Body Controls

Vehicles equipped with body, air conditioning, anti-lock brake or memory computers may require a computer relearn procedure after components are replaced or the vehicle battery is disconnected. Vehicle computers memorize and store vehicle information and operation selections. When the vehicle battery is disconnected, vehicle computer memory may be lost, requiring relearning or resetting. Depending on the vehicle and how it is equipped, the following memories may exist:

• Seat position.
• Tilt/telescoping steering wheel position.
• Mirror position.
• Radio presets and anti-theft code.
• Clock.
• Remote keyless entry custom features.
• Door key lock entry custom features.
• Power window or sunroof operation.

These systems do not affect vehicle operation. To reset miscellaneous body systems after battery is disconnected, see appropriate procedure under MISCELLANEOUS BODY SYSTEM RESET PROCEDURES .

Other computer relearn procedures that maybe required for vehicle or system operation may include:

• Initial control unit programming.
• Traction control yaw sensor initializing (Electronic Steering).
• Multiplex communication.
• Anti-theft system or engine immobilizer system passwords.