B650516

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SI B65 05 16
Audio, Navigation, Monitors, Alarms, SRS
March 2016
Technical Service
SUBJECT
False Alarms of the Anti-Theft Alarm System
MODEL
F15 (X5)
F16 (X6)
F48 (X1)
F85 (X5 M)
F86 (X6 M)
G12 (7 Series Sedan)
I01 (i3)
I12 (i8)
SITUATION
The alarm (DWA) siren continues to activate after locking vehicle
CAUSE
An “unapproved” device is connected to the On-Board Diagnostics (OBD) port of the vehicle.
This keeps the Ethernet communication line active which triggers the alarm when the vehicle tries
to enter sleep mode.
CORRECTION
Remove the “unapproved” device from OBD port.
PROCEDURE
1. Reproduce customer complaint.
2. Check for any devices plugged into or piggybacked into the OBD connector, such as:
{
Vehicle GPS tracking devices
{
Insurance discount tracker
{
Telephone App dongles for monitoring OBD outputs on a smartphone
{
Radar detector power supply
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Was a device found in the OBD port?
YES- Go to Step 3.
NO - Run the test plan for the alarm counter.
NOTE- If the root cause of the problem was a connected OBD device then you should
see “Alarm activation due to interrupted Ethernet communication.”
3. Remove device from OBD port.
4. 4. Test DWA alarm function.
Does it operate correctly?
YES- Release the vehicle.
NO – Continue with standard diagnostic procedure. Follow test plan for any stored faults.
Please submit a Puma case if you require further troubleshooting support.
WARRANTY INFORMATION
Not applicable.
[ Copyright ©2016 BMW of North America, Inc. ]
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