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2 Display messages Possible cause/consequence Possible solution
Check brake
fluid level
G
Risk of accident
There is insufficient brake fluid in the
brake fluid reservoir. In addition, the
3 warning lamp in the instrument clus-
ter lights up and a warning tone sounds. X
Pull over as soon as it is safe to do so.
X Do not continue driving under any circumstan-
ces .
X Consult the nearest qualified specialist work -
shop.
X Do not top up the brake fluid. This will not rec -
tify the malfunction. P
Shift to
P P
Shift to
P You have switched off the engine with the
KEYLESS GO* button and opened the driv-
er's door.
You have attempted to lock the vehicle. X
Move the selector lever to P.
The engine can be started again. To start
engine, shift
to either P or
N To start engine,
shift to either
P
or N You have attempted to start the engin
e
while the selector lever is not in position
P or N. X
Move the selector lever to Por N. Clean the fuel
filter X
Visit a qualified specialist workshop. Practical advice
* optional
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3 Display messages Possible cause/consequence Possible solution
Top up coolan
t The coolant level is too low. X
Top up the coolant, observing the warning
notes (Y page 209).
X Have the coolant system checked at a qualified
specialist workshop if the coolant needs top-
ping up more often than usual .Switch off
lights or
remove key The light switch has been set to the
*
position or the daytime driving lights
are switched on and you have not
removed the key. The parking lamps
remain switched on. In addition, a warning
tone sounds. X
Remove the key from the ignition lock.
or
X Set the light switch to the Mposition . Check tyres Tyre pressure
Check tyres The tyre pressure loss warning system has
detected a significant pressure loss.
A
warning tone also sounds. X
Stop the vehicle without making any sudden
steering or braking manoeuvres. Pay attention
to the traffic conditions as you do so.
X Check the tyres.
X Check the tyre pressure and correct it if nec-
essary (Y page 213).
X Repair or change the faulty wheel as necessar y
( Y page 313).
X Then restart the tyre pressure loss warning
system once the tyre pressure is correc t
( Y page 214). Practical advice
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4 Display messages Possible cause/consequence Possible solution
Run Flat Indi-
cator inopera-
tiv
e Run Flat Indicator
inoperative The tyre pressure loss warning system is
deactivated due to a malfunction. X
Have the tyre pressure loss warning system
checked at a qualified specialist workshop .Check tyres
Restart system Check tyre pres-
sures then restart
Run Flat Indicator There was a tyre pressure warning mes-
sage. X
Make sure that the pressure is correct for all
tyres (Y page 213).
X Then restart the tyre pressure loss warning
system (Y page 214). Key not detec-
ted
The KEYLESS GO* key cannot be detected
while the engine is running because it is
either not in the vehicle or because ther
e
is strong radio interference. In addition, a
warning tone sounds.
Once the engine has been switched off ,
you will no longer be able to lock the vehi-
cle centrally or start the engine. X
Stop the vehicle as soon as the traffic condi -
tions permit.
X Locate the KEYLESS GO* key or operate the
vehicle using the key in the ignition lock. Key not detec-
ted
The KEYLESS GO* key cannot be detec-
ted. X
Change the location of the KEYLESS GO key*
within the vehicle .
X Operate the vehicle using the key in the ignition
lock if necessary. Key does not
belong to vehi-
cle You have put the wrong key in the ignition
lock. X
Use the correct key. Practical advice
* optional
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5 Display messages Possible cause/consequence Possible solution
Close doors to
lock vehicl
e Not all doors were closed as you attemp-
ted to lock the vehicle. A warning tone
also sounds. X
Close all doors and lock the vehicle again .Rear left seat
backr. not
locked
or
Rear right seat
backr. not
locked The right-hand or left-hand rear seat back-
rest is not engaged. In addition, a warning
tone sounds. X
Fully engage the rear seat backrest
(Y page 186). PRE-SAFE inop-
erativ
e PRE-SAFE inopera-
tive See Owner's
Manual
Important functions of PRE-SAFE
®
* have
failed. All other occupant safety systems,
e.g. airbags, remain available. X
Visit a qualified specialist workshop. Child seat
position Child seat in wrong
position See Own-
er's Manual Vehicles with automatic child seat recog-
nition in the front-passenger seat*: the
child seat is not positioned correctly. X
Position the child seat correctly. Child seat
position Child seat in wrong
position See Own-
er's Manual Vehicles with automatic child seat recog-
nition in the front-passenger seat*: the
child seat recognition sensor is faulty. X
Have the sensor checked at a qualified spe -
cialist workshop. Practical advic
e
* optional
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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
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Display
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7 Symbol messages
G
Risk of accident and injury
Always have maintenance work carried out at a qualified specialist workshop which has the necessary specialist knowledge and tools to
carry out the work required .
Mercedes-Benz recommends that you use a Mercedes-Benz Service Centre for this purpose.
In particular, work relevant to safety or on safety-related systems must be carried out at a qualified specialist workshop. The operating
safety of the vehicle can be affected if this work is carried out incorrectly. There is a risk of accident and injury. Display messages Possible cause/consequence Possible solution
120 km/h Maximum speed
exceeded
Only for certain coun-
tries You have exceeded the speed limit. X
Drive more slowly . Ê The boot lid is open. X
Close the boot lid. Y G
Risk of accident
Vehicles with an anti-theft alarm sys-
tem*: you are driving with the bonne t
open. X
Stop immediately and safely when traffic con-
ditions allow.
X Close the bonnet. V At least one door is open. The displa
y
symbol shows you which doors are open.
A warning tone also sounds. X
Close the doors. Practical advice
* optional
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7 Z
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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
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