HANDSFREE (2001-2002): Handsfree: Preparations

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

Courtesy of VOLVO CARS OF NORTH AMERICA.

Slide back the driver's seat to the rearmost and uppermost position
Turn the ignition key to position 0
Remove the key from the ignition switch (does not apply to cars with automatic gearboxes)
Disconnect the battery negative lead.

NOTE:

Wait at least five minutes before disassembling the connectors or removing other electrical equipment.