MERCEDES-BENZ E320 2004 W211 Owner's Manual

331 Practical hints
What to do if …
Display symbol
Display messages
Possible cause
Possible solution
Ï
Coolant
Stop, engine off!
The poly-V-belt could be broken.

Stop immediately and check the
poly-V-belt.
If it is broken:

Do not continue to drive. Otherwise
the engine will overheat due to an in-
operative water pump which may re-
sult in damage to the engine. Notify
an authorized Mercedes-Benz Center.
If it is intact:

Do not continue to drive the vehicle
with this message displayed. Doing so
could result in serious engine damage
that is not covered by the
Mercedes-Benz Warranty.
Coolant
Visit workshop!
The cooling fan for the coolant is malfunc-
tioning.

Observe the coolant temperature dis-
play.

Have the fan replaced as soon as pos-
sible.

332 Practical hintsWhat to do if …Display symbol
Display messages
Possible cause
Possible solution
G
Display malfunction
The instrument cluster display is malfunc-
tioning.

Continue driving with added caution.

Visit an authorized Mercedes-Benz
Center as soon as possible.
Display malfunction
Visit workshop!
The displays for several systems have
malfunctioned. Some systems them-
selves may also have malfunctioned.

Have the electronic systems checked
by an authorized Mercedes-Benz Cen-
ter.
±
Display malfunction
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 Cen-
ter.
J

Door open
You are attempting to drive with one or
more doors open.

Close the doors.

333 Practical hints
What to do if …
Display symbol
Display messages
Possible cause
Possible solution
:
USA only:Add 1 Qt. engine oil
at next refuelingCanada only:Add 1 Liter engine oil
at next refueling
The engine oil level is too low.

Add engine oil (
page 284) and
check the engine oil level
(
page 283).
Engine oil level
Stop, engine off!
There is no oil in the engine. There is a
danger of engine damage.

Carefully bring the vehicle to a halt as
soon as possible.

Turn off the engine.

Add engine oil (
page 284) and
check the engine oil level
(
page 283).
Engine oil level
Reduce oil level!
You have added too much engine oil.
There is a risk of damaging the engine or
the catalytic converter.

Have oil siphoned or drained off. Ob-
serve all legal requirements with re-
spect to its disposal.

334 Practical hintsWhat to do if …When the
Engine oil - Visit workshop!

message appears while the engine is run-
ning and at operating temperature, the en-
gine oil level has dropped to approximately
the minimum level.
When this occurs, the warning will first
come on intermittently and then stay on if
the oil level drops further.If no oil leaks are noted, continue to drive
to the nearest service station where the
engine oil should be topped to the required
level with an approved oil.
Display symbol
Display messages
Possible cause
Possible solution
:
Engine oil
Visit workshop!
The engine oil has dropped to a critical
level.

Check the engine oil level
(page 283) and add oil as required
(page 284).

If you must add engine oil frequently,
have the engine checked for possible
leaks.
It may be that there is water in the engine
oil.

Have the engine oil checked.
Engine oil level
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.

335 Practical hints
What to do if …
Display symbol
Display messages
Possible cause
Possible solution
A
Reserve fuel
The fuel level has dropped below the re-
serve mark.

Refuel at the next gas station
(page 278).
Y
Hood open!
You are driving with the hood open.

Close the hood (
page 281).
F
Key
Check battery!
The SmartKey with KEYLESS-GO* batter-
ies are discharged.

Change the batteries (
page 355).
Key
not recognized!
The SmartKey with KEYLESS-GO* is not
recognized while the engine is running
because

the SmartKey with KEYLESS-GO* 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 cen-
trally locked nor can the engine be
started again after the engine is
stopped.
The SmartKey with KEYLESS-GO* is mo-
mentarily not recognized.

Change the position of the SmartKey
in the vehicle.

Operate the vehicle with the Smart-
Key in the starter switch if necessary.

336 Practical hintsWhat to do if …Display symbol
Display messages
Possible cause
Possible solution
F
Key detected
in vehicle!
A SmartKey with KEYLESS-GO* left in the
vehicle was recognized while locking the
vehicle from the outside.

Take the SmartKey out of the vehicle.
Keyless go
Check system
The KEYLESS-GO* system is malfunction-
ing.

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

Take the SmartKey with KEY-
LESS-GO* with you when leaving the
vehicle.
Remove key
!
You have forgotten to remove the Smart-
Key.

Remove the SmartKey from the start-
er switch.
Replace key
There is no additional code available for
SmartKey or SmartKey with
KEYLESS-GO*.

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

337 Practical hints
What to do if …
Display symbol
Display messages
Possible cause
Possible solution
.
Brake light
Visit workshop!
Brake lamp illumination is delayed or
lamp is permanently on.

Visit an authorized Mercedes-Benz
Center as soon as possible.
Brake light, left
Back-up light on!
The left brake lamp is malfunctioning. A
backup bulb is being used.

Visit an authorized Mercedes-Benz
Center as soon as possible.
Brake light, right
Back-up light on!
The right brake lamp is malfunctioning. A
backup bulb is being used.

Visit an authorized Mercedes-Benz
Center as soon as possible.
Display malfunction
Visit workshop!
The display for the lamps or the system is
malfunctioning.

Visit an authorized Mercedes-Benz
Center as soon as possible.
Front foglight,
left
The left front fog lamp is malfunctioning.

Replace the bulb as soon as possible.
Front foglight,
right
The right front fog lamp is malfunctioning.

Replace the bulb as soon as possible.
Headlt. cornering
The Bi-Xenon cornering lamps system is
malfunctioning.

Visit an authorized Mercedes-Benz
Center as soon as possible.
Headlt. cornering
Back- up light on
The Bi-Xenon cornering lamps system is
malfunctioning. Another light is being
used.

Visit an authorized Mercedes-Benz
Center as soon as possible.
Headlt. cornering
malfunction
Visit workshop!
The Bi-Xenon cornering lamps system is
malfunctioning.

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

338 Practical hintsWhat to do if …Display symbol
Display messages
Possible cause
Possible solution
.
High beam,
left
The left high beam lamp is malfunction-
ing.

Replace the bulb as soon as possible.
High beam,
right
The right high beam lamp is malfunction-
ing.

Replace the bulb as soon as possible.
License plate lamp,
left
The left license plate lamp is malfunction-
ing.

Replace the bulb as soon as possible.
License plate lamp,
right

The right license plate lamp is malfunc-
tioning.

Replace the bulb as soon as possible.
Lamp sensor
Visit workshop!
The lamp sensor is malfunctioning. The
headlamps switch on automatically.

In the control system, set lamp opera-
tion to manual mode (
page 146).

Switch on headlamps using the exteri-
or lamp switch.
Low beam, left
The left low beam lamp is malfunctioning.

Visit an authorized Mercedes-Benz
Center as soon as possible.
Low beam, right
The right low beam lamp is malfunction-
ing.

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

339 Practical hints
What to do if …
Display symbol
Display messages
Possible cause
Possible solution
.
Marker light
,
front left
The front left side marker lamp is mal-
functioning.

Replace the bulb as soon as possible.
Marker light
front right
The front right side marker lamp is mal-
functioning.

Replace the bulb as soon as possible.
Park. light, front left
Back-up light on!

The left parking lamps are malfunction-
ing. A backup bulb is being used.

Visit an authorized Mercedes-Benz
Center as soon as possible.
Park. light,
front right
Back-up light on!

The right parking lamps are malfunction-
ing. A backup bulb is being used.

Visit an authorized Mercedes-Benz
Center as soon as possible.
Rear foglight
Back-up light on!

The rear fog lamp is malfunctioning. A
backup bulb is being used.

Replace the bulb as soon as possible.
Reverse light, left
The left reverse light is malfunctioning.

Replace the bulb as soon as possible.
Reverse light, right
The right backup lamp is malfunctioning.

Replace the bulb as soon as possible.
Switch off lights!
Lamps have been turned on although the
SmartKey in the starter switch is in posi-
tion 0.

Switch off the headlights.
Tail light, left
Back-up light on!
The left tail lamp is malfunctioning. A
backup bulb is being used.

Visit an authorized Mercedes-Benz
Center as soon as possible.
Tail light, right
Back-up light on!
The right tail lamp is malfunctioning. A
backup bulb is being used.

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

340 Practical hintsWhat to do if …Display symbol
Display messages
Possible cause
Possible solution
.
Turn signal, rear left
Back-up light on!

The left rear turn signal lamp is malfunc-
tioning. A backup bulb is being used.

Replace the bulb as soon as possible.
Turn signal, rear right
Back-up light on!

The right rear turn signal lamp is malfunc-
tioning. A backup bulb is being used.

Replace the bulb as soon as possible.
Turn sig., front left
Back-up light on!

The left front turn signal lamp is malfunc-
tioning. A backup bulb is being used.

Replace the bulb as soon as possible.
Turn sig., front right
Back-up light on!

The right front turn signal lamp is mal-
functioning. A backup bulb is being used.

Replace the bulb as soon as possible.
Turn sig.,
left
mirror
The left turn signal in the side 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 sig.,

right
mirror
The right turn signal in the side mirror is
malfunctioning. This message will only
appear if all light emitting diodes have
stopped working.

Have the LEDs replaced as soon as
possible.
H
Tire pres. monitor
activated
!
The tire pressure is being checked.
Tire pres. monitor
Reactivate
The tire inflation pressure monitor* is de-
activated.

Activate the tire inflation pressure
monitor* (
page 292).