Alarm goes off for no reason
03-20-2010, 08:32 AM
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My Ride: 530i 2006 model w/ Nav
Got my 2006 530i back from the shop for some pretty heavy engine work (replaced the head gasket) and now the alarm will go off for no reason every once in awhile. Any ideas from anyone?
Thanks,
Will
Thanks,
Will
03-20-2010, 08:37 AM
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03-20-2010, 08:44 AM
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BTW, welcome to the Internet. Oh, and 5series.net
03-20-2010, 08:47 AM
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Yes. Some websites have a mod point based system and +1 means you are up voting someone's response.
BTW, welcome to the Internet. Oh, and 5series.net
BTW, welcome to the Internet. Oh, and 5series.net
03-20-2010, 08:54 AM
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Sorry bro. I was agreeing. Sometimes you will see something like +100000000000 or something. It just means "I agree".
03-20-2010, 12:12 PM
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03-20-2010, 12:58 PM
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This isn't much help, Will, just a rough overview of the alarm system. Hopefully someone will chime in soon with some real knowledge.
http://www.bmw-planet.com/diagrams/r...0e61/index.htm
Antitheft Alarm System
Functional description, see BMW Technology:
TIS -> Documents> SI Technology -> 61 09 03 (031)
Notes on function
The DWA electronics are integrated on the ultrasonic signal/interior sensor control unit. They evaluate the signals relevant to the alarm
system and decide whether the alarm should be triggered. The control unit is connected to the data bus K-CAN SYSTEM, across which it receives
the signals of the door modules and CAS and body base module control units. In addition, a separate DWA data bus is connected to the control
unit, across which the signals between the DWA electronics and the control unit emergency siren/inclination sensor (SINE) are transferred.
The inclination sensor and the emergency siren are grouped as one component. They are linked to the DWA electronics across the DWA data bus.
The inclination sensor monitors the horizontal and vertical position of the vehicle and issues an alarm signal in the case of a position change.
The emergency siren emits an acoustic alarm if required. The alarm is triggered when the siren receives a corresponding command from the DWA electronics.
In addition, an alarm is triggered independently of the DWA electronics under the following conditions:
Emergency siren is disconnected from the vehicle electrical system
Disconnection of the vehicle battery
Rapid discharge of the vehicle battery
Overvoltage in the vehicle electrical system (voltage > 16 V)
So that the emergency siren can operate independently of the vehicle battery, it is given a rechargeable battery that is charged when the
engine is running.
In accordance with country-specific legislation, the emergency siren can be coded for an interval or intermittent tone.
In addition to the alarm trigger, the emergency siren can issue an acoustic acknowledgment signal on arming or disarming. This function can
be coded depending on country.
http://www.bmw-planet.com/diagrams/r...0e61/index.htm
Antitheft Alarm System
Functional description, see BMW Technology:
TIS -> Documents> SI Technology -> 61 09 03 (031)
Notes on function
The DWA electronics are integrated on the ultrasonic signal/interior sensor control unit. They evaluate the signals relevant to the alarm
system and decide whether the alarm should be triggered. The control unit is connected to the data bus K-CAN SYSTEM, across which it receives
the signals of the door modules and CAS and body base module control units. In addition, a separate DWA data bus is connected to the control
unit, across which the signals between the DWA electronics and the control unit emergency siren/inclination sensor (SINE) are transferred.
The inclination sensor and the emergency siren are grouped as one component. They are linked to the DWA electronics across the DWA data bus.
The inclination sensor monitors the horizontal and vertical position of the vehicle and issues an alarm signal in the case of a position change.
The emergency siren emits an acoustic alarm if required. The alarm is triggered when the siren receives a corresponding command from the DWA electronics.
In addition, an alarm is triggered independently of the DWA electronics under the following conditions:
Emergency siren is disconnected from the vehicle electrical system
Disconnection of the vehicle battery
Rapid discharge of the vehicle battery
Overvoltage in the vehicle electrical system (voltage > 16 V)
So that the emergency siren can operate independently of the vehicle battery, it is given a rechargeable battery that is charged when the
engine is running.
In accordance with country-specific legislation, the emergency siren can be coded for an interval or intermittent tone.
In addition to the alarm trigger, the emergency siren can issue an acoustic acknowledgment signal on arming or disarming. This function can
be coded depending on country.