Warning: When performing service on or near the SIR components or the SIR wiring, the SIR system must be disabled. Refer to SIR Disabling and Enabling . Failure to observe the correct procedure could cause deployment of the SIR components, personal injury, or unnecessary SIR system repairs.

Warning: Refer to Battery Disconnect Warning in the Preface section.

1. Record all of the vehicle preset radio stations.
2. Turn OFF all the lamps and the accessories.
3. Make sure the ignition switch is in the OFF position.
4. Disconnect the battery negative cable from the battery.

Caution: Refer to Fastener Caution in the Preface section.

Note: Clean any existing oxidation from the contact surface of the battery cable using a wire brush before installing the battery cable to the battery.

1. Connect the battery negative cable to the battery and tighten the negative terminal bolt to 4 N·m (36 lb in).
2. Program the radio stations back into the radio as recorded at the beginning of the procedure.
3. Set the clock to the current time. Refer to Radio/Audio System Description and Operation.