Alarm issue HELP!!!
 

I have a 2009 x5 4.8i and everytime I'd press the alarm it goes off. Anyone ever experience this? What did u do to fix it?

Thanks, Sam

You mean the button on the key fob to open the liftgate?

When I hit the lock button on the key fob, the alarm goes beeping crazy

BMW says malfunctions like this can be as a result of "local radio waves".

Does your other key fob do this?

Does it do this when you're parked in a different location?

I wonder if your key fob battery is discharged. A long drive might help.

Thanks Brian5 for your feedback, I just went outside to use the other key fob and the alarm works now. Lets see if this does the trick in the long run.
Thanks again!! Sam

Well after a few days of using the of the two key fob, the alarm is going crazy again as soon as I press the lock button. Is there a sensor somewhere? Is there a battery I can replaced on the alarm?

Thanks, Sam

I had the same issue when I purchased my car. I searched this forum and there was a Service Bulletin for a Sensor ceiling center console.

"Ultrasonic Passenger Compartment Motion Detector Triggers False Alarm"

Here you go:
http://www.xoutpost.com/bmw-sav-foru...no-reason.html

Thanks, balx5! Will the dealership honor the tsb, I'm out of warranty??

Not sure on that front as I had mines done before my warranty expired. Give it a try I guess and see what they say.

After a couple months after my post, the alarm cured itself. Now the only problem is when I press the alarm on or off, it doesn't beep. I adjust the idrive menu, still nothing, no beeps!! Could it be my alarm horn?? Anyone ever change this?? Is it hard??

Thanks, Sam

Anyone??

It's been a few months now my alarm works ok except when I arm and disarm the alarm there's no chirp. I played with the idrive setting with no luck. I think it's the alarm horn. Have anyone experience this kind of problem?? Anyone know where the alarm horn located at??
Thanks, Sam

Anyone??

No Bmw mechanics here???

I had a similar problem. There were 3 points of interest..
1) Battery. You car is a 2009. Battery is therefore 5 years old. Have you replaced yet?
2) Hood switch. PS of vehicle. Look for a button near the washer tank. Easy disconnect to determine if that makes a difference.
3) Roof sensor. This was the culprit on mine after I replaced 1 and 2 above.

Hope that helps
ed

1) Battery never change, no sign of weak startup
3) Where is the Roof sensor

Thanks, Sam

1) Alarm going off IS a sign of a weak battery. Had nothing to do with startup. The system senses lower amps and begins to turn off (or reduce) power to non-essential services (like the alarm, radio, etc)
2) Center upper console (where the switches for the pano roof would be). Do a search for "Ultrasonic Passenger Compartment Motion Detector" As someone else pointed out, there was a recall for them being defective.