Mercedes-Benz 2005 M-Class Operator's Manual page 190

Controls in detail
Useful features
Step 4:
Continue to press and hold the inte-
grated signal transmitter button (3,
4 or 5) while you press and re-press
("cycle") your hand-held remote con-
trol transmitter 1 every two seconds
until the frequency signal has been
learned. Upon successful training, the
indicator lamp 6 will flash slowly and
then rapidly after several seconds.
Proceed with programming step 5 and
step 6 to complete.
Operation of remote control
Switch on ignition.
Select and press the appropriate inte-
grated signal transmitter button (3,
4 or 5 to activate the remote con-
trolled device.
The integrated remote control trans-
mitter continues to send the signal as
long as the button is pressed – up to
20 seconds.
188
Erasing the remote control memory
Switch on ignition.
Simultaneously hold down the signal
transmitter buttons 3 and 5, for ap-
proximately 20 seconds, or until the in-
dicator lamp 6 flashes 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.
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
transmitter button (3, 4 or 5).
Do not release the button.
The indicator lamp will begin to flash
after 20 seconds. Without releasing
the integrated signal transmitter
button, proceed with programming
starting with step 3.