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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > General E90 Sedan / E91 Wagon / E92 Coupe / E93 Cabrio > Dead Car - 2DEC Power Management Code



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      08-23-2011, 05:31 AM   #1
PiZauL
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Vehicle Loss of Electrical Power - 2DEC Power Management Code

This is really random as I have never had an issue with the car. Yesterday I came home, parked the car outside of garage and turned it off. Forgot that I had no keys so I powered it back on (accessory, no start) to open garage, then powered it off and locked the car. Came back to it a few hours later, and it was dead. Couldn't unlock doors, no crank. But what I did notice was my tail light middle section was slightly flickering, the gear indicator on shifter was flickering, and there was a audible thud type noise coming from the bottom of the car (sounded like fuel pump in tank?). I ended up jumping the car and found a 2DEC code stored, which is:

2DEC:
2DEC Power management, battery control
EXPLANATION: Sometimes appears when removing battery cable
FIX: Reconnect battery, clear and rescan

Last time I touched the battery cable was when I reinstalled my JB4, and that was months ago. After I jumped it, I checked the battery and all cables were snug. Battery seems to be healthy as car isn't giving any indication on it needing to be changed. It's as if the car never went to sleep mode properly. On a side note, before jumping it I tried using my key to open the trunk to check on the battery and it refused to do so.. wtf.

Going to the dealer would probably be pointless for this since the car is now fine, and they would prob just ask me if I messed with the battery cable. Ideas? Is my car going to explode? Random electrical gremlin?

Here is a vid to show what was happening:

Last edited by PiZauL; 08-25-2011 at 06:40 AM. Reason: Title change for clarification
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      08-23-2011, 08:06 PM   #2
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Guess this is a unique case?
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      08-24-2011, 11:06 AM   #3
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So car was dead and you couldn't unlock it? How did you eventually get inside? It sounds like it started working again?

Not sure if this is your problem but it sounds something like it.

There was a recent service bulletin issued, SI B61 08 11, Complete Power Failure of the Vehicle's Electrical System

For all E90, E91, E92, E93 produced 2/28/07-05/30/11

"Over time, the positive battery cable connection at the front power distribution box loses connection."

Symptoms include vehicle failing to start, central locking system failure and key doesn't insert into key slot.

Only fix is to remove and replace the battery cable from the fusebox to the battery in the trunk. The way to tell if this is the problem is to look for discoloration of the battery cable going into the fuse box. To do that, you have to pull the fusebox loose and look at the back side.

Good luck.
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      08-24-2011, 01:01 PM   #4
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^Ended up using the key to open the door then I jumped the car. And interesting service bulletin, I will check this out. Thanks! I still have CPO warranty, will have to bring this service bulletin up.

Edit: Now that I think of it, I believe my car was produced in 06. Will double check.
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      08-24-2011, 01:05 PM   #5
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Just had my car fixed for the service bulletin above.

If you're out of warranty get ready to pay $2,000+ for the repair.
(I asked how much it was without my CPO warranty. 10 hours labor plus $1300 dealer cost parts before markup.)

I'm calling BMWNA to get a refund and start things rolling with legal pressure.

This is going to be the next HPFP Lawsuit for sure.


Background:
3 months back my car lost power for 2 minutes.
1.5 months ago it did it 2 times in one day for 1 hour plus each time.
3 weeks ago it did it at work at lunch for 4 hours.

Super inconvenient and made me really worry every time I used my car.


Edit: Just sent my message to BMWNA

Quote:
Hello,
I have just received my 335i coupe back from 2+ weeks of service for repair under SI B61 08 11 (for complete vehicle power loss).

I have been locked out of my vehicle on multiple occasions for the past 3 months leading to discovering this factory defect for up to 4 hours at a time.

This defect has not only jeopardized my safety but my significant other's as well. Without the ability to even re-enter and lock the vehicle we have been stranded road side where anything could have happened.

I understand that without my CPO warranty that this fix would have costed over $2,000 dollars. My Service Advisor also let me know that 4 other cars this month alone have come in and been diagnosed with this issue (along with dozens of others surfacing on online enthusiast forums).

With the HPFP defect, the car is at least able to be driven to a safe location yet this situation was deemed a safety issue and a recall was issued. I have a very strong feeling a recall and class action suit will be soon to follow with this Complete Power Failure.

I am writing to request a refund of my $50 dollar CPO co-pay for repairs due to multiple instances of the safety of myself and my loved ones being put at risk due to this defect.

Thank you. Regards.

Last edited by Elliott@DetailAddict; 08-24-2011 at 01:26 PM.
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      08-24-2011, 01:18 PM   #6
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Hmm, this kinda has me worried. I still have factory warranty until end of this month, then its CPO warranty. Might take it in, gonna keep the code stored and take the JB4 out.

But my symptoms don't really sound like what is said in this bulletin. I was able to use my key in the door slots, didn't work for trunk (and still doesn't - could be lock issue). And you are saying eventually your car starts? For me the battery was drained and needed to be jumped.
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      08-24-2011, 01:27 PM   #7
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I could unlock my car with the key in the driver door.
I was unable to jump though.

Maybe we could change the title of this thread to Vehicle Loss of Power with your code in there too.
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      08-24-2011, 01:39 PM   #8
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If this is an obvious defect in the car which even BMW seems to think it is, i.e. service bulliten then I'm really surprised you had to pay. I would definitely go after a refund. There is no reason you should pay for a manufacture defect, specially one that could turn into a serious safety issue. GL
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      08-24-2011, 01:55 PM   #9
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I completely agree.

I'm sure this will turn into the next BMW recall/Class action suit.
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      08-24-2011, 02:31 PM   #10
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Quote:
Originally Posted by PiZauL View Post
Hmm, this kinda has me worried. I still have factory warranty until end of this month, then its CPO warranty. Might take it in, gonna keep the code stored and take the JB4 out.

But my symptoms don't really sound like what is said in this bulletin. I was able to use my key in the door slots, didn't work for trunk (and still doesn't - could be lock issue). And you are saying eventually your car starts? For me the battery was drained and needed to be jumped.
If your battery was drained, the first step in the SB is to diagnose the battery. Hard to say whether or not your battery was the cause of your problem or the victim due to this or another cause.
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      08-25-2011, 06:39 AM   #11
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Quote:
Originally Posted by E30M3Driver View Post
If your battery was drained, the first step in the SB is to diagnose the battery. Hard to say whether or not your battery was the cause of your problem or the victim due to this or another cause.
I will see if this happens again, then will dig deeper. I suspect the car just never went to sleep, and whatever that noise is, is what drained the battery. But doesnt make sense why my tails and shift indicator would flicker like that.
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      10-25-2011, 09:51 AM   #12
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I am out of warranty and I am certain that I have this issue. If this is in a bulletin does that mean that the work will be done for free?

Thanks,
Dynomyte
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      10-25-2011, 10:13 AM   #13
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Quote:
Originally Posted by Dynomyte View Post
I am out of warranty and I am certain that I have this issue. If this is in a bulletin does that mean that the work will be done for free?

Thanks,
Dynomyte
Only if you are in warranty.
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      10-25-2011, 10:41 AM   #14
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My car had the same issue and I posted what was going on and everyone flamed on me because I had subs in the car, well after getting a lawyer and having the car at the dealer for four months they fixed the issue replaced battery cable,fuse box and junction box, and BMW reimbursed me for four months of payment sry for typos and ongoing sentences I'm posting from my cell phone as soon as I get home ill try taking pics of the service paperwork so you guys know exactly what they did to fix the issue
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      10-25-2011, 10:59 AM   #15
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Disconnect your battery. Take it to an auto store and have it tested. Bet it won't hold a charge. If so, you can only jump start the car by having the powered car connected for 10+ minutes and then turning ignition.

My battery was just replaced. Had same issues.
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      10-25-2011, 11:05 AM   #16
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Quote:
Originally Posted by PiZauL View Post
Hmm, this kinda has me worried. I still have factory warranty until end of this month, then its CPO warranty. Might take it in, gonna keep the code stored and take the JB4 out.

But my symptoms don't really sound like what is said in this bulletin. I was able to use my key in the door slots, didn't work for trunk (and still doesn't - could be lock issue). And you are saying eventually your car starts? For me the battery was drained and needed to be jumped.
Trunk will open. It is very tight though. Turn it hard to the left. Same for me.
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      10-25-2011, 11:37 AM   #17
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last bummer for me.
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      10-25-2011, 12:03 PM   #18
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Just as an update, the issue hasn't reoccured and I have put it behind me. I will prob need a new battery sometime next year, gonna wait until the car starts yelling at me that it needs a new batt.

Quote:
Originally Posted by dsbj View Post
Trunk will open. It is very tight though. Turn it hard to the left. Same for me.
Ah, will see if this does it. Thanks
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      10-30-2011, 04:22 PM   #19
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I am 100% sure I have this issue and I am out of warranty. Any suggestions to what I should do?
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      10-31-2011, 10:50 PM   #20
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Bump. My car is completely dead as we speak. Any suggestions?
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      11-01-2011, 04:21 AM   #21
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