I turned on my BMW M3 today and weird image showed up in my console display. At first, I thought it was the hood of the car -- which kind of made sense. I had just jump-started my Audi A4 (long story) and perhaps I missed closing the hood all of the way.
Nope. That was not it.
I took another look at the icon, and then in my i-Drive pane, I see the message:
Anti-trap function deactivated
Say what? What was the anit-trip function in the first place?
I then went into the system messages and I received a little more information:
Anti-trap function deactivated.
Have the system checked by the nearest BMW center.
Ok, that icon now made a little more sense. But, ugh -- did I really need to go to the BMW center for this? I tried the sunroof, and it was jerky -- none of the one-touch buttons worked to either open, close or tilt the sunroof on the car. However, I had not used it in a few days -- leaving me a little curious about the cause.
But, then I found out what the fix was in my case. The anti-trap function for the sunroof needed to be reset.
How do you reset it? Luckily, it is easy.
All you need to do is push in the sliding sunroof button in and hold it for approximately 60 seconds. After holding for 15-20 seconds, the sunroof will start cycling through all the functions and then completes the reset once the sunroof closes. Release the button and then the anti-trap function has been reset.
Whew, that was a close one. The technology is great, but the false alarms are not quite as exciting.
On a similar note, apparently this can occur with power windows, possibly with the message "Power windows anti-trap function deactivated." If you encounter this message perform the following on the desired window:
- Start in the fully up or down position
- Either close or open the window all the way holding the button and hold for 5 seocnds after the action completes.
- Then reverse the action in the same manner and complete by holding the window button for an additional 5 seconds after the action complete
The window should now be repaired. If you're having either problem, hopefully this post helped you out. Good luck!