See also:

Channel preset
Preset buttons (type A and B audio) Preset buttons (type C audio) ...

Replacing lost transmitters
If you lose a transmitter or want to purchase additional transmitters (up to four can be programmed), you should reprogram all of your transmitters for security reasons. It is recommended that you ...

Washing the underbody
Chemicals, salts and gravel used for deicing road surfaces are extremely corrosive, accelerating the corrosion of underbody components, such as the exhaust system, fuel and brake lines, brake cables, ...