2008 Mercedes SL-Class Owner's Manual - Page 262

Controls in detail Useful features 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 integrated signal transmitter to pick up the signal 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 difficulties programming a gate operator (regardless of where you live) by using the programming procedures, replace step 4 with the following: Step 4: Press and hold the signal transmitter button (2, 3 or 4). Do not release this button until it has been successfully trained. While still holding down the signal transmitter button (2, 3 or 4), "cycle" your hand-held remote control button 6 as follows: Press and hold button 6 for 2 seconds, then release it for 2 seconds, and again press and hold it for 2 seconds. Repeat this sequence on the hand-held remote control until the frequency signal has been learned. Upon successful training, indicator lamp 1 will flash slowly and then rapidly after several seconds. Proceed with programming step 5 and step 6 to complete. Reprogramming a single signal transmitter button To program a device using a signal transmitter button previously trained, follow these steps: Switch on the ignition ( page 40). Press and hold the desired signal transmitter button (2, 3 or 4). Do not release the button. Indicator lamp 1 will begin to flash after 20 seconds. Without releasing the signal transmitter button, proceed with programming starting with step 3. i Upon completion of programming the integrated remote control, make sure you retain the hand-held remote control that came with the garage door opener, gate operator or other device. You may need it for use in other vehicles, for future programming of an integrated remote control, or simply for continued use as a hand-held remote control to operate the respective device in other situations. 261