See also:

Programming trouble-diagnosis
If the HomeLink does not quickly learn the handheld transmitter information: - replace the hand-held transmitter batteries with new batteries. - position the hand-held transmitter with its bat ...

Air pollution
Industrial pollution, the presence of salt in the air in coastal areas, or heavy road salt use accelerates the corrosion process. Road salt also accelerates the disintegration of paint surfaces. ...

Trailer brakes
If your trailer is equipped with a braking system, make sure it conforms to federal and/or local regulations and that it is properly installed. Never connect a trailer brake system directly ...