Alarm keeps going off for no reason.
There is a reason, a faulty sensor likely in the door latch, The dealer must scan the system when this happens to confirm the problem and which part is at fault.
SOURCE: Hi i locked my bmw 323i with key pad now it wont
the BMW is complicated since i had a similar problem with mine. the keypad is connected partly to the ECM and the TDS. the connector to the keypad partially gets corroded over time and wont send the correct signal to disable the alarm. Check the connection first. if it is fine. disconnect the power to the battery for 5 minutes to let the TDS reset and try again. if it fails then chances are the key pad is faulty
SOURCE: how to activate alarm 2001 bmw 325ix
locking and unlocking with the key is to deactivate the alarm not activate it, the alarm is activated every time the car is locked with the remote automatically, u need do nothing else
SOURCE: 2003 BMW Car Alarm keeps going off
Hi , you can lock your car without activating the allarm by using the key to lock your car manually ( not the remote ) , the most common alarm fault on this car is the hood switch, if you change this buy one for a bmw Z4 model which is slightly longer and garrentees a contact when the hood is closed, hope this helps regards mark
SOURCE: Bmw e36 1996 318is
If ews2 alarm is fitted it need to be reset by computer. Any tampering will set it into protectction mode. Had similar problem. You can try the following but if it does not work get someonr with diagnostic computer. PREPARATION 1. Close all doors, trunk, hood and sunroof. 2. The security system must be in 'disarm' mode. The key must be removed from the ignition key slot. ENTER CODE LEARNING MODE 3. Open trunk and leave it opened. 4. Open the drivers door and sit in the drivers seat. 5. Close the drivers door. 6. Cycle the ignition switch 5 times between the 'OFF' position and position 2,(ignition 'ON', all dash warning lamps will illuminate). The red status LED will illuminate continuously, and the siren will 'chirp' once, to indicate that the code-learning mode has been initiated. ?Do No start the engine.? The Ignition switch cycling in step #6 must be performed within 10 seconds. The sequence in steps #1-#6 must be performed within 45 seconds. REGISTER/DELETE ID CODE(S) 7. Open drivers door, (remain seated in the drivers seat) 8. Close the drivers door. 9. Press and release any button on the remote you wish to register in the system. The status LED will shut off momentarily to indicate that one code has been registered. 10. Repeat steps 7 thru 9 to register the three ID codes. It is possible for the system to memorize a total of 4 different ID codes. As a new code is initialized into the memory, the oldest code is automatically deleted. If you had lost your remotes and wished to delete the lost remote ID codes from the memory, you could initialize the ID codes from a newly purchased replacement transmitter four times thereby deleting the previous ID codes from the system memory. EXITING CODE - LEARNING MODE: 11. Open drivers door, and exit from the vehicle, leaving the door opened. 12. Close trunk. 13. Close drivers door. The LED will turn off and the siren will 'chirp twice. 14. The initialization procedure is now completed; Test all remotes to confirm operation.
SOURCE: 2002 BMW 530I ALARM GOES OFF ALL THE TIME BY ITSELF
that is rarely the case actually, bmw's during the 2001 to 2004 models have a known alarm electronic issue.
Your problem is the cause of one or more of the following:
1. faulty hood enclosure sensor damaged from engine heat
2. interior motion sensor is faulty
3. the alarm sensor module
4. OR the sensitivity needs recalibration
None of these are cheap quick fixes, but taking your vehicle to a good mechanic is the first step.
Good luck with your issue.
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