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
Display
messagesPractical advice
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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. Other
systems, e.g. BAS (Brake Assist), BAS PLUS* (Brake Assist Plus),
ESP ®
(Electronic Stability Program), EBV (electronic brake-force
distribution), PRE-SAFE ®
, PRE-SAFE ®
Brake*, HOLD, hill start
assist, the adaptive brake lights and ESP ®
trailer stabilisation, are
also deactivated.
The brake system continues to function normally, but without the
functions listed above. Therefore, the wheels could lock if you
brake hard.
X Observe the additional messages in the multi-function display
(Y page 316).
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. G
Risk of accident
Distronic* or 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. Troubleshooting
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Engine
Problem
Possible causes/consequences and
X XSolutions The engine will not
start. You can hear the
starter motor operat-
ing. R
There is a malfunction in the engine electronics.
R There is a malfunction in the fuel supply.
R The on-board voltage is too low because the starter battery is
too weak or discharged.
X Before the next start attempt, turn the key back to position 0
(Y page 182) in the ignition lock or press the Start/Stop but-
ton* until all the indicator lights in the instrument cluster have
gone out.
X Try to start the engine again (Y page 202). When doing so,
remember that excessively long and frequent attempts to start
the engine will drain the battery.
If the engine does not start after several attempts:
X Consult a qualified specialist workshop. The engine will not
start. You cannot hear
the starter motor. The on-board voltage is too low because the starter battery is too
weak or discharged.
X
Jump-start the vehicle (Y page 384).
If the engine does not start despite attempting to jump-start it:
X Consult a qualified specialist workshop. The starter motor was exposed to a thermal load that was too high.
X
Allow the starter motor to cool down for approximately two
minutes.
X Try to start the engine again.
If the engine still does not start:
X Consult a qualified specialist workshop. The engine is not run-
ning smoothly and is
misfiring. There is a malfunction in the engine electronics or a mechanical
component of the engine control unit.
X
Only depress the accelerator pedal slightly.
X Have the cause rectified immediately at a qualified specialist
workshop.
Otherwise, non-combusted fuel may get into the catalytic con-
verter and damage it. 358
TroubleshootingPractical advice
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Problem
Possible causes/consequences and
X
X Solutions The coolant tempera-
ture gauge shows a
value above 120 †.
The coolant warning
lamp may also light up
and a warning tone may
sound (Y
page 212). The coolant level is too low. The coolant is too hot and the engine
is no longer being cooled sufficiently.
X
Stop as soon as possible and allow the engine and the coolant
to cool down.
X Check the coolant level (Y page 294). Observe the warning
notes as you do so and top up the coolant if necessary. If the coolant level is correct, the radiator fan may be faulty. The
coolant is too hot and the engine is no longer being cooled suffi-
ciently.
X
If the coolant temperature is less than 120 †, you can continue
driving to the nearest qualified specialist workshop.
X Avoid heavy loads on the engine as you do so, e.g. driving on
mountain roads and stop/start driving. Automatic transmission
Problem
Possible causes/consequences and
X
X Solutions The transmission has
problems shifting gear. The transmission is losing oil.
X
Have the transmission checked at a qualified specialist work-
shop immediately. The acceleration ability
is deteriorating.
The transmission no
longer changes gear. The transmission is in emergency mode.
It is only possible to shift into
secondgear and reverse gear.
X Stop the vehicle.
X Turn the key in the ignition to position 0(Y page 182) or press
the Start/Stop button* repeatedly until all indicator lamps in
the instrument cluster go out.
X Wait at least 10 seconds before restarting the engine.
X Have the transmission checked at a qualified specialist work-
shop immediately. Troubleshooting
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Wear eye protection.
Keep children away.
Observe this Owner's Man-
ual.
H
Environmental note
Do not dispose of batteries in the household
rubbish. Dispose of defective batteries in an
environmentally responsible manner. Take
them to a Mercedes-Benz Service Centre or
to a special collection point for old batteries. G
Risk of injury
For safety reasons, Mercedes-Benz recom-
mends that you only use batteries which have
been tested and approved for your vehicle by
Mercedes-Benz. These batteries provide
increased impact protection to prevent vehi-
cle occupants from suffering acid burns
should the battery be damaged in the event
of an accident.
To prevent acid burns, observe the following
safety notes when handling batteries:
R do not lean over the battery.
R do not place any metal objects on a battery.
You could otherwise cause a short circuit
and the battery's gas mixture could ignite.
R make sure that you do not create an elec-
trostatic charge, e.g. by wearing synthetic
clothing or as a result of friction on fabrics.
Therefore, you should not pull or slide the
battery over carpets or other synthetic
materials. R
never touch the battery first. To discharge
a possible electrostatic charge, step out of
the vehicle first and touch the bodywork.
R do not wipe the battery using a cloth. The
battery may explode as a result of electro-
static charge or due to flying sparks.
! Before loosening the terminal clamps of
the battery, switch off the engine and
remove the key or, on vehicles with KEY-
LESS GO*, make sure that the ignition is
not switched on. In the instrument cluster,
all of the indicator lamps must be out. Oth-
erwise, you may destroy electronic compo-
nents, such as the alternator.
i Mercedes-Benz recommends that you
have work involving the battery, e.g.
removal, charging and replacement, car-
ried out at a qualified specialist workshop,
e.g. a Mercedes-Benz Service Centre.
Installation location of the battery Your vehicle is equipped with a battery in the
engine compartment. It is located on the front
bulkhead under the filter box on the right-
hand side of the vehicle when viewed in the
direction of travel.
Example
:
Negative terminal
; Positive terminal
i Remove the key if you park the vehicle
and do not require any electrical consum- Battery
383Practical advice
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