2007 MERCEDES-BENZ CLK350 key

365 Practical hints
What to do if …?
Where will I find...?
Unlocking/locking in an emergency
Opening/closing in an emergency
Resetting activated head restraints
Replacing SmartKey batteries
Replacing bulbs
Replacing wiper blades
Flat tire
Battery
Jump starting
Towing the vehicle
Fuses

386 Practical hints
What to do if …?
Display messagePossible cause/consequencePossible solution
PSelector lever
in ParkYou 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
N or PYou 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.
Please engage
roll-over barThe roll bars are malfunctioning.Have the system checked at an autho-
rized Mercedes-Benz Center as soon
as possible.
Please release
roll-over barThe roll bars are malfunctioning.Operate the roll bars manually
(
page 413).
Have the system checked at an autho-
rized Mercedes-Benz Center as soon
as possible.

389 Practical hints
What to do if …?
Display symbolDisplay messagePossible cause/consequencePossible solution
2Brakepad wearThe brake pads have reached their wear
limit.Have the brake pads replaced as soon
as possible.
;(USA only)
!(Canada only)
Release parking
brakeYou are driving with the parking brake set.Release the parking brake
(
page 52).
3 Check brake
fluid levelThere is insufficient brake fluid in the res-
ervoir.Risk of accident! Stop the vehicle in a
safe location as soon as possible and
notify an authorized Mercedes-Benz
Center. Do not add brake fluid! This
will not solve the problem.
Warning!G
Driving with the message Check brake
fluid level
displayed can result in an ac-
cident. Have your brake system checked im-
mediately. Do not add brake fluid before
checking the brake system. Overfilling the
brake fluid reservoir can result in spilling
brake fluid on hot engine parts and the
brake fluid catching fire. You could be seri-
ously 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.

395 Practical hints
What to do if …?
Display symbolDisplay messagePossible cause/consequencePossible solution
A Reserve fuelThe fuel level has dropped below the re-
serve mark.Refuel at the next gas station
(
page 312).
I Remove keyYou have forgotten to remove the
SmartKey.Remove the SmartKey from the start-
er switch.
Replace keyNo additional code available for SmartKey
or SmartKey with KEYLESS-GO*.Contact an authorized Mercedes-Benz
Center as soon as possible.
Change
key batteriesThe SmartKey with KEYLESS-GO* batter-
ies are discharged.Change the batteries (page 425).
Key
not detectedThe SmartKey with KEYLESS-GO* is not
recognized 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.
Apply the parking brake (page 58).
Search for the SmartKey.
Otherwise the vehicle cannot be centrally
locked nor can the engine be started
again after the engine has been 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 SmartKey
in the starter switch if necessary.

396 Practical hints
What to do if …?
Display symbolDisplay messagePossible cause/consequencePossible solution
I Keyless Go
Check systemThe KEYLESS-GO* system is malfunction-
ing.Contact an authorized Mercedes-Benz
Center as soon as possible.
Key detected
in vehicleA SmartKey with KEYLESS-GO* left in the
vehicle was recognized while locking the
vehicle from the outside.Take the SmartKey out of the vehicle.
Please do not
forget keyThis 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.
Message is only a reminder.Insert SmartKey in the starter switch.
Take the SmartKey with
KEYLESS-GO* with you when leaving
the vehicle.
. Active headlamps
inoperativeThe Bi-Xenon cornering lamps system is
malfunctioning.Contact an authorized Mercedes-Benz
Center as soon as possible.
Active headlamps
Auxiliary bulb onThe active headlamps are malfunctioning.
Another light is being used.Contact an authorized Mercedes-Benz
Center as soon as possible.
AUTO-Light
inoperativeThe light sensor is malfunctioning. The
headlamps switch on automatically.In the control system, set lamp opera-
tion to manual mode (
page 160).
Switch on headlamps using the exteri-
or lamp switch.
Contact an authorized Mercedes-Benz
Center as soon as possible.

399 Practical hints
What to do if …?
Display symbolDisplay messagePossible cause/consequencePossible solution
. Rear foglamp
Substitute bulb on

The foglamp is malfunctioning. A back-up
bulb is being used.Replace the bulb as soon as possible
(
page 432).
Reverse lamp
left sideThe left backup lamp is malfunctioning.Replace the bulb as soon as possible
(
page 432).
Reverse lamp
right sideThe right backup lamp is malfunctioning.Replace the bulb as soon as possible
(
page 432).
Side marker lamp
front leftThe front left side marker lamp is malfunc-
tioning.Contact an authorized Mercedes-Benz
Center as soon as possible.
Side marker lamp
front rightThe front right side marker lamp is mal-
functioning.Contact an authorized Mercedes-Benz
Center as soon as possible.
Tail lamp
left
Substitute bulb on

The left tail lamp is malfunctioning. A
back-up bulb is being used.Replace the bulb as soon as possible
(
page 432).
Tail lamp
right
Substitute bulb on

The right tail lamp is malfunctioning. A
back-up bulb is being used.Replace the bulb as soon as possible
(
page 432).
Turn off lampsYou have removed the SmartKey from the
starter switch, opened the driver’s door
and left the headlamps on or removed the
SmartKey with KEYLESS-GO* from the ve-
hicle and left the headlamps on.Switch off the headlamps.

410 Practical hints
Unlocking/locking in an emergency
Unlocking the vehicle
If you are unable to unlock the vehicle with
the SmartKey or KEYLESS-GO*, open the
driver’s door and the trunk using the
mechanical key.
1Mechanical key locking tab
2Mechanical key
Move locking tab1 in direction of
arrow.
Slide mechanical key2 out of the
housing.Unlocking the driver’s door
1Unlocking
Insert the mechanical key into the
driver’s door lock until it stops.
Turn the mechanical key counterclock-
wise to position1 until the locking
knob moves up.
The driver’s door is unlocked.
Pull the door handle to open the
driver’s door.
iUnlocking and opening the driver’s door
and/or the trunk with the mechanical key will
trigger the anti-theft alarm system.
To cancel the alarm, do one of the following:

Press button Œ or ‹on the
SmartKey.

Insert the SmartKey in the starter switch.
Vehicles with KEYLESS-GO*:

Pull the outside door handle.

Press the KEYLESS-GO* start/stop button
(
page 37).

411 Practical hints
Unlocking/locking in an emergency
Unlocking the trunk
A minimum height clearance of 5.41 ft
(1.65 m) is required to open the trunk lid.
The trunk lid lock is located next to the
handle above the rear license plate recess.
1Unlocking in an emergency
2Handle
Insert the mechanical key into the
trunk lid lock until it stops.
Turn the mechanical key
counterclockwise to position1 and
hold it in this position.
Pull the trunk lid handle2 and lift the
trunk lid.
The trunk opens.
Turn the mechanical key back and
remove it from the trunk lid lock.
Locking the vehicle
If you cannot lock the vehicle with the
SmartKey or SmartKey with
KEYLESS-GO*, do the following:
Close the passenger door and the
trunk.
Press the central locking switch in the
center console (
page 118).
Check to see whether the locking knob
on the passenger door has moved
down.
If necessary, push it down manually.
Remove the mechanical key out of the
SmartKey (
page 410).
Check whether the trunk is locked.
If necessary, lock the trunk with the
mechanical key (
page 117).
Except for the driver’s door, the vehicle
should now be locked.
!The trunk lid swings open upwards
automatically. Always make sure there is suffi-
cient overhead clearance.