High Battery Drain

Klawal · #1 11-25-2007, 02:49 PM

Quote:

Originally Posted by creekwood

I had the same problem. Turns out the Boomerang (Lojack) system was faulty and needed to be replaced.

Hello,

I have here in France the same problem.

What is exactly the Boomerang (Lojack) ?

KEF · #2 11-25-2007, 03:41 PM

Quote:

Originally Posted by Klawal

What is exactly the Boomerang (Lojack) ?

It is a device in the vehcile that can be activated and tracked after the car is stolen. In some states in the US an insurance credit is given if a vehicle has this device.

Cheers,
KEF

Klawal · #3 11-26-2007, 09:48 AM

Quote:

Originally Posted by KEF

It is a device in the vehcile that can be activated and tracked after the car is stolen. In some states in the US an insurance credit is given if a vehicle has this device.

Cheers,
KEF

Thank for your answer.

But I don't have such a device. So, my problem must have another origin...

KEF · #4 11-26-2007, 09:57 AM

Quote:

Originally Posted by Klawal

Thank for your answer.

But I don't have such a device. So, my problem must have another origin...

While I can not say with any degree of confidence, I would tend to believe you do and don't know it.

It isn't a option you order, it simply comes installed. I was unaware of it until my salesman gave me a printed page to send to my insurance company.

In any case, best of luck.

KEF

Klawal · #5 11-26-2007, 12:03 PM

Quote:

Originally Posted by KEF

In any case, best of luck.

KEF

Thanks.

I'll bring it back to my dealer next week. Perhaps he will find something wrong...

burnin m · #6 11-26-2007, 08:14 PM

I've had this error many times. In fact, in both my new 335 and my X5, I've had the battery drain completely.

The X5 was the worst, as EVERYTHING is electronic, from the rear door (to access jumper cables) to the shifter (trying to put in nuetral to reposition dead car).

I've found that if I leave my Radar detector on, I always get the message in the X5. On the other hand, I can leave it on in the 335 and no problems.

My guess is the CD's are constantly spinning, as the radio doesn't seem to turn off. I've noticed that I turn off the car with one song on, and next morning, it's on completely different song. Who knows what other systems are constantly running.

ADVISE: Never use the climate feature that cools the car without you in it. It WILL RUN THE BATTERY DEAD.

Such a stupid feature - wouldn't you think BMW would shut down systems to save enough battery life to start your vehicle???

bell407 · #7 11-27-2007, 04:30 AM

@ burnin m:

there is something wrong in your car. normally all systems are shut down
in a 15-30 minutes period after locking the car. even the ipod will be turned off...
is your radar detector wired to the car electric system (hard wired) ?
Yes it is as you post in the other thread. and you took power from the next suitable cable around, aha. In aviation this is called hot wired meaning when the device is on it will remain on even you shut off the rest of the systems. In your case the V1 thing blocks the shut down procedure of your car as the BMW controllers can´t shut off the detector and so the systems will stay alive (CD players included) and kill your battery !!!
Better get this "rebuildt" in your BMW shop. The bus system of the E70 is a totally new one, so you have to be very carefully when you try to bring non BMW approved stuff in.

So long

Christian

~KaiFy GaiwanY~ · #8 11-28-2007, 12:23 PM

Quote:

Originally Posted by burnin m

ADVISE: Never use the climate feature that cools the car without you in it. It WILL RUN THE BATTERY DEAD.

Such a stupid feature - wouldn't you think BMW would shut down systems to save enough battery life to start your vehicle???

just a Q .. how do u activate or deactivate this feature ? everytime i switch on the engine , i see the AC starting up and its getting a pain in the a$$ , how do i stop this ? i need to warm up the engine without the AC running ..

thanks in advance

HansV · #9 11-04-2008, 07:57 PM

I have a 2008 X5 3.0D and it would seem that the s/ware on this vehicle is a little flakey to say the least.
I got the Battery Discharge message this morning for the 1st time..... so lets wait and see ..

Initially I had the issue where the trip meter (not the odometer) would sporadically reset or increase more than the odometer. it took BMW 7 months and 3 re-programming sessions later before they admitted that it was a "known " issue and it was fixed in the Sept 08 release of their software. So it would not surprise me that the Battery issue is also a software "un-documented feature"
Please let me know if you've experienced similar issues.
Hans (otherwisehappyBMW owner)

LVR · #10 11-05-2008, 11:49 AM

Hi all

Had a similar problem with my 540 recently. Kept having to reset the clock, courtesy lights not working etc etc...

Took it to my dealer who found the cause after several days of testing. Apparently there was a fault in the display unit for the Idrive, which kept on 'waking the car up' every half hour or so, and as I don't drive long distances anymore, the battery was not being recharged.

The electronics are designed to shut down non essential functions so the car can still be started. As the charge gets lower, the list of functions deactivated increases.

Haven't had a problem since.....

Cheers

John