Amplifier (2001-2009): Amplifier: Preparations

Fig 1: Identifying Ignition Switch OFF & Disconnected Negative Battery Lead

Courtesy of VOLVO CARS OF NORTH AMERICA.

Push the right-hand front seat into the center position. Raise it to the highest position.
Push the left-hand front seat into the rear position.
Turn the ignition key to position 0.
On cars with manual gearbox: Remove the ignition key.
NOTE:
Wait at least five minutes before disassembling the connectors or removing other electrical equipment.
Disconnect the battery negative lead.