2005 MERCEDES-BENZ CLK320 COUPE Owner's Manual

367 Practical hints
What to do if …?
Display
Display message
Possible cause
Possible solution
Cruise Con-
trol
Cruise control
Drive to workshop
Cruise control is malfunctioning.

Have cruise control checked by an au-
thorized Mercedes-Benz Center.
ESP
malfunction
Visit workshop
The ESP was deactivated because of a
malfunction or interrupted power supply.
The ABS might not be operational.

Continue driving with added caution.

Visit an authorized Mercedes-Benz
Center as soon as possible.
Failure to follow these instructions in-
creases the risk of an accident.
Display defective
Visit workshop!
The ESP or the ESP display is malfunction-
ing.

Continue driving with added caution.

Visit an authorized Mercedes-Benz
Center as soon as possible.
Failure to follow these instructions in-
creases the risk of an accident.
unavailable
See Operator’s Manual
The charging voltage has fallen below
10 volts and the ESP has switched off.
When the voltage is above this value
again, the ESP is operational again.
If necessary, have the generator (al-
ternator) and battery checked.
The self-diagnosis has not been complet-
ed.
The display will clear after driving a short
distance at more than 12 mph (20 km/h).

368 Practical hintsWhat to do if …?Display
Display messages
Possible cause
Possible solution
Front passenger
airbag
activated
see Oper.’s Man.
Air bag is activated while driving even
though a child, small individual, or object
below the system's weight threshold is on
the front passenger seat, or the front pas-
senger seat is empty. Objects on the seat
or forces acting on the seat may make the
system sense supplemental weight.
Stop the vehicle in a safe location as soon
as possible and check the following:
Make sure that there is nothing be-
tween seat cushion and child seat and
check installation of the child seat.

Make sure that no objects applying
supplemental weight onto the seat are
present. The system may recognize
such supplemental weight and sense
that an occupant on the front passen-
ger seat is of a heavier weight than ac-
tually present.
(Continued on next page)

369 Practical hints
What to do if …?
Display
Display messages
Possible cause
Possible solution
Front passenger
airbag
activated
see Oper.’s Man.
If performing any of the above corrective
steps is successful, the message
Front
passenger airbag deactivated see
Oper.’s Man.
will appear in the
multifunction display, confirming the situ-
ation has been remedied. Note that after
performing the corrective steps, it may
take up to 60 seconds for the message
Front passenger airbag deactivated
see Oper.’s Man.
to appear.
If the message
Front passenger airbag
activated see Oper.’s Man.
remains on
in the multifunction display and/or the
56
indicator lamp remains out even
after performing the above corrective
steps, have the system checked as soon
as possible by an authorized
Mercedes-Benz Center.
Warning!
G
If the message
Front passenger airbag
activated see Oper.’s Man.
remains
on in the multifunction display and/or the
56 indicator lamp remains out even
after performing the above corrective steps,
do not have any children12 years old and
under and other small individuals use the
front passenger seat until the system has
been repaired.

370 Practical hintsWhat to do if …?Display
Display messages
Possible cause
Possible solution
Front passenger
airbag
deactivated
see Oper.’s Man.
Air bag is deactivated while driving even
though an adult or someone larger than a
small individual is occupying the front
passenger seat. Forces acting on the seat
may make the system sense a decrease in
weight.
Stop the vehicle in a safe location as soon
as possible and check the following:
Do not lean on armrests or lift yourself
up using handle over the door. This
may make the system sense that an
occupant of a lesser weight than actu-
ally present is on the front passenger
seat.

Re-position yourself.

Sit properly belted in a nearly upright
position with your back against the
seat backrest.
If performing any of the above corrective
steps is successful, the message
Front
passenger airbag activated see
Oper.’s Man.
will appear in the
multifunction display, confirming the situ-
ation has been remedied.
(Continued on next page)

371 Practical hints
What to do if …?
Display
Display messages
Possible cause
Possible solution
Front passenger
airbag
deactivated
see Oper.’s Man.
Note that after performing the corrective
steps, it may take up to 60 seconds for
the message
Front passenger airbag
activated see Oper.’s Man.
to appear.
If the message
Front passenger airbag
deactivated see Oper.’s Man.
remains
on in the multifunction display and/or the
56
indicator lamp remains on even
after performing the above corrective
steps, have the system checked as soon
as possible by an authorized
Mercedes-Benz Center.
Do not have any passenger use the front
passenger seat until the system has been
repaired.
Warning!
G
If the message
Front passenger airbag
deactivated see Oper.’s Man.
re-
mains on in the multifunction display and/or
the 56 indicator lamp remains illumi-
nated even after performing the above cor-
rective steps, do not have any passenger
use the front passenger seat until the sys-
tem has been repaired.

372 Practical hintsWhat to do if …?Display
Display message
Possible cause
Possible solution
P
Selector lever
in park position
You have turned off the engine with the
KEYLESS-GO* start/stop button in gear
selector lever positionN and opened the
driver’s door.
or
You have attempted to switch off the en-
gine with the KEYLESS-GO* start/stop
button while the gear selector lever was in
positionR orD.

Place the gear selector lever in
positionP.
Please
shift to
P or N
You have attempted to start the engine
with the KEYLESS-GO* start/stop button
while the gear selector lever was in
positionR orD.

Place the gear selector lever in
positionP or N.

373 Practical hints
What to do if …?
Symbol messagesDisplay symbol
Display message
Possible cause
Possible solution
#
Visit Workshop!
The battery is no longer charging.
Possible causes:

broken poly-V-belt


alternator malfunctioning

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
inoperative water pump which may
result in damage to the engine. Notify
an authorized Mercedes-Benz Center.
If it is intact:

Drive immediately to the nearest
authorized Mercedes-Benz Center.
Undervoltage
Charge battery
The battery has insufficient voltage.

Start the engine (
page 46).
Undervoltage
Switch off
consumers
The battery has insufficient voltage.

Turn off unnecessary electrical con-
sumers.

374 Practical hintsWhat to do if …?Display symbol
Display message
Possible cause
Possible solution
2
Brake wear
Visit workshop
The brake pads have reached their wear
limit.

Have the brake pads replaced as soon
as possible.
;
(USA only)
!
(Canada only)
Parking brake
Release brake!
You are driving with the parking brake set.

Release the parking brake
(page 49).
3
Brake fluid
Visit workshop
There is insufficient brake fluid in the res-
ervoir.

Risk of accident! Stop the vehicle and
notify an authorized Mercedes-Benz
Center. Do not add brake fluid! This
will not solve the problem.
Warning!
G
Driving with this message displayed can re-
sult in an accident. Have your brake system
checked immediately. Do not add brake flu-
id before checking the brake system. Over-
filling the brake fluid reservoir can result in
spilling brake fluid on hot engine parts and
the brake fluid catching fire. You can be se-
riously burned.
!If you find that the brake fluid in the
brake fluid reservoir has fallen to the
minimum mark or below, have the
brake system checked for brake pad
thickness and leaks.
!Brake pad thickness must be visually
checked by a qualified technician at the
intervals specified in the Maintenance
Booklet.