Its not the brake Bias valve its the zeon headlight adjuster.Karlos69 said:
Yep it adjusts the light as when the car has weight in the book the rear axle adjusts the sensor and the car then adjusts its headlight not to dazle oncomming cars.Karlos69 said:Ahhh. I thought it would be one or the other. So it's for the lights? Well I put a small screw and a washer in as a replacement fot the meantime and that seems to be working ok, but I'd like to get it replaced!