Battery Disconnect/Connect Procedures

Battery Disconnect/Connect Procedures

WARNING: The backup power supply energy must be depleted before any supplementary restraint system repairs are carried out. To deplete the backup supply energy, first disconnect the battery ground cable, then disconnect the battery positive cable and wait ten minutes to avoid accidental deployment and personal injury. Failure to follow this instruction may result in personal injury.

CAUTION: Disconnecting the battery cables will cause all of the electronic control modules to lose all stored data/fault codes.

NOTE: Following reconnection of the battery, the engine should be allowed to idle as the stored idle and drive values contained within the engine control module (ECM) will have been lost. This may cause driveability concern if the following procedure is not carried out.

Battery disconnect procedure Battery connect procedure
1. If possible, apply parking 1. Connect the battery cables and
brake or alternatively, tighten to 5 Nm. Ground
chock wheels. cable must be connected last
2. If required, record any 2. Install the battery cover and
customer audio and climate close the luggage compartment lid.
control settings. This also
applies to all electronic control
module stored information.
3. Switch off ignition. 3. Start the engine and allow
to idle until the engine reaches
normal operating temperature.
4. Open the luggage compartment 4. Switch the engine off.
lid.
5. Release the cover and 5. Restart the engine and allow to idle
disconnect the battery ground for approximately two minutes
cable. (this will allow the ECM to learn the
idle values).
6. If required, disconnect 6. Apply and hold the brake pedal,
the battery positive cable. select drive and allow the engine
idle for a further two minutes.
7. Drive the vehicle for approximately
five miles/eight kilometers
of varied driving to enable the
ECM to complete it's
learning strategy.
8. Reset the audio unit and climate
control assembly to original
customer settings.