Mercedes-Benz SL 500 Operator's Manual page 237

Controls in detail
Useful features
Erasing the integrated remote control
memory
Switch on ignition.
Simultaneously hold down the signal
transmitter buttons 2 and 4, for ap-
proximately 20 seconds, until the indi-
cator lamp 1 blinks rapidly. Do not
hold for longer than 30 seconds.
The codes of all three channels are
erased.
i
If you sell your vehicle, erase the codes
of all three channels.
236
Reprogramming a single integrated
signal transmitter button
To program a device using a signal trans-
mitter button previously trained, follow
these steps:
Press and hold the desired signal trans-
mitter button (2, 3 or 4). Do not re-
lease the button.
The indicator lamp will begin to flash af-
ter 20 seconds. Without releasing the
integrated signal transmitter button,
proceed with programming starting
with step 3.