5 Series E60 M5 (S85) SAL
The calibration sequence is then restarted when the luggage compartment is closed again. The monitoring
functions of the ultrasonic interior motion sensor 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 disarmed 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 siren (see national version).
The luggage compartment can also be unlocked and opened with the remote control without the alarm being
triggered, even if the alarm system is activated. When the luggage compartment is opened, the interior
monitoring and tilt monitoring are deactivated. The interior monitoring and tilt monitoring are reactivated as soon
as the luggage compartment 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 contact (via door modules or body basic module)
•
Forced opening of luggage compartment: Bus signal from tailgate contact switch (via body basic module)
•
Forced opening of rear window on E61: Bus signal from rear window contact switch (via body basic module)
•
Forced opening of bonnet: Bus signal from bonnet contact switch (via CAS control unit)
•
Movement in interior: Signal from ultrasonic interior motion sensor
•
Vehicle in inclined position: Signal from tilt alarm sensor
•
Open circuit in local data bus (between DWA control unit and siren)
•
Monitoring of vehicle battery:
-
On-board supply voltage drops from 7.5 to 6.5 volts within 40 minutes
-
Battery positive cable cut through
-
On-board supply voltage > 18 volts
When a DWA alarm is triggered, the DWA control unit activates the siren via the local data bus. At the same
time, the DWA control unit transmits a message through the K-CAN. The light module activates the visual alarm
via the lighting system.
The siren can trigger an acoustic alarm if it is separated from the vehicle electrical system by manipulation while
the DWA is activated.
If the local data bus is separated as this happens, the DWA control unit will also trigger the visual alarm.
A DWA alarm will immediately be cancelled if:
•
The DWA is disarmed (e.g. with the remote control)
•
The message "key is in ignition lock" is detected (from CAS)
Automatic adaptation of sensitivity of ultrasonic interior motion sensor
To prevent false alarms, the sensitivity of the ultrasonic interior motion sensor is adapted to the vehicle's
conditions. To do this, the DWA control unit (and thus also the ultrasonic interior motion sensor) receives the
following information via the K-CAN:
•
Position of front power windows (door module, driver and front passenger)
•
Position of rear power windows (body basic module)
•
Position of sliding/tilting sunroof (sliding/tilting sunroof control unit)
•
Status of comfort functions, e.g. convenience opening (Car Access System)
•
Independent ventilation function (integrated automatic heating / air conditioning system)
SBT Anti-theft alarm system E60, E61
BMW AG - TIS
23.02.2013 20:15
Issue status (12/2007) Valid only until next DVD is issued
Copyright
Page - 4 -
