Volvo FM Handbook page 389

378 Alcolock
3 Connect an ALCOLOCK hand unit to the hand unit
cable by plugging in the cable to the hand unit's lower
part. You should hear a weak click sound.
All personal settings are downloaded to the
ALCOLOCK'S CONTROL UNIT.
The ALCOLOCK is now ready for normal operation.
The following steps must be taken if the handset
was exchanged while the ignition was ON.
1 Disconnect the ALCOLOCK'S hand unit cable from
the hand unit.
2 ALCOLOCK'S CONTROL UNIT peeps twice every
15th second to remind the driver that the hand unit has
been disconnected while the engine is running.
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