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-   -   Hazard lights keep flashing + battery drain (

alpac 06-17-2010 08:39 AM

Hazard lights keep flashing + battery drain
Recently I have been having the following issue with my daughter's 9199 323i which otherwise works great. Every so often when the car is parked it would start flashing its hazard lights, same lights that flash when we lock or unlock the car, and would keep flashing for sometime. It does not make a difference if the car is locked or unlocked. Also the battery keeps draining every few days. I bought a brand new battery but that did not fix the problem. The battery keeps draining and the car keeps flashing. Not sure if the the two issues are related. Somebody suggested to me that it may be a problem with one of the crash sensors which would explain the flashing. Any idea/suggestion would be greatly appreciated. By the way where is each of the crash sensors located on the E46?

Thanks in advance

Howton22 06-21-2010 05:12 AM

Me too!!!
Oh how I hope somebody answers this question soon. I have resorted to disconnecting the battery every time I let it sit for more than 15 minutes. Also, they start blinking while I am driving down the road.....let me tell you how annoying that is. I feel (and look) like an idiot - had a cop pull alongside me the other day to see if everything was allright.

alpac 06-24-2010 04:53 AM

I am still investigating where this issue is coming from. Any suggestion would be very welcome.
Thanks in advance

Howton22 06-24-2010 09:50 PM

Got more flashing lights!!!!!
I got the fix - found on another thread on Bimmerfest
It has to do with the Hazard/door lock unit next to the gear shift. Unfortunately, it is also next to the cupholders......and when you have a drink there and drive the way most of us drive in our Beemers, stuff spills into the unit (which is not enough to be concave and accept the liquid willingly). I had to remove the center console, which actgually was not too hard. Pull up the ashtray in the back and there are 2 screws that need to be removed. Also, pull up the leather/plastic cover around the gear shift and it will reveal 2 additional screws. once these 4 are removed, the console becomes easy to move around. Did not have to remove the whole thing, but had to lift it high enough to push up on the Hazard/door lock unit, to where it popped out of the plastic that was holding it. There is a plug on the bottom side of it that will probably look very sticky/nasty...mine did. It is a little difficult to remove the plug - i had to shove a small screwdriver under the plastic cover to lift up the 'connector' and pull the plug out. Once removed, the flashers go off again. Ran over the connections with a q-tip to try and get some of the gunk off of them - pretty gross what all is removed. Plugged connection back in and have had no problem for 4 days now (this was after they would randomly flash for 7 straight days). Left the hazard/door lock box loose while I put the console back together, just so I could mess with it more if I had any other issues. All total, took me about 45 minutes - if I had to do it again, could do in about 10. If it ends up being the part is bad, or too dirty to replace, you can find it online for around $45 bucks - much cheaper than the $2-300 i have heard dealers charging to fix this issue.
Hope this helps.

alpac 06-25-2010 08:25 AM

Thanks for the tip:thumbup: I will try that. I already removed the center column a couple of times (one was to repaint it as the black paint it started to peal out) so that will be an easy fix for me if that is where the problem is.
Thanks again

toddjoh 10-17-2010 10:02 PM

If the switch is gummed up with soda spillage try cleaning it with WD40. Works pretty good at removing sticky stuff.

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