Note When Disconnecting/Connecting the Battery Lead.

NOTE WHEN DISCONNECTING/CONNECTING THE BATTERY LEAD




Note before disconnecting the battery lead
- If the malfunction indicator lamp (MIL) lights, read off the diagnostic trouble codes (DTCs) for the engine management system. If necessary, remedy any faults before cutting the power to the car
- When the ignition has been switched oft, wait at least 5 minutes before cutting the power to the car. This is so that there is sufficient time for information to be stored in the control modules
- The airbag system is active for ten seconds after the power is cut
- If the vehicle has a heater with remote starting, the personal code is reset to the factory default (1234) if the battery is disconnected or the power is cut.

Caution! Always disconnect the battery negative lead.

Do NOT disconnect the positive lead in the engine compartment.

Note before connecting the battery lead




Warning! The key must be in position 2. No one must be in the car when the battery is connected. This is a safety precaution in case an airbag module activates when the power is connected.

Note after connecting the battery lead
Initializing the upper electronic module (UEM)
Applies only to S80 after chassis number 29668 and all S6ON7OIXC7OIXC9O.
Initialize the central locking, interior lighting and sun roof by unlocking the car using a remote control, key or VADIS vehicle communication.

Calibrating the blower fan
- If the car is equipped with Manual (MCC) or Standard climate control, the blower fan speed must recalibrated if the battery has been disconnected
- Ignition on
- Turn the blower fan switch to maximum
- Turn the blower fan switch to minimum
- The calibration is complete.




Calibrating the sun roof
- The sun roof must be closed
- Press the sun roof switch so that the sun roof is in the tilt position
- Release the switch
- Press the button again for at least five seconds
- Release the switch
- The calibration is complete.

Engine
- When the battery has been disconnected, the car may have to be driven for a few minutes before the engine runs normally.