Mercedes-Benz 2003 SL 500 Operator's Manual page 87

Restoring to factory setting
Press and hold the programming
button 1 until the "Global unlock"
symbol 3 lights up.
!
If you cannot lock or unlock the vehicle
with the KEYLESS-GO card, then either
the batteries of the KEYLESS-GO card
are discharged or the KEYLESS-GO
card is malfunctioning.
Check the batteries of the
KEYLESS-GO card ( page 87) and
replace them if necessary
( page 294).
or
Use the key to unlock the doors
( page 81) and trunk ( page 82)
as required. Lock the vehicle using
the key ( page 81).
If your KEYLESS-GO card is malfunc-
tioning, contact your authorized
Mercedes-Benz Center.
Checking the batteries
Briefly press the programming
button 1.
The KEYLESS-GO card batteries are in
order if the indicator lamp for either the
"Driver's door" 2 or "Global unlock" 3
comes on red or green.
!
If the symbols 2 or 3 do not light up
during the check, then the batteries of
the KEYLESS-GO card are discharged.
Change the batteries
( page 294).
You can obtain the batteries at any au-
thorized Mercedes-Benz Center.
Controls in detail
Locking and unlocking
Checking vehicle lock status
If you cannot remember whether you have
locked the vehicle, you can check the lock
status using the KEYLESS-GO card.
Briefly press the programming
button 1.
The indicator lamp for the "Driver's
door" 2 or "Global unlock" 3 lights up
in red or green.
Vehicle lock status:
Red Vehicle is locked
Green Vehicle is unlocked
87