Help - Light System Failure Warning after battery replaced

zed512 · 08-14-2014, 07:18 PM

I thought I was doing myself by replacing the battery myself. But of course now things are f'up.

Battery has same spec, i registered the battery, car can start but won't move due to a "lighting system failure" warning. Electric windows don't work either.

Radio, front head lights go on etc... it just seems that the lighting system failure is preventing the car from operating properly.

Thoughts?

KrazyM3 · 08-15-2014, 01:13 AM

Unplug the battery for about 30 minutes and see if that helps.

zed512 · 08-15-2014, 07:48 AM

I disconnected the battery, checked all the cables and reinstalled and still no change, light system failure fault (car up on jacks indicator)

I will disconnect the battery and let it sit for longer.

Getting worried now... Is there a common controller module for windows, side, interior and rear lights?

zed512 · 08-15-2014, 10:47 AM

Old battery re-installed, all glove box fuses checked and I still get the following:

- Lighting System Failure (Car up on Jacks symbol)
- No interior lights work apart from glove box and trunk
- No rear or side lights or halos
- Front lights, radio, seats dash etc work ok
- Engine starts fine

My only thought is I had the battery disconnected for 1.5hrs during the first install and its cleared some module settings.

Any other fuses I should check?

BPMSport · 08-15-2014, 04:38 PM

Quote:

Originally Posted by zed512

Old battery re-installed, all glove box fuses checked and I still get the following:

- Lighting System Failure (Car up on Jacks symbol)
- No interior lights work apart from glove box and trunk
- No rear or side lights or halos
- Front lights, radio, seats dash etc work ok
- Engine starts fine

My only thought is I had the battery disconnected for 1.5hrs during the first install and its cleared some module settings.

Any other fuses I should check?

If all the fuses and connections are ok (grounds, etc..) it's likely a faulty footwell module.

zed512 · 08-15-2014, 05:03 PM

Thanks Mike,
Any other fuses I should check apart from the glovebox fuses?
Does the footwell module control the electric windows and side mirrors also?
Last question would it do any harm to unplug and plug the module back in?

08-14-2014, 07:18 PM	#1
zed512 Private First Class 64 Rep 102 Posts Drives: F80 M3 Comp Join Date: Mar 2011 Location: Austin, Texas iTrader: (0) Garage List g80 M3 [0.00]	Help - Light System Failure Warning after battery replaced I thought I was doing myself by replacing the battery myself. But of course now things are f'up. Battery has same spec, i registered the battery, car can start but won't move due to a "lighting system failure" warning. Electric windows don't work either. Radio, front head lights go on etc... it just seems that the lighting system failure is preventing the car from operating properly. Thoughts?
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08-15-2014, 01:13 AM	#2
KrazyM3 Enlisted Member 3 Rep 38 Posts Drives: 2008 AW M3 Join Date: Jan 2009 Location: Bay Area, CA iTrader: (1)	Unplug the battery for about 30 minutes and see if that helps.
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08-15-2014, 07:48 AM	#3
zed512 Private First Class 64 Rep 102 Posts Drives: F80 M3 Comp Join Date: Mar 2011 Location: Austin, Texas iTrader: (0) Garage List g80 M3 [0.00]	I disconnected the battery, checked all the cables and reinstalled and still no change, light system failure fault (car up on jacks indicator) I will disconnect the battery and let it sit for longer. Getting worried now... Is there a common controller module for windows, side, interior and rear lights? Last edited by zed512; 08-19-2014 at 08:50 AM..
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08-15-2014, 10:47 AM	#4
zed512 Private First Class 64 Rep 102 Posts Drives: F80 M3 Comp Join Date: Mar 2011 Location: Austin, Texas iTrader: (0) Garage List g80 M3 [0.00]	Old battery re-installed, all glove box fuses checked and I still get the following: - Lighting System Failure (Car up on Jacks symbol) - No interior lights work apart from glove box and trunk - No rear or side lights or halos - Front lights, radio, seats dash etc work ok - Engine starts fine My only thought is I had the battery disconnected for 1.5hrs during the first install and its cleared some module settings. Any other fuses I should check?
	Appreciate 0 Quote

08-15-2014, 05:03 PM	#6
zed512 Private First Class 64 Rep 102 Posts Drives: F80 M3 Comp Join Date: Mar 2011 Location: Austin, Texas iTrader: (0) Garage List g80 M3 [0.00]	Thanks Mike, Any other fuses I should check apart from the glovebox fuses? Does the footwell module control the electric windows and side mirrors also? Last question would it do any harm to unplug and plug the module back in?
	Appreciate 0 Quote