Mercedes-Benz CL-Class 2006 Owner's Manual page 488

Problem
The battery check lamp in the KEYLESS
GO key does not light up when tested.
The vehicle cannot be started using the
KEYLESS GO button. The KEYLESS GO key
is in the vehicle.
You have lost the KEYLESS GO key.
Possible cause/consequence
The KEYLESS GO key batteries are dis-
charged.
You did not depress the brake when start-
ing the engine.
Practical advice
Troubleshooting
Suggested solutions
Change the batteries ( page 474).
Depress the brake pedal and press the
KEYLESS GO button.
Have the KEYLESS GO key cancelled at
a Mercedes-Benz Service Centre.
Report the loss immediately to the vehi-
cle insurers.
If necessary, have the manual locks
changed too.
467