[BlindWolf187]

Hey guys,

I did some searches but could not find anybody referencing this issue, so I am just wondering if any of you have seen anything like it...

When I start my car after it has been sitting for a long time, the audio I was playing last starts back up. The first speakers to start playing the audio are the front drivers side speakers. Then, after a few seconds (~5-10) the rest of the speakers kick on.
Is this an amp problem?
This issue is non-critical, because once the Logic7 system is powered up it sounds nice. However, if it gets any worse it will become a problem.

As always, sharing of the infinite wisdom of the forum dwellers is greatly appreciated.

[ctuna]

Hows your battery ?
Check connections to amp.
Run a scan with a BMW scanner
Your Ibs system might be doing its voodoo if
your battery is low.
Read first pdf about ibs.

electical e90 pdf
http://www.google.com/url?sa=t&rct=j...,d.cGU&cad=rja
http://www.google.com/url?sa=t&rct=j...85464276,d.cGU
http://www.google.com/url?sa=t&rct=j...85464276,d.cGU

[BlindWolf187]

HOOOLY smokes. I'm saving those PDFs onto every electronic device that I have. By the time that my car is 10 or 12 years old, I'll probably just print them out and use them as a pillow.
That's enough information to keep be busy for days! Thanks for the links!

I will check the battery tomorrow and let you know what I find. A low battery would be the best problem to have. I was just looking to all the Logic7 amp issues and repair procedures/costs, and I want nothing to do with any of it

[BlindWolf187]

Here's what I've found out:

Fault Codes: The car does not have any faults stored (I used a Bluetooth OBDII scanner, not a specialized BMW scanner).

Amp Harness: The Logic 7 amp harness connector seems to be seated snugly. I intend to remove that connector and inspect for loose pins this weekend.

The battery voltages are:
Car off: 12.25V - 12.36V
Under load (cranking the starter): 11.9V
Car on: ~14.1V

IBS: I do not like it, and I wish it weren't a thing.

MOST BUS: When I saw my car had Logic 7, I was happy. Now that I know that comes with a proprietary optical communication interface, I am not happy.

[ctuna]

Those voltages are pretty good.
Try reseating the connectors to the amp.

[BlindWolf187]

Originally Posted by ctuna

Those voltages are pretty good.
Try reseating the connectors to the amp.

I found the issue! It is the 3.5mm input in the center console. Or it's the 3.5mm output of the annoying iPod Y cable. It hard to tell because sometimes you can jiggle it and it crackles and pops and speakers cut out, and sometimes you can jiggle it and nothing happens at all. It also seems like the Y cable 30 pin connector that goes into the ipod is a finicky piece of crap too.

I guess I'll go ahead and replace the Y cable and then the 3.5 mm input if needed, hopefully that takes car of it

If were a clever man, I would have tried different forms of media before entering panic mode about replacing a $1500 amp... but I'm not.

Thanks for your assistance anyway. At least now I know the status of my amp connector and battery!