Battery Disconnect Precautions & Relearn Procedures: Notes
WARNING: This page is about a different car, the 2000 Volvo V40 and 2000 Volvo S40. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
Always disconnect the battery negative lead. DO NOT disconnect positive lead in engine compartment.
WARNING:
The key must be in position No. 2. No one must be in vehicle when battery is connected. This is a safety precaution in case an airbag module activates when power is connected.
All vehicles are equipped with an anti-theft stereo system that requires a code to activate. Record stereo code BEFORE disconnecting negative battery cable. After cable is reconnected, enter code into stereo and reset clock.