Changing headlights: 2 questions

elzorro4 · 04-20-2016, 04:26 PM

A couple of days ago BMW changed both of my headlights under warranty. I have 2 issues I would like to know your opinion:

1- The day was rainy and as soon as I arrived home with my new headlamps I realized there was condensation inside both headlamps...
I took it again and they said it should dissapear in a couple of days because of the heat...
I dont understand, if its sealed, how would this happen... if there is water inside heat would evaporate it but under cold weather water will appear again...

2- I think the lights are aiming shorter than before. Is this possible? dont they align automatically?

Thanks

EINS · 04-20-2016, 09:59 PM

Humidity can exist in our head lamps. They are made of plastic and even though they are sealed with vents the plastics will still absorb moisture. The condensation will go away in a few days.

What is automatic on our cars is a leveling feature but the aim must be set when new head lamps are installed. If you believe they are aimed low the dealership needs to re-aim them.

dm874 · 04-21-2016, 08:48 AM

Also, make sure that the rear black plastic cover on the headlight is properly seated. If it is not, there will be condensation.

04-20-2016, 04:26 PM	#1
elzorro4 Private First Class 20 Rep 116 Posts Drives: 135i Join Date: Oct 2014 Location: Argentina iTrader: (0)	Changing headlights: 2 questions A couple of days ago BMW changed both of my headlights under warranty. I have 2 issues I would like to know your opinion: 1- The day was rainy and as soon as I arrived home with my new headlamps I realized there was condensation inside both headlamps... I took it again and they said it should dissapear in a couple of days because of the heat... I dont understand, if its sealed, how would this happen... if there is water inside heat would evaporate it but under cold weather water will appear again... 2- I think the lights are aiming shorter than before. Is this possible? dont they align automatically? Thanks
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04-20-2016, 09:59 PM	#2
EINS Simply One Great Car! 12 Rep 124 Posts Drives: 135i SGM Coupe Join Date: May 2008 Location: Commerce Township, MI iTrader: (0) Garage List 2008 E82 / 135i [0.00]	Humidity can exist in our head lamps. They are made of plastic and even though they are sealed with vents the plastics will still absorb moisture. The condensation will go away in a few days. What is automatic on our cars is a leveling feature but the aim must be set when new head lamps are installed. If you believe they are aimed low the dealership needs to re-aim them. __________________ '08 135i SGM Coupe delivered in Munich, Nürburgring tested
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04-21-2016, 08:48 AM	#3
dm874 Lieutenant 84 Rep 501 Posts Drives: 15' M4 Join Date: Jul 2014 Location: Bucks County,PA iTrader: (0)	Also, make sure that the rear black plastic cover on the headlight is properly seated. If it is not, there will be condensation.
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