Flickering HID Issue

scythe1969 · 06-12-2008, 12:42 AM

I've owned my S4 for about 6 weeks now. Recently I've noticed that the left HID headlamp is occasionally flickering... I'm wondering if this is a problem with the system or if its just the bulb? If its the bulb, should I replace them both at the same time? I've heard that the system shares current across both sides so I just want to make sure that I fix this 'once'. Lastly, I've taken a cursory glance at the units in the engine bay and it doesn't look like it's an easy thing to replace the bulbs. Is this something I can tackle myself without too much hassle or is it something better left for a mechanic/dealer?

Any input would be greatly appreciated.

mrbagoda · 06-12-2008, 06:22 AM

Hey--I had the same issue with my oem HID's. Before you know it, the other side will probably start to flicker. I changed the bulbs and then the flickering stopped.....For about 4 months, and now they are flickering again, and last night the drivers side blew out for good. I dont understand it---Maybe the bulbs I got were cheapies????

tru2hapi · 06-29-2008, 07:26 PM

Quote:

Originally Posted by scythe1969

I've owned my S4 for about 6 weeks now. Recently I've noticed that the left HID headlamp is occasionally flickering... I'm wondering if this is a problem with the system or if its just the bulb? If its the bulb, should I replace them both at the same time? I've heard that the system shares current across both sides so I just want to make sure that I fix this 'once'. Lastly, I've taken a cursory glance at the units in the engine bay and it doesn't look like it's an easy thing to replace the bulbs. Is this something I can tackle myself without too much hassle or is it something better left for a mechanic/dealer?

Any input would be greatly appreciated.

I had the same problem, i took it to Audi and they informed me that was indeed a problem. Its on the "audi tech forums" .... anyways they ordered me a replacement part for something and it works fine now.

RJKflyer · 07-03-2008, 09:58 AM

There is a 'driver' unit which supplies the HV to the bulbs - it's often that that plays up. So replacing the bulbs ad infinitum might not be the answer.

06-12-2008, 12:42 AM	#1 (permalink)
scythe1969 Newbie Join Date: May 2008 Posts: 2 Gallery: (0)	Flickering HID Issue I've owned my S4 for about 6 weeks now. Recently I've noticed that the left HID headlamp is occasionally flickering... I'm wondering if this is a problem with the system or if its just the bulb? If its the bulb, should I replace them both at the same time? I've heard that the system shares current across both sides so I just want to make sure that I fix this 'once'. Lastly, I've taken a cursory glance at the units in the engine bay and it doesn't look like it's an easy thing to replace the bulbs. Is this something I can tackle myself without too much hassle or is it something better left for a mechanic/dealer? Any input would be greatly appreciated.

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06-12-2008, 06:22 AM	#2 (permalink)
mrbagoda Newbie Join Date: Jun 2008 Location: Narragansett, RI Posts: 2 Gallery: (0)	Hey--I had the same issue with my oem HID's. Before you know it, the other side will probably start to flicker. I changed the bulbs and then the flickering stopped.....For about 4 months, and now they are flickering again, and last night the drivers side blew out for good. I dont understand it---Maybe the bulbs I got were cheapies????

07-03-2008, 09:58 AM	#4 (permalink)
RJKflyer Member Join Date: Sep 2007 Posts: 38 Gallery: (0)	There is a 'driver' unit which supplies the HV to the bulbs - it's often that that plays up. So replacing the bulbs ad infinitum might not be the answer.

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