2004 MERCEDES-BENZ CL55AMG change key battery

313 Practical hints
What to do if …?
Display symbol
Display messages
Possible cause
Possible solution
F
KEY
CHECK BATTERY
The battery in the KEYLESS-GO* key is
discharged.

Change the battery (
page 332).
KEY
NOT RECOGNIZED!
SmartKey with KEYLESS-GO* is not rec-
ognized while the engine is running be-
cause

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 with
KEYLESS-GO*.
Otherwise the vehicle cannot be centrally
locked nor can the engine be started again
after it has been stopped.
SmartKey with KEYLESS-GO* is momen-
tarily 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
DETECTED IN VEHICLE
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.

387 Technical terms
RON
(R
esearch O
ctane N
umber)
The Research Octane Number for gaso-
line as determined by a standardized
method. It is an indication of a gaso-
line's ability to resist undesired detona-
tion (knocking). The average of both
the ->MON (Motor Octane Number)
and RON (Research Octane Number) is
posted at the pump, also known as AN-
TI-KNOCK INDEX.
Shift lock
When the vehicle is parked, this lock
prevents the transmission selector le-
ver from being inadvertently moved out
of positionP without SmartKey turned
and brake pedal depressed.
Speedshift
Steering wheel gearshift control and
manual shift program. In the manual
shift program mode you can change
the gears yourself on the steering
wheel or by using the selector lever. SRS
(S
upplemental R
estraint S
ystem)
Seat belts, emergency tensioning de-
vice and airbags. Though independent
systems, they are closely interfaced to
provide effective occupant protection.
Tele Aid System
(T
elematic A
larm I
dentification on D
e-
mand)
The Tele Aid system consists of three
types of response: automatic and man-
ual emergency, roadside assistance
and information. Tele Aid is initially ac-
tivated by completing a subscriber
agreement and placing an acquain-
tance call.
The Tele Aid system is operational pro-
vided that the vehicle’s battery is
charged, properly connected, not dam-
aged and cellular and GPS coverage is
available.Telematics
A combination of the terms “telecom-
munications” and “informatics”.
Tightening torque
Force times lever arm (e.g. a lug
wrench) with which threaded fasteners
such as wheel bolts are tightened.
Tire speed rating
Part of tire designation; indicates the
speed range for which a tire is ap-
proved.
Traction
Force exerted by the vehicle on the
road via the tires.
VIN
(V
ehicle I
dentification N
umber)
The number set by the manufacturer
and placed on the body to uniquely
identify each vehicle produced.
Voice control system*
Voice control system for car phones,
portable cell phones and audio sys-
tems (radio, CD, etc.).

392 Index
Front lamps 336
High beam 336
High mounted brake lamp 337
License plate lamps 337, 340
Low beam 336
Parking lamps 336, 337, 339
Rear fog lamp 337, 340
Side marker lamps 336, 339
Standing lamps 336, 337, 339
Tail lamp assemblies 337, 340
Turn signal lamps 336, 337
C
CAC (Customer Assistance Center) 383
California
Important notice 11
Calling up
Distronic* settings 142
Range (distance to empty) 144
Service indicator 283
CAN system 383
Cargo tie-down hooks 220
Cassette player
Operating 136Catalytic converter 255
CD changer* 137
CD mode 137
CD player
Operating 136
Center console 25
AIRBAG OFF indicator lamp 298
Lower part 26
Upper part 25
Centigrade
Setting temperature units 148
Central locking
Automatic 105
From inside 106
Switch 106
Switching on/off (control
system) 153
Unlocking from inside 106
Central locking switch 106
Changing
Batteries (SmartKey) 333
Battery (SmartKey with
KEYLESS-GO*) 334
Key setting 154SmartKey with KEYLESS-GO*
setting 94
Vehicle level 212
Changing CDs 137
Charcoal filter 181
Activating 181
Deactivating 181
Charging
Vehicle battery 349
CHECK ENGINE malfunction indicator
lamp 294
Checking
Coolant level 266
Oil level 259, 261
Oil level via control system 262
Tire inflate pressure 259
Vehicle lighting 259
Checking the batteries
SmartKey 91
Child safety 69
Airbags 62
Infant and child restraint systems 66,
69
LATCH child seat mounts 74