Page 618 of 723
615 Practical hints
What to do if …?
Display Possible cause/consequencePossible solution
Close doors
to lock themYou wanted to lock the vehicle but the
doors were not closed.Close doors and lock vehicle again.
Do not
forget keyThis display appears (for a maximum of
60 seconds) if the driver’s door is opened
with the engine turned off and no SmartKey
in the starter switch.
This message is only a reminder.Take the SmartKey or SmartKey with
KEYLESS-GO* with you when leaving the
vehicle.
Please
remove keyYou have forgotten to remove the
SmartKey.Remove the SmartKey from the starter
switch.
Change
key batteriesThe batteries in the SmartKey with
KEYLESS-GO* are discharged.Replace the batteries (page 639).
Key
still in vehicleA SmartKey with KEYLESS-GO* left in the
vehicle was recognized while locking the ve-
hicle from the outside.Take the SmartKey with KEYLESS-GO* out of
the vehicle.
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Page 619 of 723
616 Practical hints
What to do if …?
Display Possible cause/consequencePossible solution
Key
not recognizedThe SmartKey with KEYLESS-GO* is
momentarily not recognized.Change the position of the SmartKey with
KEYLESS-GO* in the vehicle.
If necessary, operate vehicle using SmartKey
with KEYLESS-GO* in starter switch under
KEYLESS-GO* button (
page 337).
Key being
initialized…
Please waitThe SmartKey with KEYLESS-GO* is being
initialized in the vehicle.Wait until the message disappears from the
multifunction display.
Remove starting
button, then
insert keyThe KEYLESS-GO* system is
malfunctioning.Remove KEYLESS-GO* button from the
starter switch (
page 337).
Operate the vehicle with the SmartKey with
KEYLESS-GO* in the starter switch.
Replace keyThe SmartKey with KEYLESS-GO* must be
replaced.Contact an authorized Mercedes-Benz
Center as soon as possible.
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Page 620 of 723

617 Practical hints
What to do if …?
Display Possible cause/consequencePossible solution
Third brake lampThe high mounted brake lamp is malfunc-
tioning. This message will only appear if all
light emitting diodes have stopped working.Contact an authorized Mercedes-Benz
Center as soon as possible.
Corner. lamp,
LeftThe left-hand corner-illuminating lamp is
malfunctioning.Replace the bulb as soon as possible
(
page 641).
Corner. lamp,
RightThe right-hand corner-illuminating lamp is
malfunctioning.Replace the bulb as soon as possible
(
page 641).
Low beam,
LeftThe left low beam lamp is malfunctioning.Contact an authorized Mercedes-Benz
Center as soon as possible.
Low beam,
RightThe right low beam lamp is malfunctioning.Contact an authorized Mercedes-Benz
Center as soon as possible.
Active headlamps
inoperativeThe active headlamps are malfunctioning.Contact an authorized Mercedes-Benz
Center as soon as possible.
AUTO lamps
inoperativeThe light sensor is malfunctioning. Daytime
driving lamps are switched on.Contact an authorized Mercedes-Benz
Center as soon as possible.
To switch off the headlamps (U.S. vehicles only):
In the instrument cluster control system, set
lamp operation to manual mode
(
page 271).
Switch off the headlamps using the exterior
lamp switch (
page 363).
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Page 621 of 723

618 Practical hints
What to do if …?
Display Possible cause/consequencePossible solution
Turn signal,
Rear LeftT h e l e f t r e a r t u r n s i g n a l l a m p i s m a l f u n c t i o n -
ing. A substitute bulb is being used.Contact an authorized Mercedes-Benz
Center as soon as possible.
Turn signal,
Rear RightThe right rear turn signal lamp is malfunc-
tioning. A substitute bulb is being used.Contact an authorized Mercedes-Benz
Center as soon as possible.
Turn signal,
Left mirrorThe turn signal in the left exterior rear view
mirror is malfunctioning. This message will
only appear if all light emitting diodes have
stopped working.Have the LEDs replaced as soon as possible.
Turn signal,
Right mirrorThe turn signal in the right exterior rear view
mirror is malfunctioning. This message will
only appear if all light emitting diodes have
stopped working.Have the LEDs replaced as soon as possible.
Turn signal,
Front LeftThe left front turn signal lamp is malfunc-
tioning.Contact an authorized Mercedes-Benz
Center as soon as possible.
Turn signal,
Front RightThe right front turn signal lamp is malfunc-
tioning.Contact an authorized Mercedes-Benz
Center as soon as possible.
High beam, LeftThe left high beam lamp is malfunctioning.Replace the bulb as soon as possible
(
page 641).
High beam, RightThe right high beam lamp is malfunctioning.Replace the bulb as soon as possible
(
page 641).
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Page 622 of 723

619 Practical hints
What to do if …?
Display Possible cause/consequencePossible solution
License plate lamp,
LeftThe left license plate lamp is malfunction-
ing.Contact an authorized Mercedes-Benz
Center as soon as possible.
License plate lamp,
RightThe right license plate lamp is malfunction-
ing.Contact an authorized Mercedes-Benz
Center as soon as possible.
Please
switch off lightsYou are getting out of the vehicle and the
lights are still switched on.Switch off the headlamps (page 363).
Switch off lights
or
remove keyThe exterior lamp switch is set to * and
you have forgotten to take out the Smart-
Key. The parking lamps remain switched on.Switch off the headlamps (page 363).
or
Remove the SmartKey from the starter
switch.
Front foglamp,
LeftThe left front fog lamp is malfunctioning.Contact an authorized Mercedes-Benz
Center as soon as possible.
Front foglamp,
RightThe right front fog lamp is malfunctioning.Contact an authorized Mercedes-Benz
Center as soon as possible.
Rear foglamp,
LeftThe left rear fog lamp is malfunctioning. A
substitute bulb is being used.Contact an authorized Mercedes-Benz
Center as soon as possible.
Rear foglamp,
RightThe right rear fog lamp is malfunctioning. A
substitute bulb is being used.Contact an authorized Mercedes-Benz
Center as soon as possible.
ProCarManuals.com
Page 623 of 723

620 Practical hints
What to do if …?
Display Possible cause/consequencePossible solution
Parking lamp,
Front LeftThe left front parking lamp is malfunction-
ing. A substitute bulb is being used.Contact an authorized Mercedes-Benz
Center as soon as possible.
Parking lamp,
Right frontThe right front parking lamp is malfunction-
ing. A substitute bulb is being used.Contact an authorized Mercedes-Benz
Center as soon as possible.
Reverse lamp,
LeftThe left reverse lamp is malfunctioning.Contact an authorized Mercedes-Benz
Center as soon as possible.
Reverse lamp,
RightThe right reverse lamp is malfunctioning.Contact an authorized Mercedes-Benz
Center as soon as possible.
Side marker lamp,
Left FrontThe front left side marker lamp is malfunc-
tioning.Contact an authorized Mercedes-Benz
Center as soon as possible.
Side marker lamp,
Rear LeftThe rear left side marker lamp is malfunc-
tioning.Contact an authorized Mercedes-Benz
Center as soon as possible.
Side marker lamp,
Rear RightThe rear right side marker lamp is malfunc-
tioning.Contact an authorized Mercedes-Benz
Center as soon as possible.
Side marker lamp,
Right FrontThe front right side marker lamp is malfunc-
tioning.Contact an authorized Mercedes-Benz
Center as soon as possible.
ProCarManuals.com
Page 624 of 723
621 Practical hints
What to do if …?
Display Possible cause/consequencePossible solution
Tail lamp/
brake lamp, LeftThe left tail lamp/brake lamp is malfunc-
tioning.
This message will only appear if all light
emitting diodes have stopped working. A
substitute bulb is being used.Contact an authorized Mercedes-Benz
Center as soon as possible.
Tail lamp/
brake lamp, RightThe right tail lamp/brake lamp is malfunc-
tioning.
This message will only appear if all light
emitting diodes have stopped working. A
substitute bulb is being used.Contact an authorized Mercedes-Benz
Center as soon as possible.
ProCarManuals.com
Page 625 of 723
622 Practical hints
What to do if …?
Display Possible cause/consequencePossible solution
Night View Assist
inoperativeNight View Assist* is malfunctioning.Contact an authorized Mercedes-Benz
Center as soon as possible.
Night View Assist
currently unavailableThe temperature of the camera* is too high
(
page 446).
Wait until the message “Night View Assist
available again” appears.
In addition you can:
Swing the camera* cover down
(
page 561).
Adjust the air distribution of the automatic
climate control so that air flows upward
(
page 246).
Night View Assist
Lights must be set
to AUTO or ONYou have tried to switch on Night View
Assist*, but the light switch is not set
to* or B.Turn the exterior lamp switch
to*orB (
page 363).
Night View Assist
Not in Reverse gearYou have tried to switch on Night View
Assist* while the automatic transmission
was in position R.Shift the automatic transmission to P, N or D
(
page 389).
ProCarManuals.com