Ford Focus Owners Manual: Keys and remote controls

Disabling the passenger airbag

WARNING: Make sure that the passenger airbag is disabled when using a rearward facing child restraint on the front passenger seat. Fitting the passenger airbag deactivation switch WARNING: ...

General information on radio frequencies

CAUTION: The radio frequency used by your remote control can also be used by other short distance radio transmissions (e.g. amateur radios, medical equipment, wireless headphones, remote contr ...

More about Ford Focus:

Ford Focus Brake Booster - Description and Operation
The brake booster consists of: brake booster assembly brake booster vacuum hose brake booster vacuum check valve The brake booster is a single-diaphragm type which utilizes engine vacuum to reduce brake pedal effort and travel. The brake booster is divided into separate vacuum and ...