Mercedes-Benz S-Class Operator's Manual page 270

Controls in detail
Useful features
Step 12:
Confirm the garage door operation by
pressing the programmed integrated
signal transmitter button (2, 3
or 4).
Step 13:
To program the remaining two buttons,
repeat the steps above starting with
step 3.
268
Gate operator/Canadian programming
Canadian radio-frequency laws require
transmitter signals to "time-out" (or quit)
after several seconds of transmission
which may not be long enough for the inte-
grated signal transmitter to pick up the sig-
nal during programming. Similar to this
Canadian law, some U.S. gate operators
are designed to "time-out" in the same
manner.
If you live in Canada or if you are having dif-
ficulties programming a gate operator (re-
gardless of where you live) by using the
programming procedures, replace step 4
with the following:
Step 4:
Continue to press and hold the inte-
grated signal transmitter button (2,
3 or 4) while you press and re-press
("cycle") your hand-held remote con-
trol transmitter 6 every two seconds
until the frequency signal has been
learned. Upon successful training, the
indicator lamp 1 will flash slowly and
then rapidly after several seconds.
Proceed with programming step 5 and
step 6 to complete.