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Litronic HID Headlight Problem


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About six months ago I upgraded to a brand new set of litronics (the complete HID upgrade kit for a 1999 C4). About a week ago my right light began to give me problems. When I turn the lights on, it would ignite for about 2-3 seconds and than go off. Several days later it stopped igniting at all. I tried swapping the bulbs, cleaning all connectors, checked for loose pins etc, but could not get it to work. My next guess would be either the control unit - 993.631.193.02 or the ignition control unit 996.631.195.01, but I am not sure how to determine which one is bad. I looked at my manual but could not find a way to test either one. Any suggestions will be appreciated.

Also, where would be the best place be to purchase these?

Edited by ivass
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About six months ago I upgraded to a brand new set of litronics (the complete HID upgrade kit for a 1999 C4). About a week ago my right light began to give me problems. When I turn the lights on, it would ignite for about 2-3 seconds and than go off. Several days later it stopped igniting at all. I tried swapping the bulbs, cleaning all connectors, checked for loose pins etc, but could not get it to work. My next guess would be either the control unit - 993.631.193.02 or the ignition control unit 996.631.195.01, but I am not sure how to determine which one is bad. I looked at my manual but could not find a way to test either one. Any suggestions will be appreciated.

Also, where would be the best place be to purchase these?

Those controllers are the same from left side to right side so you should be able to swap them to see which is bad.

I would try Sunset Imports (Porsche Parts at Dealer Cost) - they are usually have the best prices (IMHO).

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That blows. I guess that is the problem you have when buying used. Didn't realize there was a market for these used since i have never heard of anybody downgrading to standard lights.

By the way, when you say upgrade "kit" are you talking about the FACTORY OEM LITRONICS ASSEMBLIES? In otherwords, slide out the entire out light assembly and slide in the new one? Or are you talking about some aftermarket kit that tries to duplicate the zenon lights?

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That blows. I guess that is the problem you have when buying used. Didn't realize there was a market for these used since i have never heard of anybody downgrading to standard lights.

By the way, when you say upgrade "kit" are you talking about the FACTORY OEM LITRONICS ASSEMBLIES? In otherwords, slide out the entire out light assembly and slide in the new one? Or are you talking about some aftermarket kit that tries to duplicate the zenon lights?

They weren't used. I got a new set of two complete headlight assemblies plus the wiring harness and the controller for the hight adjustment. However, I got them on ebay so there is no 2 year warranty.

I switched the controller and the igniter around last night and it seams that the problem is in the controller. I will order it today.

Thank you

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