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How I installed Bixenon headlamps on my Volkswagen Polo TSI

19th March 2025, 10:32 by Deepankar Sadekar

The AFS sensor sits on the rear axle, and the wire passes under the rear seat bench. Naturally, the wiring plug is weatherproof and has a rubber boot.

BHPian fluidicjoy recently shared this with other enthusiasts:

I had installed OEM Bi-xenon headlights in our Polo, and I already have a dedicated post with information to all the parts and headlights modules. Here it is. However that time, in the interest of time, I had not wired these as optimally as they should be. The short-cut method ensured full-functionality, but was not BCM controlled. With a BCM Max, the Bi-xenons can unlock a whole new level of functionality.

For OEM Bi-Xenon wiring, the first task was to shift the Cornering Fog-lights to the Bi-Xenon headlight assembly, and to wire the standard Fog-lights as Fog-lights which would be controlled by the switch.

Since a new wiring loom had to be created for this independent fog-light, I thoroughly tested the wiring and had it wired to a standalone fuse in the fusebox.

Next, the Bi-xenon headlights were wired to the proper T10 to T14 adapter, with inputs to the BCM for controlling the DRLs and cornering lights. Again, Prerak and Hrithik helped me wire in the last few connections to the BCM since they were a lot more flexible than I was back then

AFS Wiring Connector
A new AFS module was being installed, and the location was decided to be behind the passenger glovebox. The module latches onto such a bracket.

The T32 connector was assembled to connect the AFS Module.

The AFS sensor sits on the rear axle, and the wire passes under the rear seat bench. Naturally, the wiring plug is weatherproof and has a rubber boot.

This is the existing brake tubing, which will see a small update when the rear-axle sensor is installed.

Till the AFS module is calibrated and connected properly, I was greeted by this error. Moreover, the LED Headlight module does not work with the Bi-Xenon headlight, this was a new discovery.