2011 Mercedes C-Class Owner's Manual - Page 236

234 Features 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 have difficulties programming the garage door opener (regardless of where you live) when using the programming steps (see above), proceed as follows: X Press transmitter button (;, = or ?) and hold it down during the following steps until the setup has been completed successfully. X At the same time, press transmitter button B of the garage door remote control for two seconds, then release it for two seconds, then press it again for two seconds. X Repeat this sequence on transmitter button B of the garage door remote control until the frequency signal has been learned. X If the setup procedure is successful, indicator lamp : flashes once slowly and goes out after a few seconds. X Continue with the other programming steps (see above). Problems when programming If you have problems when programming the integrated remote control, please note the following: Rcheck RWhen Loading, stowing and features aiming the garage door remote control at the transmitter buttons on the rear-view mirror, hold garage door remote control A at differing distances and angles from the transmitter button that you are programming. Try different angles from a distance of 2 to 12 inches (5 to 30 cm) or the same angle from differing distances. RIf there is another garage door remote control for the same device, perform the programming steps again using the remote control. Before performing these steps, make sure that new batteries have been installed in the garage door remote control. RAlign the antenna cable of the garage door opener unit. This can improve signal reception/transmission. Opening or closing the garage door Once programmed, the integrated remote control will assume the function of the garage door system's remote control. Please also read the operating instructions for the garage door system. X Turn the SmartKey to position 2 in the ignition lock. X Press transmitter button ;, = or ? in the overhead control panel that you have programmed to operate the garage door. Garage door system with fixed code: indicator lamp : lights up continuously. Garage door system with rolling code: indicator lamp : flashes briefly and then lights up for approximately two seconds. This is repeated for up to 20 seconds. i The transmitter will transmit a signal for as long as the transmitter button is being pressed. The transmission will be halted after a maximum of 20 seconds and indicator lamp : will flash. Press the transmitter button again, if necessary. the transmitter frequency of garage door remote control A (which can usually be found on the rear of the remote control). The integrated remote control is compatible with equipment that operates in the frequency range 280 to 390 MHz. Rreplace the batteries in garage door remote control A. This increases the likelihood of garage door remote control A sending a strong and precise signal to the integrated remote control on the rear-view mirror.