headlight upgrade

yogi2703 · 08-26-2011, 11:14 AM

Hi guys,
Does anyone know if I can upgrade my 2005 640 LC4 headlight H4 bulb to a bigger wattage while still using the original wiring....

Any thoughts gladly taken on board

Werfel.gartner · 11-08-2011, 10:10 PM

You can most certainly upgrade to those OEM headlights with Adaptive Xenon, but you have to have the OEM headlights and only the dealer can program that function on your car, or unless you know someone with a full version of the BMW diagnostics computer system. The OEM headlights will run you at least 500 a piece.