Has BMW NA found a way to resolve the problem of the 800mA current drain in some modes that kills the battery in a matter of days? I saw the service bulletin, but there is no claimed fix. Anyone know of a work around/permanent fix?

Thanks!

:dunno

After turning the ignition off, turn it to the #2 position and then back off again. As far as I know the problem is caused when climate control settings are changed during the las t driving cycle.

what do you mean by the last driving cycle?
I have a 12/02 build and have had my battery mysterously go dead a couple of times. i thought that it was because i didn't lock my doors and the dome light stayed on or something. where would i find a copy of this service bullitin? and what is the device called that is used to measure power draw?

I mean if you changed the climate control settings while you were driving your car. I think it was for 2/03 build dates and later. I can't find where I posted it last. FYI, the interior lights go out after a while if you leave your door open.

Is the climate control "problem" actually intended to be a feature? I know on the MB S500 you can press a few buttons on the climate control and it will keep the interior climate controlled for a period of time with the car unattended. I believe this would be used if you live in a very hot climate and you are only going to ba away from your car for a short time, otherwise your battery would die. maybe this is BMW's foray into this feature and it is not perfected quite yet. Just a thought.

My car battery is dieing every 4 days.... can you plz elaborate more on this.... and help me find this bulletin.

You still did'nt describe what you ment by Driving cycle... unclear to me. DO you mean if when you take your car out ... and you change anything on the climate control ... ?

plz, my battery cant take this.

Originally posted by Garrett
My car battery is dieing every 4 days.... can you plz elaborate more on this.... and help me find this bulletin.

plz, my battery cant take this.

Service Measure B64 202 03 July 2003

According to my dealer, the service dept can now do a re-program. I still see new posts with folks having dead batteries, so I wonder. No direct experience with the fix as my M3 will not come in until January.

Here it is:

They seem to have a fix as SWM3 described. Make an appointment and take down the service bulletin number. Some dealerships are clueless. Until you get it fixed just do the steps I described.

1. Turn the car off.
2. Turn ignition switch back to position 2 without turning the engine on.
3. Turn it back to off and remove the key.

It's very simple. Off-on-off.

We've had a fix for a wile now, Recoding the LSZ will stop the electrical draw caused by the IHKA. See your dealer it's a quick fix.