Adaptive headlight failed after lowering it

aarong_m3 · 10-09-2009, 05:45 PM

After installing H&R Sport Springs...2 wks later my Adaptive headlight failed(greenlight blinking on headlight switch, warning sign on dash) Before taking it to the dealership i reinstalled the stock springs. Would lowering it cause out of warranty?

So They replaced the adaptive headlight sensor/module, headlights and it still fails from what my SA says. The car it is still at the dealership with BMW NA helping out the Shop foreman. Should i tell my SA that it was lowered or just leave it to them to figuere out?

Thanks for your 2cents worth

Lester · 10-09-2009, 06:50 PM

I would say notta.

nordique14 · 10-09-2009, 07:10 PM

The BMW performance springs also lower the car. I am not aware of any changes to the headlights when installing the performance springs and the headlights work just fine with those springs. You can check with Dan@United if you really wanted to know for sure.

xantdieselx · 10-09-2009, 07:59 PM

I believe that there is a level sensing switch that attaches from the body to the lower control arm. The computer gets a single from the sensor to determine the leveling based on suspension height. It's possible it may have been damaged in the install but is not showing any obvious signs. It's a possible cause.

As far as whether or not to say something...that's your call. It could help or hurt.

larryn · 10-10-2009, 07:50 AM

Quote:

Originally Posted by xantdieselx

I believe that there is a level sensing switch that attaches from the body to the lower control arm. The computer gets a single from the sensor to determine the leveling based on suspension height. It's possible it may have been damaged in the install but is not showing any obvious signs. It's a possible cause.

As far as whether or not to say something...that's your call. It could help or hurt.

Ding-ding-ding! Winner!

When removing the strut to install the springs, unless you took specific care to disconnect the level sensor link to the lower control arm (and took care not to bang it or when reattaching it) then it's VERY easy to break the sensor, by hyperextending the travel arm on it, by not disconnecting it, banging it, or reconnecting it wrong.

xantdieselx · 10-10-2009, 04:14 PM

Quote:

Originally Posted by larryn

Ding-ding-ding! Winner!

When removing the strut to install the springs, unless you took specific care to disconnect the level sensor link to the lower control arm (and took care not to bang it or when reattaching it) then it's VERY easy to break the sensor, by hyperextending the travel arm on it, by not disconnecting it, banging it, or reconnecting it wrong.

Lol

jeremyc74 · 10-10-2009, 08:25 PM

Quote:

Originally Posted by larryn

Ding-ding-ding! Winner!

When removing the strut to install the springs, unless you took specific care to disconnect the level sensor link to the lower control arm (and took care not to bang it or when reattaching it) then it's VERY easy to break the sensor, by hyperextending the travel arm on it, by not disconnecting it, banging it, or reconnecting it wrong.

I'm shocked that the techs are having a hard time figuring this out. That sensor would be the FIRST thing I'd look at, just because of it's location. Hitting something like a recapped tire on the interstate could easily kill it.

ichiban · 10-11-2009, 02:23 AM

just let them figure it out, you've already gone this far, they probably wont take very kindly of you telling them thsi late in the game. I doubt they know you've lowered it, or else they would've figured it out by now, so just keep quiet and they'll get there.

aarong_m3 · 10-14-2009, 02:46 PM

All fixed. Now i'm rethinking if i should put back the H&R front springs. Hmmm.

larryn · 10-14-2009, 03:22 PM

Quote:

Originally Posted by aarong_m3

All fixed. Now i'm rethinking if i should put back the H&R front springs. Hmmm.

Congrats! What was it? Busted leveling sensor?

aarong_m3 · 10-14-2009, 04:32 PM

They replaced the module(leveling sensor i guess) and reprogrammed the ECU for the lighting. I don't know why they couldn't figure that out.

xbook · 10-14-2009, 04:36 PM

Quote:

Originally Posted by aarong_m3

All fixed. Now i'm rethinking if i should put back the H&R front springs. Hmmm.

Yes you should. It looks WAY better slammed!!!

aarong_m3 · 10-15-2009, 01:31 PM

Yeah i know. I will find a time to reinstall the fronts. I just hope it doesn't go out again....just a hassle with the dealership.

10-09-2009, 05:45 PM	#1
aarong_m3 First Lieutenant 20 Rep 338 Posts Drives: 2006 BMW M5 / 1974 BMW 2002 Join Date: Mar 2008 Location: Union City, CA - Norcal iTrader: (3)	Adaptive headlight failed after lowering it After installing H&R Sport Springs...2 wks later my Adaptive headlight failed(greenlight blinking on headlight switch, warning sign on dash) Before taking it to the dealership i reinstalled the stock springs. Would lowering it cause out of warranty? So They replaced the adaptive headlight sensor/module, headlights and it still fails from what my SA says. The car it is still at the dealership with BMW NA helping out the Shop foreman. Should i tell my SA that it was lowered or just leave it to them to figuere out? Thanks for your 2cents worth __________________ 2006 BMW M5 7spd SMG/SIlverstone : 2008 BMW 135i SGM/JB2/BMS(SOLD 1/2010) : 1974 BMW 2oo2(5spd w/ 3.91LSD) : 2002 BMW M3(AW/6spd) Sold 8/07 : 2002 BMW 325i(SGM) Sold 12/07 : 1993 BMW 325i Sold 8/04
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10-09-2009, 06:50 PM	#2
Lester Brigadier General 295 Rep 3,350 Posts Drives: Join Date: Oct 2007 iTrader: (0)	I would say notta.
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10-09-2009, 07:10 PM	#3
nordique14 Major 53 Rep 1,477 Posts Drives: SGM 135i 'vert Join Date: Feb 2008 Location: Sharks Territory iTrader: (5)	The BMW performance springs also lower the car. I am not aware of any changes to the headlights when installing the performance springs and the headlights work just fine with those springs. You can check with Dan@United if you really wanted to know for sure.
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10-09-2009, 07:59 PM	#4
xantdieselx Kingslayer 411 Rep 1,479 Posts Drives: 23' M3 Base Join Date: Jun 2008 Location: SWFL iTrader: (0)	I believe that there is a level sensing switch that attaches from the body to the lower control arm. The computer gets a single from the sensor to determine the leveling based on suspension height. It's possible it may have been damaged in the install but is not showing any obvious signs. It's a possible cause. As far as whether or not to say something...that's your call. It could help or hurt. __________________ Previous Cars: 2008' 135i, 2010' 328i, 2013' 328i, 2016' M235i, 2017' X1, 2019' M240i Current Cars: 2019' X3, 2021' M3 Comp
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10-11-2009, 02:23 AM	#8
ichiban Colonel 94 Rep 2,012 Posts Drives: 08 135i Join Date: Sep 2007 Location: Bay Area, CA iTrader: (2)	just let them figure it out, you've already gone this far, they probably wont take very kindly of you telling them thsi late in the game. I doubt they know you've lowered it, or else they would've figured it out by now, so just keep quiet and they'll get there.
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10-14-2009, 02:46 PM	#9
aarong_m3 First Lieutenant 20 Rep 338 Posts Drives: 2006 BMW M5 / 1974 BMW 2002 Join Date: Mar 2008 Location: Union City, CA - Norcal iTrader: (3)	All fixed. Now i'm rethinking if i should put back the H&R front springs. Hmmm. __________________ 2006 BMW M5 7spd SMG/SIlverstone : 2008 BMW 135i SGM/JB2/BMS(SOLD 1/2010) : 1974 BMW 2oo2(5spd w/ 3.91LSD) : 2002 BMW M3(AW/6spd) Sold 8/07 : 2002 BMW 325i(SGM) Sold 12/07 : 1993 BMW 325i Sold 8/04
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10-14-2009, 04:32 PM	#11
aarong_m3 First Lieutenant 20 Rep 338 Posts Drives: 2006 BMW M5 / 1974 BMW 2002 Join Date: Mar 2008 Location: Union City, CA - Norcal iTrader: (3)	They replaced the module(leveling sensor i guess) and reprogrammed the ECU for the lighting. I don't know why they couldn't figure that out. __________________ 2006 BMW M5 7spd SMG/SIlverstone : 2008 BMW 135i SGM/JB2/BMS(SOLD 1/2010) : 1974 BMW 2oo2(5spd w/ 3.91LSD) : 2002 BMW M3(AW/6spd) Sold 8/07 : 2002 BMW 325i(SGM) Sold 12/07 : 1993 BMW 325i Sold 8/04
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10-15-2009, 01:31 PM	#13
aarong_m3 First Lieutenant 20 Rep 338 Posts Drives: 2006 BMW M5 / 1974 BMW 2002 Join Date: Mar 2008 Location: Union City, CA - Norcal iTrader: (3)	Yeah i know. I will find a time to reinstall the fronts. I just hope it doesn't go out again....just a hassle with the dealership. __________________ 2006 BMW M5 7spd SMG/SIlverstone : 2008 BMW 135i SGM/JB2/BMS(SOLD 1/2010) : 1974 BMW 2oo2(5spd w/ 3.91LSD) : 2002 BMW M3(AW/6spd) Sold 8/07 : 2002 BMW 325i(SGM) Sold 12/07 : 1993 BMW 325i Sold 8/04
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