2006 MERCEDES-BENZ S350 Workshop

362 Practical hintsWhat to do if …?Display
Possible cause
Possible solution
?
VISIT WORKSHOP
There may be a malfunction in the:

Fuel injection system


Ignition system


Exhaust system


Fuel system

Visit an authorized Mercedes-Benz
Center as soon as possible.
B
COOLANT
CHECK LEVEL
The coolant level is too low.

Add coolant (
page 294).

If you have to add coolant frequently,
have the cooling system checked by an
authorized Mercedes-Benz Center.
Warning!
G
Do not spill antifreeze on hot engine parts.
Antifreeze contains ethylene glycol which
may burn if it comes into contact with hot
engine parts. You can be seriously burned.
!Do not ignore the low engine coolant
level warning. Extended driving with
the message and symbol displayed
may cause serious engine damage not
covered by the Mercedes-Benz Limited
Warranty.
Do not drive without a sufficient
amount of coolant in the cooling sys-
tem. The engine will overheat, causing
major engine damage.

365 Practical hints
What to do if …?
Display
Possible cause
Possible solution
Ï
COOLANT
VISIT WORKSHOP
The cooling fan for the coolant is malfunc-
tioning.

Observe the coolant temperature display.

Have the fan replaced as soon as possi-
ble.
Î
CRUISE CONTROL
DRIVE TO WORKSHOP
Cruise control or Distronic* is malfunc-
tioning.

Have cruise control or Distronic*
checked by an authorized Mercedes-Benz
Center.
G
DISPLAY DEFECTIVE
VISIT WORKSHOP
The instrument cluster display is malfunc-
tioning.

Continue driving with added caution.

Visit an authorized Mercedes-Benz Cen-
ter as soon as possible.
±
DISPLAY DEFECTIVE
VISIT WORKSHOP
Certain electronic systems are unable to
relay information to the control system.
The following systems may have failed:

Coolant temperature display


Tachometer


Cruise control display

Have the electronic systems checked by
an authorized Mercedes-Benz Center.
J
DOOR OPEN
You are attempting to drive with one or
more doors open.

Close the doors.

367 Practical hints
What to do if …?
When the message:ADD 1.0 QT. OIL
AT FILLING STATION(Canada:
1.0 LITER
)
appears while the engine is running and at
operating temperature, the engine oil level
has dropped to approximately the mini-
mum level. When this occurs, the warning will first
come on intermittently and then stay on if
the oil level drops further.
Visually check for oil leaks. If no obvious oil
leaks are noted, drive to the nearest ser-
vice station where the engine oil should be
topped to the required level with an ap-
proved oil specified in the Factory Ap-
proved Service Products pamphlet.
Display
Possible cause
Possible solution
:
ENGINE OIL LEVEL
VISIT WORKSHOP
The engine oil has dropped to a critical
level.

Check the engine oil level (
page 289)
and add engine oil as required
(
page 292).

If you must add engine oil frequently,
have the engine checked for possible
leaks.
There is water in the engine oil.

Have the engine oil checked.
OIL SENSOR MALFUNCT.
VISIT WORKSHOP
The measuring system is malfunctioning.

Have the measuring system checked by
an authorized Mercedes-Benz Center.
!The engine oil level warnings should
not be ignored. Extended driving with
the symbol displayed could result in
serious engine damage that is not
covered by the Mercedes-Benz Limited
Warranty.

368 Practical hintsWhat to do if …?Display
Possible cause
Possible solution
_
ENTRY POSITION
DO NOT DRIVE
Seat, exterior mirrors and steering wheel
have not yet moved to their preset driving
positions.

Wait until the seat, exterior mirrors and
steering wheel have moved to their driv-
ing positions.
The message will disappear.
Y

HOOD OPEN
You are driving with the hood open.

Close the hood (
page 288).
I
REMOVE KEY
You have forgotten to remove the
SmartKey.

Remove the SmartKey from the starter
switch.
REPLACE KEY
DRIVE TO WORKSHOP
The SmartKey is malfunctioning.

Visit an authorized Mercedes-Benz Cen-
ter as soon as possible.
AUTOMATIC LIGHT ON
REMOVE KEY
SmartKey in starter switch position 1
or2.

Remove the SmartKey from the starter
switch.
KEY
CHECK BATTERY
The battery in the KEYLESS-GO* key is
discharged.

Replace the battery (
page 392).
KEY
NOT RECOGNIZED
SmartKey with KEYLESS-GO* is not rec-
ognized while the engine is running be-
cause

the SmartKey is not in the vehicle


there is strong radio-frequency inter-
ference

Stop the vehicle 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 it has been stopped.

369 Practical hints
What to do if …?
Display
Possible cause
Possible solution
F
KEY
NOT RECOGNIZED
The SmartKey with KEYLESS-GO* is mo-
mentarily not recognized.

Change the position of the SmartKey with
KEYLESS-GO* in the vehicle.

Operate the vehicle with the SmartKey in
the starter switch if necessary.
KEY
STILL IN VEHICLE
A SmartKey with KEYLESS-GO* left in the
vehicle was recognized while locking the
vehicle from the outside.

Take the SmartKey with KEYLESS-GO*
out of the vehicle.
KEY
DRIVE TO WORKSHOP
The KEYLESS-GO* system is malfunction-
ing.

Visit an authorized Mercedes-Benz Cen-
ter as soon as possible.
.
3RD BRAKE LIGHT
CHECK LIGHT

The high mounted brake lamp is malfunc-
tioning.

Visit an authorized Mercedes-Benz Cen-
ter as soon as possible.
STOP LIGHT
VISIT WORKSHOP
Brake lamp illumination is delayed or
lamp is permanently on.

Visit an authorized Mercedes-Benz Cen-
ter as soon as possible.
BRAKE LIGHT LEFT
CHECK LIGHT

SUBSTITUTE LAMP ON
The left brake lamp is malfunctioning. A
substitute bulb is being used.

Visit an authorized Mercedes-Benz Cen-
ter as soon as possible.
BRAKE LIGHT RIGHT
CHECK LIGHT

SUBSTITUTE LAMP ON
The right brake lamp is malfunctioning. A
substitute bulb is being used.

Visit an authorized Mercedes-Benz Cen-
ter as soon as possible.
DISPLAY DEFECTIVE
VISIT WORKSHOP
The display for the lamps or the system is
malfunctioning.

Visit an authorized Mercedes-Benz Cen-
ter as soon as possible.

370 Practical hintsWhat to do if …?Display
Possible cause
Possible solution
.
FRONT FOGLAMP, LEFT
CHECK LIGHT
The left front fog lamp is malfunctioning.

Visit an authorized Mercedes-Benz Cen-
ter as soon as possible.
FRONT FOGLAMP, RIGHT
CHECK LIGHT
The right front fog lamp is malfunctioning.

Visit an authorized Mercedes-Benz Cen-
ter as soon as possible.
HIGH BEAM, LEFT
CHECK LIGHT
The left high beam lamp is malfunction-
ing.

Replace the bulb as soon as possible.
HIGH BEAM, RIGHT
CHECK LIGHT
The right high beam lamp is malfunction-
ing.

Replace the bulb as soon as possible.
LICENSE PLATE L, L
CHECK LIGHT
The left license plate lamp is malfunction-
ing.

Replace the bulb as soon as possible.
LICENSE PLATE L, R
CHECK LIGHT
The right license plate lamp is malfunc-
tioning.

Replace the bulb as soon as possible.
LIGHT SENSOR
DRIVE TO WORKSHOP
The lamp sensor is malfunctioning. The
headlamps switch on automatically.

In the control system, set lamp operation
to manual (
page 165).

Switch on headlamps using the exterior
lamp switch.

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

374 Practical hintsWhat to do if …?Display
Possible cause
Possible solution
<
SEAT BELT SYSTEM
DRIVE TO WORKSHOP
The seat belt system is malfunctioning.

Visit an authorized Mercedes-Benz
Center as soon as possible.
K
CLOSE
SUNROOF
You have opened the driver’s door with
the SmartKey removed from the starter
switch and the sliding portion of the
tilt/sliding sunroof open.

Close the tilt/sliding sunroof
(page 212).
J
CLOSE
SUNROOF
You have opened the driver’s door with
the SmartKey removed from the starter
switch and the tilting portion of the
tilt/sliding sunroof open.

Close the tilt/sliding sunroof
(page 212).
L
TELE AID
DRIVE TO WORKSHOP
One or more main functions of the Tele
Aid system are malfunctioning.

Have the Tele Aid system checked by an
authorized Mercedes-Benz Center.
TELE AID BATTERY
DRIVE TO WORKSHOP
The emergency power battery for the Tele
Aid system is malfunctioning. If the vehi-
cle battery is also discharged, Tele Aid
will not be operational.

Have the Tele Aid system checked by an
authorized Mercedes-Benz Center.
t
FUNCTION
UNAVAILABLE
This display appears if button t or
s on the multifunction steering wheel
is pressed and the vehicle is not equipped
with a telephone.

377 Practical hints
What to do if …?
Display
Possible cause
Possible solution
TIRE PRES. MONITOR
CURRENTLY
UNAVAILABLE
The tire inflation pressure monitor* is un-
able to monitor the tire inflation pressure
due to:

the presence of several wheel sensors
in the vehicle


excessive wheel sensor temperatures


a nearby radio interference source


unrecognized wheel sensors installed

Remove any extra wheel sensors from the ve-
hicle.
As soon as the causes of the malfunction have
been removed, the tire inflation pressure moni-
tor automatically becomes active again.
TIRE PRES. MONITOR
NOT OPERATIONAL
DRIVE TO WORKSHOP
The tire inflation pressure monitor or a
wheel sensor is malfunctioning.

Have the tire inflation pressure monitor
checked by an authorized Mercedes-Benz
Center.
A wheel without proper sensor was in-
stalled.

Have the wheels checked.
Warning!
G
Do not drive with a flat tire. A flat tire affects
the ability to steer or brake the vehicle.
You may lose control of the vehicle. Contin-
ued driving with a flat tire will cause exces-
sive heat build-up and possibly a fire.