E90 headlamp (adaptive error light and condensation)

gti6cyl · 03-26-2016, 11:50 AM

Hi - to begin troubleshooting, should I remove the entire light assembly/housing?

If so, what's the procedure to search on the boards to help with DIY for it

Thank you in advance for the advice.

alfazrus · 03-26-2016, 05:16 PM

Usually, when there is condensation, the module on the bottom of the headlight housing is toast. At least, that was the the problem in my case.

gti6cyl · 03-30-2016, 06:47 AM

Quote:

Originally Posted by alfazrus

Usually, when there is condensation, the module on the bottom of the headlight housing is toast. At least, that was the the problem in my case.

Do you know the procedure to check on this or how to remove the assembly to check on this? Thank you.

matteblue3er · 03-30-2016, 10:15 AM

Scan faults.

There are specific faults for when the SMCII get shorted out. Search the forum for those codes. I think one is 9CBB

First fix you leak. Otherwise the module will short again. If there are no obvious cracks, it's most often a bulb door seal that has gone bad or was not installed properly.

You can buy a used module off eBay for around $100-$150. If you're lucky, it will be plug and play.

If not, you just need to default the module using NCS Expert with a profile that has manipulation turned off (granted you buy the correct module).

Buying a module that came from the same chassis (E9x), region (LHD vs RHD), and side (driver or passenger) will increase the chances of the module being plug and play.

03-26-2016, 11:50 AM	#1
gti6cyl Private 7 Rep 77 Posts Drives: 2006 BMW 330xi Join Date: Feb 2010 Location: Sudbury - Massachusetts iTrader: (0)	E90 headlamp (adaptive error light and condensation) Hi - to begin troubleshooting, should I remove the entire light assembly/housing? If so, what's the procedure to search on the boards to help with DIY for it Thank you in advance for the advice.
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03-26-2016, 05:16 PM	#2
alfazrus First Lieutenant 101 Rep 308 Posts Drives: 2006 e90 330i Join Date: Oct 2012 Location: DC iTrader: (2)	Usually, when there is condensation, the module on the bottom of the headlight housing is toast. At least, that was the the problem in my case.
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03-30-2016, 10:15 AM	#4
matteblue3er Captain 238 Rep 947 Posts Drives: Racecar Join Date: Jul 2015 Location: Philly iTrader: (0)	Scan faults. There are specific faults for when the SMCII get shorted out. Search the forum for those codes. I think one is 9CBB First fix you leak. Otherwise the module will short again. If there are no obvious cracks, it's most often a bulb door seal that has gone bad or was not installed properly. You can buy a used module off eBay for around $100-$150. If you're lucky, it will be plug and play. If not, you just need to default the module using NCS Expert with a profile that has manipulation turned off (granted you buy the correct module). Buying a module that came from the same chassis (E9x), region (LHD vs RHD), and side (driver or passenger) will increase the chances of the module being plug and play.
	Appreciate 0 Quote