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Hi guys,

I recently had xenon HID bulbs installed on my headlights and fog lamps on my 03 cayenne (v6). The problem is every time i switch on the headlights, the yellow exclamation point warning signal lights up, and the warning display reads: "headlights dipped low". The second problem is every time i switch on the fog lamps, the same warning signal lights up. What should i do with this problem? should i just revert to the stock bulbs? Thanks in advance guys, peace. :renntech:

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You'd get those warnings because the control unit is reading the voltage across the bulbs as per normal but not getting back the expected values and hence assuming that they have blown.

You need to get the correct ballast resistors to put into the circuit to adjust the readings and fool the CU into thinking stock bulbs are used. Any competent auto electrician shouldb e able to advise you accordingly.


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Just done the upgrade myself, problem is the HID ballast is only 35 Watt, normal bulbs are 50 Watt, the systems measures the current in the light circuit and is expecting to see 4 Amps, but with the HID Ballast it only sees 3 amps. Solution add a 10 Ohm 20 Watt resistor this bumps the load up to 49 Watts and hence the car thinks all is hunky dory.

The techi bit

Circuit Volts______Current(A)_______Resistance_______Power(W)

____12____________4.166___________2.88____________50________Standard Bulb

____12____________2.91____________4.11____________35________HID Ballast

____________Add a resistor in parallel 10.0

____12____________4.12____________2.91____________49________HID Ballast + 10 Ohm Resistor

Hope this helps, and remember the resistor will have to loose 14W of energy in the form of heat, so position in a safe place


Edited by Jaybee52
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  • 4 weeks later...
  • 2 weeks later...

I bought a kit at 8000K, very nice. The whole kit fits inside if the light unit so no leaking gromets. I do not get any alarms on the dash, but I did up the fuse to 20a to cover startup load.

Wish I had done it years ago.

That will fix!

HID Anti Flicker Capacitor:


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