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Display
messages 24
1 Display messages Possible cause/consequence Possible solution
ESP inoperative ESP currently
unavail. See Own
-
er's Manual ESP
®
, BAS, PRE–SAFE ®
*, hill start assist
and ESP ®
trailer stabilisation are unavail -
able due to undervoltage. It is possible
that the battery is not being charged. The
v warning lamp also lights up in th e
instrument cluster. The brake system con -
tinues to function normally, but without
the functions listed above . X
Drive on carefully.
X Visit a qualified specialist workshop. ESP inoperative ESP currently
unavail. See Own-
er's Manual If this display message appears and the
v
warning lamp flashes at the same
time, this means that ETS has been deac-
tivated to prevent the brakes on the driv e
wheels from overheating . ETS switches on again as soon as the brakes have
cooled down. The display message disappears
and the
vwarning lamp goes out. Trailer hitch
Check loc
k
mech. The trailer tow hitch* is not correctly
engaged. A warning tone also sounds. X
Stop the vehicle. Pay attention to the traffic
conditions as you do so.
X Allow the ball coupling to engage in the end
position (Y page 220). Practical advice
* optional
204_AKB; 2; 3, en-GB
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Display
messages 24
6 Display messages Possible cause/consequence Possible solution
Left windowbag
malfunc-
tion:wksh
p
or
Right windowbag
malfunc-
tion:wkshp The left-hand or right-hand windowbag is
faulty. The
=warning lamp also light s
up in the instrument cluster. X
Visit a qualified specialist workshop. Cruise ctrl.
/
LIM inoperative Cr. control and
SPEEDTRONIC inop-
erative
Cruise control* and Speedtronic* are
inoperative. A warning tone also sounds. X
Have Speedtronic* and cruise control*
checked at a qualified specialist workshop .Cruise control
- - - km/h Cruise control
- - - km/h
A condition for activating cruise control*
has not been met. You have tried to store
a speed below 30 km/h, for example.
A
warning tone also sounds. X
If conditions permit, drive faster than
30 km/h and store the speed.
X Check the conditions for activating cruise con-
trol*:
R
ESP ®
must be activated .
R The parking brake must be released.
R In vehicles with automatic transmission*,
the selector lever must be in position D. Practical advice
* optional
204_AKB; 2; 3, en-GB
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Display
messages 24
8 Display messages Possible cause/consequence Possible solution
- ABS and ESP cur-
rently unavailable
See Owner's Manual
G
Risk of accident
ABS, ESP ®
, BAS, PRE–SAFE ®
*, hill start
assist and ESP ®
trailer stabilisation ar e
temporarily unavailable. It is possible tha t
the self diagnosis is not yet complete. Th e
v warning lamp also lights up in th e
instrument cluster.
The brake system continues to function
normally, but without the functions listed
above. X
Drive a short distance with gentle bends at a
speed above 20 km/h.
The display message disappears when ABS,
ESP ®
, BAS, PRE–SAFE ®
*, hill start assist and
ESP ®
trailer stabilisation are available again. - ABS and ESP cur-
rently unavailable
See Owner's Manual
G
Risk of accident
ABS, ESP ®
, BAS, PRE–SAFE ®
*, hill start
assist and ESP ®
trailer stabilisation ar e
unavailable due to undervoltage. The
v warning lamp also lights up in th e
instrument cluster.
The brake system continues to function
normally, but without the functions listed
above. X
Drive on carefully.
X Visit a qualified specialist workshop. Practical advice
* optional
204_AKB; 2; 3, en-GB
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Display
messages 24
9 Display messages Possible cause/consequence Possible solution
- ABS and ESP inoper-
ative See Owner's
Manual
G
Risk of accident
ABS, ESP ®
, BAS, PRE–SAFE ®
*, hill start
assist and ESP ®
trailer stabilisation ar e
unavailable due to a malfunction. The
v warning lamp also lights up in th e
instrument cluster.
The brake system continues to function
normally, but without the functions listed
above. X
Drive on carefully.
X Visit a qualified specialist workshop. \ Trailer tow hitch
Check lock mecha-
nism
The trailer tow hitch* is not correctly
engaged. A warning tone also sounds. X
Stop the vehicle. Pay attention to the traffic
conditions as you do so.
X Allow the ball coupling to engage in the end
position (Y page 220). # The battery is not being charged. Possible
causes:
R
faulty alternator
R torn poly-V-bel t
R malfunction in the electronics X
Stop immediately and safely when traffic con-
ditions allow and check the poly-V-belt.
X If it has torn: do not drive on. Contact th e
nearest qualified specialist workshop .
X If it is not damaged :have the vehicle checked
as soon as possible at a qualified specialist
workshop. Practical advice
* optional
204_AKB; 2; 3, en-GB
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Display
messages 25
1 Display messages Possible cause/consequence Possible solution
3 EBV, ABS, ESP inop-
erative See Own-
er's Manual
G
Risk of accident
EBV, ABS, ESP ®
, BAS, PRE–SAFE ®
*, hill
start assist and ESP ®
trailer stabilisatio n
are unavailable due to a malfunction. In
addition, the vwarning lamp in th e
instrument cluster lights up and a warnin g
tone sounds.
The brake system continues to functio n
normally, but without the functions listed
above . X
Drive on carefully.
X Visit a qualified specialist workshop immedi-
ately. ñ Clean the fuel fil-
ter X
Visit a qualified specialist workshop. D 4-button multi-function
steering wheel:
Stop vehicl
e
Engine off
12-button luxury multi-
function steering
wheel:
Coolant Stop vehi-
cle Switch engine
off The coolant is too hot. In addition, the
D
warning lamp in the instrument clus-
ter lights up and a warning tone sounds. X
Stop the vehicle. Pay attention to the traffic
conditions as you do so.
X Switch off the engine.
X Wait until the display message disappears
before restarting the engine. There is other-
wise a risk of engine damage.
X Observe the coolant temperature gauge.
X If the temperature increases again, visit a quali-
fied specialist workshop immediately. Practical advice
* optional
204_AKB; 2; 3, en-GB
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Troubleshooting
27
9 Indicator and warning lamps in the instrument cluster
Problem Possible cause/consequence Suggested solutions
-
The yellow ABS warning
lamp lights up while the
engine is running. G
Risk of accident
ABS, ESP ®
, BAS, PRE–SAFE ®
*,
hill start assist and ESP ®
trailer
stabilisation are unavailable du e
to a malfunction.
The brake system continues to
function normally, but without
the functions listed above. Th e
wheels could therefore lock if you
brake hard, for example. X
Drive on carefully.
X Observe the additional messages in the multi-function display
(Y page 236).
X Visit a qualified specialist workshop as soon as possible. v
The yellow ESP ®
warning
lamp lights up while th e
engine is running. G
Risk of accident
ESP ®
is deactivated. ES P®
will
not stabilise the vehicle if it start s
to skid or if a wheel starts to spin. X
Reactivate ES P®
(Y page 68).
Exceptions (Y page 68).
X Adapt your driving style to suit the road and weather conditions. G
Risk of accident
ESP ®
is not available due to a
malfunction. ESP ®
will not stabi-
lise the vehicle if it starts to skid
or if a wheel starts to spin . X
Observe the additional messages in the multi-function display
(Y page 236).
X Drive on carefully.
X Visit a qualified specialist workshop. Practical advice
* optional
204_AKB; 2; 3, en-GB
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Troubleshooting
28
0 Problem Possible cause/consequence Suggested solutions
v
The yellow ESP ®
warning
lamp flashes while th e
vehicle is in motion. G
Risk of accident
ESP ®
or traction control has
intervened because at least one
wheel has started to spin.
Cruise control* is switched off. 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 ®
.
Exceptions (Y page 68). G
Risk of accident
At least one tyre is spinning and
ETS is deactivated to prevent the
brakes on the drive wheels from
overheating. X
Observe the additional messages in the multi-function display
(Y page 236).
ETS switches back on again as soon as the brakes have cooled down.
The display message disappears and the vwarning lamp goes
out. 3
The red brake system
warning lamp lights up
while you are driving. You
will also hear a warning
tone. You are driving with the parking
brake on. X
Release the parking brake (Y page 116).
The warning lamp goes out and the warning tone ceases. Practical advice
* optional
204_AKB; 2; 3, en-GB
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Troubleshooting
29
0 Engine
Problem Possible cause/consequence Suggested solutions
The engine will not start. You can
hear the starter motor operating. R
There may be a malfunction in
the engine electronics.
R There may be a malfunction in
the fuel supply. X
Turn the key back to position 0in the ignition lock before the nex t
starting attempt.
X Try to start the engine again (Y page 113). When doing so, remem-
ber that excessively long and frequent attempts to start the engin e
will drain the battery.
If the engine does not start after several attempts:
X Consult a qualified specialist workshop. Vehicles with a diesel engine:
The engine will not start. You can
hear the starter motor operating
.
The reserve fuel warning lamp is
on and the fuel gauge shows 0. The fuel tank has been run dry. X
Refuel the vehicle.
X Bleed the fuel system (Y page 289). The engine will not start. You can-
not hear the starter motor oper-
ating. The on-board voltage is too low
because the starter battery is too
weak or discharged. X
Jump-start the vehicle (Y page 328).
If the engine does not start despite attempting to jump-start it:
X Consult a qualified specialist workshop. Practical advice
204_AKB; 2; 3, en-GB
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0