
trailer stabilisation are unavailable due to a mal-
function. In addition, the ÷,å,J and! 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.
BAS PLUS* and PRE-SAFE ®
Brake* may have failed.
X Drive on carefully.
X Visit a qualified specialist workshop. # Check
brake wear The brake pads/linings have reached their wear limit.
X
Visit a qualified specialist workshop. ! Release
parking
brake !
The indicator lamp (red) flashes and a warning tone
sounds.
You are driving with the electric parking brake applied.
X Release the electric parking brake.
or
X Pull away carefully (Y page 205). !
The indicator lamp (red) flashes and a warning tone
sounds.
You are making an emergency stop using the electric parking
brake (Y page 205).
X After the emergency stop: release the electric parking
brake lever. 334
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messagesPractical advice
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Display messages
Possible causes/consequences and
X
X Solutions !
The indicator lamp (red) flashes, the warning lamp (yel-
low) lights up and a warning tone sounds.
The electric parking brake is faulty and the braking effect is
restricted.
While the vehicle is in motion:
X Release the electric parking brake handle.
While the vehicle is stationary:
X Switch off the ignition and turn it back on.
X Release the electric parking brake.
If the display message continues to be shown:
X Shift the transmission to P.
X Use the folding wheel chock (Y page 315) from the vehicle
tool kit to prevent the vehicle from rolling away.
X Consult a qualified specialist workshop. ! Parking
brake See
Owner's
Manual !
The warning lamp (yellow) lights up. Additionally the
indicator lamp (red) lights up.
The electric parking brake is malfunctioning.
To release:
X Pull the electric parking brake handle.
or
X Pull away carefully (Y page 205).
X Visit a qualified specialist workshop.
To apply:
X Switch off the ignition.
X Pull the electric parking brake lever for at least ten seconds,
until the display message disappears.
If the display message continues to be shown:
X Shift the transmission to P.
X Use the folding wheel chock (Y page 315) from the vehicle
tool kit to prevent the vehicle from rolling away.
X Consult a qualified specialist workshop. Display
messages
335Practical advice
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Display messages
Possible causes/consequences and
X
X Solutions !
The indicator lamp (red) flashes.
The power supply for the electric parking brake was interrup-
ted.
X Pull the electric parking brake handle.
or
X Pull away carefully (Y page 205).
or
X Pull the electric parking brake lever until the display mes-
sage disappears. !
The indicator lamp (red) flashes, the warning lamp (yel-
low) lights up and a warning tone sounds.
The electric parking brake is malfunctioning.
X Switch off the ignition and turn it back on.
X Engage or release the electric parking brake.
or
X Pull away carefully (Y page 205).
X Visit a qualified specialist workshop. !
The warning lamp (yellow) lights up. In addition, the
indicator lamp (red) flashes for about 10 seconds after the
electric parking brake has been engaged or released. It then
goes out or remains lit.
The electric parking brake is malfunctioning, e.g. because of
over- or undervoltage.
X Pull away carefully (Y page 205).
X Visit a qualified specialist workshop.
In case of over- or undervoltage:
X Remove the cause for the over- or undervoltage, e.g. by
charging the battery or restarting the engine.
X Switch the ignition off and on, and then engage or release
the electric parking brake.
If this does not release the electric parking brake:
X Do not drive on.
X Consult a qualified specialist workshop. 336
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Display messages
Possible causes/consequences and
X
X Solutions !
The warning lamp (yellow) lights up. In addition, the
indicator lamp (red) flashes for about 10 seconds after the
electric parking brake has been engaged or released. It then
goes out or remains lit.
The electric parking brake has overheated.
X Allow the vehicle to cool down. Do not engage or release
the electric parking brake during this time.
X Prevent the vehicle from rolling away before you leave it
(Y page 204).
X When the vehicle has cooled down: switch the ignition off
and on again, then engage or release the electric parking. ! Parking
brake
inopera‐
tive !
The warning lamp (yellow) lights up. In addition, the
indicator lamp (red) flashes for about 10 seconds after the
electric parking brake has been engaged or released. It then
goes out or remains lit.
The electric parking brake is malfunctioning.
X Switch the ignition off and on, and then engage the electric
parking brake.
If it is not possible to engage the electric parking brake:
X Shift the transmission to P.
X Use the folding wheel chock (Y page 315) from the vehicle
tool kit to secure the vehicle against rolling away.
X Visit a qualified specialist workshop. ! Turn on
the igni‐
tion to
release
the park‐
ing brake !
The indicator lamp (red) flashes.
You attempted to release the electric parking brake while the
ignition was switched off.
X Key: turn the key to position 1in the ignition lock.
X KEYLESS GO*: switch on the ignition. Display
messages
337Practical advice
* optional
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Display messages
Possible causes/consequences and
X
X Solutions ¨ Stop vehi‐
cle Vehi‐
cle too
low
G
Risk of accident
The vehicle level control system* is malfunctioning.
X Do not exceed a maximum speed of 80 km/h.
X Make only slight steering movements. Otherwise, the front
wing or the tyres could be damaged when you drive on.
X Listen for scraping sounds.
X Pull over and stop the vehicle, paying attention to road and
traffic conditions, and select a higher vehicle level.
The vehicle may be raised, depending on the type of mal-
function.
X Visit a qualified specialist workshop. The vehicle level is too low.
X
Pull over and stop the vehicle safely, paying attention to
road and traffic conditions.
After a few seconds, the vehicle level is adjusted and the
display message disappears. ¨ Vehicle
rising
Please
wait
briefly The vehicle level is too low when the vehicle is stationary.
X
Remain stationary.
X Wait until the display message disappears.
The vehicle has reached the level required for driving. ¨ Malfunc‐
tion
G
Risk of accident
The AIRMATIC* function is restricted. The vehicle's handling
characteristics may be affected.
X Do not exceed a maximum speed of 80 km/h.
X Visit a qualified specialist workshop. 6 Restraint
system
malfunc‐
tion Con‐
sult work‐
shop
G
Risk of injury
The restraint system is faulty.
X Visit a qualified specialist workshop. 338
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