Mercedes-Benz S 350 Owner's Manual page 409

Clearing the remote control memory
Turn the key to position 2 in the ignition
lock.
Press and hold transmitter buttons 2
and 4 for about 20 seconds until indi-
cator lamp 1 flashes rapidly.
The memory is cleared.
i
You should clear the remote control memory
before selling the vehicle.
Controls
Features
387