6 Series E64 645Ci (N62) CONVER
If the luggage compartment is opened during the reference run, the reference run is interrupted. The reference
run is then restarted when the luggage compartment is closed again. The monitoring function of the microwave
sensors and the tilt alarm sensor have priority. If a faulty door or hatch contact is detected, this will automatically
be assumed to be closed.
The anti-theft alarm system is deactivated when the central-locking system is unlocked. The DWA LED stops
flashing and the hazard warning lights flash twice as a visual confirmation. Depending on the national version, a
short acoustic warning tone (dual tone) may also sound from the emergency power siren (see national version).
The boot lid can also be unlocked and opened with the remote control without the alarm being triggered, even if
the alarm system is activated. When the boot lid is opened, the interior and tilt monitoring functions are
deactivated. The interior monitoring and tilt monitoring are reactivated as soon as the boot lid is closed again.
DWA alarm triggering (alarm-trigger signal)
The DWA alarm is triggered if an alarm status is detected while the alarm system is activated. The following will
trigger the DWA alarm:
•
Forced opening of a door: Bus signal from door module (door contact)
•
Forced opening of boot lid: Bus signal from body basic module (boot-lid-contact switch)
•
Forced opening of bonnet: Bus signal from Car Access System (CAS) (bonnet-contact switch)
•
Movement in interior: signal from microwave sensors
•
Vehicle in inclined position: signal from tilt alarm sensor
•
Open circuit in sub-bus (between the alarm system control unit in the emergency power siren and the
microwave sensors)
•
Undervoltage, overvoltage, car battery monitoring (positive and negative cables)
When a DWA alarm is triggered, the DWA control unit activates the emergency power siren loudspeaker. At the
same time, the DWA control unit transmits an alarm signal through the K-CAN. The light module activates the
visual alarm via the lighting system.
The emergency power siren may also trigger an acoustic alarm if the anti-theft alarm is active and the
emergency power siren is separated from the vehicle electrical system by manipulation (inbuilt power supply
from batteries).
The DWA alarm is interrupted immediately under the following conditions:
•
Anti-theft alarm is deactivated
•
Message "Key in ignition lock" (from CAS) and terminal 15 ON
Undervoltage recognition, overvoltage recognition, car battery monitoring
When the anti-theft alarm is active, the DWA control unit monitors the on-board supply voltage in the range
between 6.5 and 17 volts.
The DWA control unit recognises the following deviations:
•
Undervoltage On-board supply voltage less than 6.5 volts
•
Overvoltage On-board supply voltage greater than 17 volts
•
On-board supply voltage drops from 7.5 to 6.5 volts within 40 minutes
•
Battery positive or negative cable cut through
The voltage thresholds for overvoltage and undervoltage must be recognised for at least 250 milliseconds.
Monitoring of sub-bus for anti-theft alarm
The sub-bus between the alarm system control unit in the emergency power siren and the microwave sensors is
monitored for open circuits.
SBT Anti-theft alarm system E63/E64
BMW AG - TIS
05.02.2013 03:55
Issue status (12/2007) Valid only until next DVD is issued
Copyright
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