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Ali's Dad
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229 Posts
Discussion Starter #1
As the title says - test drove the bug tonight after installing new Osram H1s. They are miles better than the stock H1s. However, while motoring along I lowered the drivers window and noticed the lights dimmed, when i hit the switch again they dimmed. My daughter hit her switch (passenger side) and same thing.

I scanned the car with my torque app and found no codes.

So is this a possible alternator or battery issue? Or both?
 

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4,271 Posts
Or neither. Could just be because the power windows draw a bit of power which causes the lights to dim momentarily. I wouldn't worry just yet unless you have other issues.
Did this happen when you were driving or at idle?
 

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Ali's Dad
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229 Posts
Discussion Starter #3
Driving, testing out the new Osram's to be sure the daughter had sufficient light going into the darkness of winter - and they work great.
 

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Mine has done that for the past 10 years. Original alternator still. I think it's supposed to be like that, not a big deal.
99,2.0,156k miles
I've changed the battery once since I've had it about 5 years ago.
Sent from my ZTE-Z990G using AutoGuide.Com Free App
 
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