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JDrew 12-08-2011 07:46 PM

Headlight Flicker 2012
I've noticed at night that my headlights have a random quick flicker like a voltage jump or dropout that happens very quickly and randomly. I don't have aftermarket HID's or done any type of HID conversion. I've tried switching bulbs to some sylvania's and it still happens..

You have to be in a dark area to see it well and look at the ground just in front of the hood or behind something that's light colored. I really notice it on my garage door and behind white vehicles..

At first, I thought my mind/eyes were acting up but tonight, my wife see's it and she's very unobservant.

Anyone else notice this or know what it might be?

jp467 12-09-2011 02:12 AM

Re: Headlight Flicker 2012
This can indicate a bad alternator if its a constant flicker. Its doing that because the voltage is not constant.

JDrew 12-09-2011 02:32 AM

Re: Headlight Flicker 2012
I was thinking that too.. We've all seen some older cars at night do this.. Those seem to be a more steady "in time' pulse. This is more sporadic with no rhythm. I have to take our Charger in to the dealership for the dreaded door handle replacement, so I'll check with them.. Thanks!

JDrew 12-10-2011 02:54 AM

Re: Headlight Flicker 2012
Just and update: Took it into the dealership and after a couple of hours, I was told it was a "normal condition". Even though there were "stored codes" for both low-beams and the driver side high-beam...

brandont 12-10-2011 07:49 AM

Take it to another dealer.

JeeponDUBS 02-23-2012 08:33 PM

Re: Headlight Flicker 2012
Was wondering if you got the flicker issue corrected. I have a 2011 WK2 and I had the same problem. At on 13,766 miles the dealership just replaced the inner alternator and my headlights seem brighter and don't seem to flicker anymore like you described.

JDrew 02-23-2012 08:34 PM

Re: Headlight Flicker 2012
Couldn't tell you.. I traded it in on a Limited.. :)

SW03ES 02-25-2012 09:16 PM

Re: Headlight Flicker 2012
I have noticed the exact same thing! I thought I was nuts...

celsito 02-27-2012 10:19 PM

Re: Headlight Flicker 2012
I ordered two HID Xenon kits from amazon and installed them this weekend. My HID behaved exactly as demonstrated in this video I found in youtube:
I was so, so lost. I have a 2007 Grand Cherokee Lorado. I almost started to trash the whole thing HID kit and go back to stock. I somehow found some patience and read forums here and there and found this one which was very very helpful:
After work today, I went straight to Radio Shack and bought two 4700uF capacitors (Part#272-1022) and added it to the HID wire that connect the stock power wire to the Ballast as stated in the forum above. THE FLICKERING STOPPED COMPLETELY AND I AM SO, SO HAPPY. THANK GOD. I am here because I wanted to share my experience and hope that this can help someone with exactly the same issue. :)

P.S. I got scared about the comment made about changing the alternator. There is no way I am changing my alternator as long as my car starts and there are no check engine lights buddy. :)

JDrew 02-28-2012 01:27 AM

Re: Headlight Flicker 2012
We're talking about Halogen lights, but I've heard of your deal too when replacing them with HIDS.

celsito 02-28-2012 10:52 AM

Re: Headlight Flicker 2012
Ohh...Hahaha. That would be a different case then. Thanks.

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