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 Knock Sensor (KS)
  Item Part Number Description 1 W500025 Knock Sensor (KS) bolt 2 12A699 KS Removal and Installation Remove the intake manifold. For additional information, refer to Section  303-01. NOTE: The Knock Sensor (KS) must ...