2008 Mercedes SL-Class Owner's Manual - Page 263

Controls in detail Useful features Operation of integrated remote control Switch on the ignition ( page 40). Select and press the appropriate integrated signal transmitter button (2, 3 or 4) to activate the remote controlled device. The integrated remote control transmitter continues to send the signal as long as the button is pressed - up to 20 seconds. Erasing the integrated remote control memory Switch on the ignition ( page 40). Simultaneously press and hold outer signal transmitter buttons 2 and 4, for approximately 20 seconds, until the indicator lamp 1 flashes rapidly. Do not hold for longer than 30 seconds. The codes of all three channels are erased. Programming tips If you are having difficulty programming the integrated remote control, here are some helpful tips: Check the frequency of hand-held remote control 5 (typically located on the reverse side of the remote). The integrated remote control is compatible with radio-frequency devices operating between 280-390 MHz. Put a new battery in hand-held remote control 5. This will increase the likelihood of the hand-held remote control sending a faster and more accurate signal to the integrated remote control. While performing step 3, hold hand-held remote control 5 at different lengths and angles from the signal transmitter button (2, 3 or 4) you are programming. Attempt varying angles at the distance of 2 to 5 in (5 to 12 cm) away or the same angle at varying distances. If another hand-held remote control is available for the same device, try the programming steps again using that other hand-held remote control. Make sure new batteries are in the hand-held remote control before beginning the procedure. Straighten the antenna wire from the garage door opener assembly. This may help improve transmitting and/or receiving signals. i Certain types of garage door openers are incompatible with the integrated remote control. If you should experience further difficulties with programming the integrated remote control, contact an authorized Mercedes-Benz Center, or call Mercedes-Benz Customer Assistance Center (in the USA only) at 1-800-FOR-MERCedes, or Customer Service (in Canada) at 1-800-387-0100. i If you sell your vehicle, erase the codes of all three channels. 262