2005 MERCEDES-BENZ SLR lock

308 Practical hintsWhat to do if ...Left display
Right display
Possible cause
Possible solution
ESP
Display malfunc-
tion
Visit
workshop!
The ESP or the ESP display is
malfunctioning.

Continue driving with added caution.

Have the system checked at an authorized
Mercedes-Benz Center immediately.
Failure to follow these instructions increases the risk of an
accident.
SLR
ACL system
malfunction
Visit
workshop!


The locking system is
malfunctioning.


The transmission cooling
system is malfunctioning.

Have the system checked at an authorized
Mercedes-Benz Center immediately.

317 Practical hints
What to do if ...
Left display
Right display
Possible cause
Possible solution
2
Brake lining wear!
Visit
workshop!
The brake pads have reached
their wear limit.

Have the brake pads replaced immediately.
!Brake pad thickness must be visually
checked by a qualified technician at the
intervals specified in the Maintenance
Booklet.
Warning!
G
Have brake pad replacement and other work
on the SBC brake system carried out by
qualified technicians only. Contact your
Mercedes-Benz Center for further informa-
tion. The SBC brake system must be deacti-
vated prior to working on the system. High
pressure is intermittently built up in the sys-
tem as part of its automatic self-test. In ad-
dition, the system is automatically activated
when the vehicle is unlocked by remote con-
trol, when the driver or passenger door is
opened, when the SmartKey in the starter
switch is turned to position1, when the
brake pedal is depressed or when the park-
ing brake is released.
Failure to deactivate the system prior to
maintenance will cause brake pistons to ex-
tend and brake fluid to leak, which may re-
sult in injuries (contusions and acid burns),
see “SBC brake system” (
page 84).

318 Practical hintsWhat to do if ...Left display
Right display
Possible cause
Possible solution
<
Seat belt system
Drive to
workshop!
The seat belt system is mal-
functioning.

Visit an authorized Mercedes-Benz Center immedi-
ately.
O
Close
hood!
You are driving with the hood
open.

Close the hood (
page 243).
Ê
Close
trunk lid!
This message will appear when-
ever the trunk lid is open.

Close the trunk lid (
page 102).
J
Door open!
You are attempting to drive
with one or more doors open.

Close the doors.
<
Airbrake malf.!
The Airbrake locking mecha-
nism is malfunctioning.

Notify an authorized Mercedes-Benz Center
immediately.

342 Practical hintsLocking/unlocking in an emergencyUnlocking the vehicle
Unlocking the trunk
If you are unable to unlock the trunk with
the SmartKey, open the trunk with the
mechanical key.
The handle is located above the rear
license plate recess.1Mechanical key locking tab
2Mechanical key

Move locking tab1 in the direction of
arrow.

Slide mechanical key2 out of the
housing.
Trunk lid lock3Unlocking
Insert the mechanical key in the trunk
lid lock.

Perform the following two steps simul-
taneously:
Turn the mechanical key
counterclockwise to the stop, to
position3.

Pull the trunk lid handle and lift the
trunk lid.
iUnlocking the trunk with the mechani-
cal key will trigger the anti-theft alarm
system when the door is opened.
To cancel the alarm, insert the
SmartKey in the starter switch.

343 Practical hints
Locking/unlocking in an emergency
Unlocking the driver’s door
If you can no longer lock or unlock the
doors using the SmartKey, unlock the driv-
er’s door using the emergency release
catch.The emergency release catch is located on
the left side in the trunk.
1Emergency release catch

Unlock the trunk (
page 342).

Pull emergency release catch1.
The door is unlocked.

Open the door in the normal way.

Notify an authorized Mercedes-Benz
Center.
iUnlocking the driver’s door with the
emergency release catch will trigger
the anti-theft alarm system.
To cancel the alarm, insert the
SmartKey in the starter switch.
iIf it still is not possible to unlock the
door, pull more firmly on the emergen-
cy release catch.

344 Practical hintsReplacing SmartKey batteriesIf the batteries in the SmartKey are dis-
charged, the vehicle can no longer be
locked or unlocked. It is recommended to
have the batteries replaced at an autho-
rized Mercedes-Benz Center.Batteries contain materials that can harm
the environment if disposed of improperly.
Recycling of batteries is the preferred
method of disposal. Many states require
sellers of batteries to accept old batteries
for recycling.
Warning!
G
Batteries contain poisonous and corrosive
substances. Therefore keep the batteries
out of reach of children.
If a battery is swallowed, seek medical help
immediately.

345 Practical hints
Replacing SmartKey batteries
SmartKey

Remove the mechanical key out of the
SmartKey (
page 342).
1Mechanical key
2Battery compartment
Replacement batteries: Lithium, type
CR 2025 or equivalent.

Insert the mechanical key1in side
opening and push gray slide.
The battery compartment is unlatched.

Pull battery compartment2 out of the
housing in direction of arrow.

Remove the batteries.3Battery
4Contact spring

Using a lint-free cloth, insert new
batteries3 under the contact
spring4 with the plus (+) side facing
up.

Return battery compartment into hous-
ing until it locks into place.

Slide mechanical key1 back into the
SmartKey.

Check the operation of the SmartKey.
iWhen inserting the batteries, make
sure they are clean and free of lint.iWhen replacing batteries, always re-
place both batteries. The required re-
placement batteries are available at
any Mercedes-Benz Center.

355 Practical hints
Batteries
Charging the batteries
You can obtain detailed information on
charging the battery from your authorized
Mercedes-Benz Center.
Warning!
G
The brake system requires electrical power
to operate.
A malfunction in the vehicle’s power supply
or electrical system may impair brake sys-
tem operation and switch it into its emer-
gency operation mode. The same applies if
battery is disconnected. To brake, the driver
must then apply significantly greater brake
pedal pressure and depress the pedal much
further to obtain the expected braking ef-
fect. If necessary, apply full pressure to the
brake pedal. Brakes are only applied to the
front wheels. Stopping distance is in-
creased! Adjust your driving style according-
ly. For more information, see “SBC brake
system” (
page 84).
Warning!
G
With a disconnected battery

you will no longer be able to turn the
SmartKey in the starter switch


the gear selector lever will remain
locked in positionP
Warning!
G
Never charge a battery while still installed in
the vehicle unless the battery charge unit
approved by Mercedes-Benz (supplied with
your vehicle) is being used. Gases may es-
cape during charging and cause explosions
that may result in paint damage, corrosion
or personal injury.
A battery charge unit specially adapted for
Mercedes-Benz vehicles and tested and ap-
proved by Mercedes-Benz is available, per-
mitting the charging of the battery in its
installed position. Contact an authorized
Mercedes-Benz Center for information and
availability. Charge battery in accordance
with the separate operating instructions for
the battery charger.