MERCEDES-BENZ S550 2007 W221 Owner's Manual

590 Practical hintsWhat to do if …?Display
Possible cause/consequence
Possible solution
Coolant level
Stop vehicle!
Switch engine off

Restart the engine.
If this message disappears from the multi-
function display:
Drive immediately to the nearest autho-
rized Mercedes-Benz Center.
If this message does not disappear from the
multifunction display:

Call Roadside Assistance.
The cooling fan for the coolant is malfunc-
tioning.

Observe the coolant temperature gauge in
the instrument cluster (
page 28).

Have the fan replaced as soon as possible.
You are driving with one or more doors
open.
The display symbol shows you which doors
are open.

Close the doors.

591 Practical hints
What to do if …?
Display
Possible cause/consequence
Possible solution
Gas cap open
A loss of pressure has been detected in the
fuel system. The fuel cap may not be closed
properly or the fuel system may be leaky.

Check the fuel cap (
page 489).
If it is not closed properly:

Close the fuel cap.
If it is closed properly:

Have the fuel system checked by an autho-
rized Mercedes-Benz Center.
You are driving with the hood open.

Stop your vehicle as soon as it is safe to do
so.

Close the hood (
page 493).
There is otherwise danger of an accident.

592 Practical hintsWhat to do if …?Display
Possible cause/consequence
Possible solution
Key
not recognized
The SmartKey with KEYLESS-GO* is not
recognized while the engine is running be-
cause the SmartKey with KEYLESS-GO* is
not in the vehicle.

Stop the vehicle in a safe location as soon as
it is safe to do so.

Search for the SmartKey.
Otherwise the vehicle cannot be centrally
locked nor can the engine be started again
after the engine is stopped.
The SmartKey with KEYLESS-GO* is not
recognized while the engine is running be-
cause there is strong radio-frequency inter-
ference.

Stop the vehicle in a safe location as soon as
it is safe to do so.

Remove KEYLESS-GO* button from over
starter switch (
page 316).

Operate the vehicle with the SmartKey in the
starter switch.
The SmartKey with KEYLESS-GO* is mo-
mentarily not recognized.

Change the position of the SmartKey in the
vehicle.

If necessary, operate vehicle using SmartKey
with KEYLESS-GO* in starter switch under
KEYLESS-GO* button (
page 316).

593 Practical hints
What to do if …?
Display
Possible cause/consequence
Possible solution
Close doors
to lock them
You wanted to lock the vehicle but not all
doors were closed.

Close doors and lock vehicle again.
Do not
forget key
This display appears (for a maximum of
60 seconds) if the driver’s door is opened
with the engine shut off and no SmartKey in
the starter switch.
This message is only a reminder.

Insert SmartKey in the starter switch.
or

Take the SmartKey with KEYLESS-GO* with
you when leaving the vehicle.
Please
remove key
You have forgotten to remove the
SmartKey.

Remove the SmartKey from the starter
switch.
Change
key batteries
The batteries in the SmartKey with
KEYLESS-GO* are discharged.

Replace the batteries (
page 619).
Key
still in vehicle
A 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.

594 Practical hintsWhat to do if …?Display
Possible cause/consequence
Possible solution
Key
not recognized
The SmartKey with KEYLESS-GO* is mo-
mentarily not recognized.

Change the position of the SmartKey in the
vehicle.

If necessary, operate vehicle using SmartKey
with KEYLESS-GO* in starter switch under
KEYLESS-GO* button (
page 316).
Key being
initialized…
Please wait
The SmartKey with KEYLESS-GO* is being
initialized in the vehicle.

Wait until the message disappears from the
multifunction display.
Remove starting
button, then
insert key
The KEYLESS-GO* system is malfunction-
ing.

Remove KEYLESS-GO* button from over
starter switch (
page 316).

Operate the vehicle with the SmartKey in the
starter switch.
Replace key
The SmartKey with KEYLESS-GO* must be
replaced.

Visit an authorized Mercedes-Benz Center as
soon as possible.

595 Practical hints
What to do if …?
Display
Possible cause/consequence
Possible solution
Third brake lamp
The high mounted brake lamp is malfunc-
tioning. This message will only appear if all
light emitting diodes have stopped working.

Visit an authorized Mercedes-Benz Center as
soon as possible.
Corner. lamp,
Left
The left-hand corner-illuminating lamp is
malfunctioning.

Replace the bulb as soon as possible
(page 621).
Corner. lamp,
Right
The right-hand corner-illuminating lamp is
malfunctioning.

Replace the bulb as soon as possible
(page 621).
Low beam,
Left
The left low beam lamp is malfunctioning.
Bi-Xenon headlamp:
Visit an authorized Mercedes-Benz Center as
soon as possible.

596 Practical hintsWhat to do if …?Display
Possible cause/consequence
Possible solution
Low beam,
Right
The right low beam lamp is malfunctioning.

Visit an authorized Mercedes-Benz Center as
soon as possible.
Active headlamps
inoperative
The active headlamps are malfunctioning.

Visit an authorized Mercedes-Benz Center as
soon as possible.
AUTO lamps
inoperative
The light sensor is malfunctioning. Daytime
driving lamps are switched on.

Visit an authorized Mercedes-Benz Center as
soon as possible.
Turn signal,
Rear Left
The left rear turn signal lamp is malfunction-
ing.

Visit an authorized Mercedes-Benz Center as
soon as possible.
Turn signal,
Rear Left
Substitute bulb on
The left rear turn signal lamp is malfunction-
ing. A substitute bulb is being used.

Visit an authorized Mercedes-Benz Center as
soon as possible.
Turn signal,
Rear Right
The right rear turn signal lamp is malfunc-
tioning.

Visit an authorized Mercedes-Benz Center as
soon as possible.
Turn signal,
Rear Right
Substitute bulb on
The right rear turn signal lamp is malfunc-
tioning. A substitute bulb is being used.

Visit an authorized Mercedes-Benz Center as
soon as possible.

597 Practical hints
What to do if …?
Display
Possible cause/consequence
Possible solution
Turn signal,
Left mirror
The 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 mirror
The 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 Left
The left front turn signal lamp is malfunc-
tioning.

Visit an authorized Mercedes-Benz Center as
soon as possible.
Turn signal,
Front Right
The right front turn signal lamp is malfunc-
tioning.

Visit an authorized Mercedes-Benz Center as
soon as possible.
High beam, Left
The left high beam lamp is malfunctioning.

Replace the bulb as soon as possible
(page 621).
High beam, Right
The right high beam lamp is malfunctioning.

Replace the bulb as soon as possible
(page 621).
License plate lamp,
Left
The left license plate lamp is malfunction-
ing.

Visit an authorized Mercedes-Benz Center as
soon as possible.
License plate lamp,
Right
The right license plate lamp is malfunction-
ing.

Visit an authorized Mercedes-Benz Center as
soon as possible.

598 Practical hintsWhat to do if …?Display
Possible cause/consequence
Possible solution
Please
switch off lights
You are getting out of the vehicle and the
lights are still switched on.

Turn the exterior lamp switch to M
(page 342).
Switch off lights
or
remove key
The light switch is set to * and you have
forgotten to take out the SmartKey. The
parking lamps remain switched on.

Turn the exterior lamp switch to M
(page 342).

Remove the SmartKey from the starter
switch.
Front foglamp,
Left
The left front fog lamp is malfunctioning.

Visit an authorized Mercedes-Benz Center as
soon as possible.
Front foglamp,
Right
The right front fog lamp is malfunctioning.

Visit an authorized Mercedes-Benz Center as
soon as possible.
Rear foglamp,
Left
The left rear fog lamp is malfunctioning.

Visit an authorized Mercedes-Benz Center as
soon as possible.
Rear foglamp,
Left
Substitute bulb on
The left rear fog lamp is malfunctioning. A
substitute bulb is being used.

Visit an authorized Mercedes-Benz Center as
soon as possible.
Rear foglamp,
Right
The right rear fog lamp is malfunctioning.

Visit an authorized Mercedes-Benz Center as
soon as possible.
Rear foglamp,
Right
Substitute bulb on
The right rear fog lamp is malfunctioning. A
substitute bulb is being used.

Visit an authorized Mercedes-Benz Center as
soon as possible.

599 Practical hints
What to do if …?
Display
Possible cause/consequence
Possible solution
Parking lamp,
Front Left
The left front parking lamp is malfunction-
ing.

Visit an authorized Mercedes-Benz Center as
soon as possible.
Fr. parking lamp, left
Substitute bulb on
The left front parking lamp is malfunction-
ing. A substitute bulb is being used.

Visit an authorized Mercedes-Benz Center as
soon as possible.
Parking lamp,
Right front
The right front parking lamp is malfunction-
ing.

Visit an authorized Mercedes-Benz Center as
soon as possible.
Fr. parking lamp,
Right
Substitute bulb on
The right front parking lamp is malfunction-
ing. A substitute bulb is being used.

Visit an authorized Mercedes-Benz Center as
soon as possible.
Side marker lamp,
Left Front
The front left side marker lamp is malfunc-
tioning.

Visit an authorized Mercedes-Benz Center as
soon as possible.
Side marker lamp,
Right Front
The front right side marker lamp is malfunc-
tioning.

Visit an authorized Mercedes-Benz Center as
soon as possible.
Side marker lamp,
Rear Left
The rear left side marker lamp is malfunc-
tioning.

Visit an authorized Mercedes-Benz Center as
soon as possible.
Side marker lamp,
Rear Right
The rear right side marker lamp is malfunc-
tioning.

Visit an authorized Mercedes-Benz Center as
soon as possible.
Reverse lamp,
Left
The left reverse lamp is malfunctioning.

Visit an authorized Mercedes-Benz Center as
soon as possible.