You mean the steps as in the user guide did not do it:
Programming integrated remote control
Step 1:
Switch on the ignition ( page 315).
Step 2:
If you have previously programmed a
signal transmitter button and wish to
retain its programming, proceed to
step 3.
If you are programming the integrated
remote control for the first time, press
and hold the two outer signal transmitter
buttons2 and4 and release
them only when the indicator lamp1
begins to flash after approximately
20 seconds (do not hold the button for
longer than 30 seconds). This procedure
erases any previous settings for
all three channels and initializes the
memory.
If you later wish to program a second
and/or third hand-held transmitter to
the remaining two signal transmitter
buttons, do not repeat this step and begin
directly with step 3.
Step 3:
Hold the end of the hand-held remote
control5 of the device you wish to
train approximately 2 to 5 in
(5 to12 cm) away from the signal transmitter
button (2, 3 or4) to be programmed,
while keeping the indicator
lamp1 in view.
Step 4:
Using both hands, simultaneously
press the hand-held remote control
button6 and the desired signal transmitter
button (2, 3 or4). Do not
release the buttons until step 5 is completed.
The indicator lamp1 will flash, first
slowly and then rapidly.