Problem Possible causes/consequences and
0003 Solutions
000A
The yellow
engine diagnos-
tics warning
lamp lights up
while the engine
is running. The
smoothness of
the gear change
is restricted. The sub geartrain with the odd gears has failed. The transmission
is in emergency mode.
X
Have the vehicle checked as soon as possible at a qualified
specialist workshop. 000D
The yellow tyre
pressure moni-
tor warning lamp
is on. G
Risk of accident
The tyre pressure monitor has detected a sudden or significant
pressure loss in at least one of the tyres.
X Stop the vehicle without making any sudden steering or braking
manoeuvres. Pay attention to the traffic conditions as you do
so.
X Observe the additional messages in the multifunction display
(Y page 289).
The warning light will go out after the flat tyre has been changed
and you have been driving for a few minutes. 0019
The red seat belt
warning lamp
lights up for six
seconds after
the engine is
started 22
. The seat belt warning lamp reminds the driver and front passenger
to fasten their seat belts.
X
Fasten your seat belt (Y page 210).0019
After the engine
starts, a warning
tone sounds for
up to 6 sec-
onds22
. G
Risk of injury
The driver's seat belt is not fastened.
X Fasten your seat belt (Y page 210).
The warning tone ceases. 0019
The red seat belt
warning lamp
lights up after
the engine
starts, as soon
as the driver's
door or the
front-passenger
door is closed. G
Risk of injury
The driver or front passenger has not fastened their seat belt.
X Fasten your seat belt (Y page 210).
The warning lamp goes out. 22
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Problem Possible causes/consequences and
0003 Solutions
G
Risk of injury
There are objects on the front-passenger seat.
X Remove the objects from the front-passenger seat and stow
them in a secure place.
The warning lamp goes out. 0019
The red seat belt
warning lamp
flashes and an
intermittent
audible warning
sounds. G
Risk of injury
The driver or front passenger has not fastened their seat belt. At
the same time, you are driving faster than 25 km/ho rhave briefly
driven faster than 25 km/h.
X Faste nyour seat belt (Y page 210).
The warning lamp goes out and the intermittent audible warning
ceases. G
Risk of injury
There are objects on the front-passenger seat. At the same time,
you are driving faster than 25 km/h or have briefly driven faster
than 25 km/h.
X Remove the objects from the front-passenger seat and stow
them in a secure place.
The warning lamp goes out and the intermittent audible warning
ceases. The yellow reserve fuel
warning lamp lights up
while the engine is run-
ning. The fuel level has fallen below the reserve range.
X
Refuel at the nearest filling station. Warning tones
Problem Possible causes/consequences and
0003 Solutions
The anti-theft warning
alarm is triggered. You have opened the vehicle with the anti-theft alarm system still
activated.
X
Switch off the alarm (Y page 49).You hear a warning
tone. Am
essage appears in the multifunction display.
X See the explanations for the display messages ( Ypage 289). 22
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Problem Possible causes/consequences and
0003 Solutions
You are driving with the electric parking brake engaged.
X
Release the electric parking brake. G
Risk of injury
The driver or front passenger has not fastened their seat belt.
X Fasten your seat belt (Y page 210).Accident
Problem Possible causes/consequences and
0003 Solutions
Fuel is leaking from the
vehicle.
G
Risk of fire
The fuel line or the fuel tank has been damaged. The leaking fuel
creates a risk of fire or explosion.
X Switch off the ignition immediately.
X Remove the key.
Do not restart the engine under any circumstances. The leaking
fuel creates a risk of fire or explosion.
X Consult a qualified specialist workshop. You are unable to
determine the extentof
the damage.
X
Consult a qualified specialis tworkshop. You cannot detect any
damage.
X
Start the engine as normal. Troubleshooting
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Fuel and fuel tank
Problem Possible causes/consequences and
0003 Solutions
Fuel is leaking from the
vehicle.
G
Ris
kofe xplosion or fire
The fuel line or the fuel tank is defective.
X Set the Start/Stop button to key position 0immediately
(Y page 202).
X Do not restart the engine under any circumstances.
X Consult a qualified specialist workshop. The fuel filler flap can-
not be opened. The fuel filler flap is not released.
or:
The key batteries are discharged.
X
Unlock the vehicle (Y page 322).
or:
X Unlock the vehicle using the emergency key element
(Y page 321). The fuel filler flap is released, but the opening mechanism is jam-
med.
X
Consult a qualified specialist workshop. 314
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Engine
Problem Possible causes/consequences and
0003 Solutions
The engine will not
start. You can hear the
starter motor operat-
ing. R
There is a malfunctio ninthe 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 attempting to start the vehicle again, press the Start/
Stop button repeatedly (Y page 202) until all indicator lamps in
the instrument cluster have gone off.
X Try to start the engine again (Y page 220). 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 338).
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-
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Problem Possible causes/consequences and
0003 Solutions
The coolant tempera-
ture gauges shows a
value above 120 †. A
display message may
also appeara
nd a warn-
ing tone may sound. The coolant level is too low. The coolant is too hot and the engine
is no longe
rbeing 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 269). 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 below 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. PARKTRONIC
Problem Possible causes/consequences and
0003 Solutions
Only the red segments
in the PARKTRONIC
warning display are lit.
You also hear a warning
tone for approximately
two seconds.
PARKTRONIC is deacti-
vated after approx-
imately 20 seconds and
the indicator lamp in
the PARKTRONIC but-
ton lights up. PARKTRONIC has malfunctioned and has switched itself off.
X
If problems persist, have PARKTRONIC checked at a qualified
specialist workshop. Only the red segments
in the PARKTRONIC
warning display are lit.
PARKTRONIC is deacti-
vated after approx-
imately 20 seconds. The PARKTRONIC sensors are dirty or there is interference.
X
Clean the PARKTRONIC sensors (Y page 284).
X Switch the ignition back on. The problem may be caused by an external source of radio or
ultrasound waves.
X
See if PARKTRONIC functions in a different location. 316
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Problem Possible causes/consequences and
0003 Solutions
You have lost a key.
X
Have the key cancelled at a Mercedes-Benz Service Centre.
X Report the loss immediately to the vehicle insurers.
X If necessary, have the locks changed as well. You have lost the emer-
gency key element.
X
Report the loss immediately to the vehicle insurers.
X If necessary, have the locks changed as well. The engine cannot be
started using KEYLESS-
GO. The key is in the
vehicle. Ad
oor is open. Therefore, the key cannot be detected as easily.
X Close the door and try to start the vehicle again. There is interference from a powerful source of radio waves.
X
Start your vehicle with the key in the ignition lock. The engine cannot be
started using the key. The on-board voltage is too low.
X
Switch off non-essential consumers, e.g. seat heating or interior
lighting, and try to start the engine again.
X Remove the key and reinsert it into the ignition lock.
X Start the engine within 30 seconds of inserting the key in the
ignition lock.
X Repeat if necessary.
If this does not work:
X Check the starter battery and charge it if necessary
(Y page 334).
or
X Jump-start the vehicle (Y page 338).
or
X Consult a qualified specialist workshop. 320
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Problem Possible causes/consequences and
0003 Solutions
The key cannot be
turned in the ignition
lock. The key has been in position
0for a considerable time.
X Remove the key and reinsert it into the ignition lock.
X Check the starter battery and charge it if necessary
(Y page 334).
X Start the engine. The on-board voltage is too low.
X
Switch off non-essential consumers, e.g. seat heating or interior
lighting, and try to turn the key again.
If this does not work:
X Check the starter battery and charge it if necessary
(Y page 334).
or
X Jump-start the vehicle (Y page 338).
or
X Consult a qualified specialist workshop. Parking up the vehicle
Problem Possible causes/consequences and
0003 Solutions
The vehicle is to be left
parked up for longer
than six weeks. Damage resulting from non-use may occur if the vehicle is parked
up for long periods.
X
Visit a qualified specialist workshop and seek advice.
X Disconnect the battery (Y page 336).Locking/unlocking in an emergency
Emergency key element
If the vehicle can no longer be locked or
unlocked with the key, use the emergency
key element.
If you use the emergency key element to
unlock and open the driver's door, the anti-
theft alarm system will be triggered
(Y page 49).
There are several ways to turn off the alarm:
X Press the 000Bor0009 button on the key.
or
X Insert the key into the ignition lock. If you unlock the vehicle using the emergency
key element, the fuel filler flap will not be
unlocked automatically.
X
To unlock the fuel filler flap: insert the
key in the ignition lock. Locking/unlocking in an emergency
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