Hey. I have an annoying problem with xenon. I retrofit my original H7 headlamps to bixenon. The problem start when I turn on the main beam/high beam. Then the right lights go out. This does not happen every time, I can switch on highbeam 100 times and problem doesn't happend. From left lamp all is well. Please help me...

Can you post up details of your bi-xenon retro fit and let us know how they're wired in.

Could you also state what coding / adaptation changes have been made to the BCM

thanks

Hid xenon ballast spec:

V_in:9-16V ( 13.2V nom.)

L_in: 3.2A nom.(6A max)

Power 45W 

 

I have Otavia II from 2006. To my rettrofit I used to original bixenon projectors from golf 7 ( valeo). The bixenon are soldered with wire of high beam. 

Nothing changed on board computer. 

What should I do in vcds ? 

:-S....they need coding to ensure the right voltage is supplied and the CANBus is aware of the lighting changes. X power is an expert he'll put you right I am sure.

My thinking is that an installation of a decent HID kit would have been a far easier (and reversible) approach as these are v much plug and play and just require coding. Id wager the Mk7 kit you have used did not come cheap?!

No Mk2 came with Bi-xenons so the car natively does not have that capability.

The car does need coding for xenon (without shutter)

This needs to be done first to see if it fixes it - it should.

:-S....they need coding to ensure the right voltage is supplied and the CANBus is aware of the lighting changes. X power is an expert he'll put you right I am sure.

My thinking is that an installation of a decent HID kit would have been a far easier (and reversible) approach as these are v much plug and play and just require coding. Id wager the Mk7 kit you have used did not come cheap?!

No Mk2 came with Bi-xenons so the car natively does not have that capability.

 

Apart from mine, apparently.

Apart from mine, apparently.

 

Your Octavia has bi-xenons, and not just xenon dipped beam?

Apart from mine, apparently.

 

As softscoop mentioned, are you sure?

 

The FL MK2 came with a dipped xenon light and a standard halogen main beam, where as bi-xenons are a single xenon light with a shutter to allow for dipped and main beam usage.

 

No Mk2 came with Bi-xenons so the car natively does not have that capability.

 

It depends what you mean by natively, the BCM in a factory equipped xenon car can certainly support them.

 

Aside from the custom headlights for the bi-xenon projector, you would need wires from C48/C49 on the BCM to each projector to move the shutters. As these are normally used for the DRL on the FL MK2 you would need to relocate them (possibly to A7/A8) and reprogram the BCM to get the DRL back and the correct shutter behaviour.

 

This is why people loose their DRL when changing byte 14, bit 3 (xenons with shutters) after adding aftermarket kits. Instead of using the DRL as DRL, it's trying to use them as xenon shutters.

 

If you do it right, it should give the proper bi-xenon behaviour where the halogen is used to flash the main beams unless the dipped beams are on. If dipped are on it will use the shutter and not activate the halogen main beams.