Hello

Are the headlight wiring diagrams available online? Or is there a Haynes manual for the Mk2 showing the wiring?

My 2008 recently failed its MoT because the manual dipped beam height adjusters failed. The garage replace the OEM headlights with pattern parts and passed the car.

However, ever since, the blue main beam indicator in the dash doesn't illuminate. The lights switch between main and dipped beam okay on the stalk (it passed the MoT) but no dashboard indicator. It also doesn't show for flash.

It seems a bit coincidental that the indicator stopped working after the lights were replaced. I suppose the dashboard bulb could have blown, or are the pattern lights missing a feeback loop for the indicator?

Thanks for any suggestions or pointers to the wiring diagrams.

Sterling

The blue telltale is an LED, so much less likely to have failed than a conventional bulb.

Circuits for any Skoda model can be downloaded for a small fee via erWin Skoda.

If you search for that word pair you can probably find several threads discussing the details of how to do this.

 

Thank you. I'll sign up.

Hi Pete

I signed up and have downloaded the wiring diagram. I can see that the K1 - Main beam warning light gets fed through N396 - Right headlight screen adjustment magnet.

Any idea what this is? The lights were replaced due to the manual level adjusters not working. Why would the indicator bulb take its feed through an "adjustment magnet"?

Hmm,  I  guess it must be because M31 is always on when headlights are on, but becomes full beam when that magnet is energised and moves stuff?

Nasty looking arrangement; not one I've seen.

 

Do the aftermarket replacement lights have same gubbins?

Edited 17 November, 20232 yr by Breezy_Pete

(The car is miles away from me so I can't check!) I think I know what you mean. When the high beam is selected, a mechnical screen covers the dipped beam- is that what happens?

My nephew told me that the high beam does work okay, but perhaps the dipped beam is being covered and therefore the magnet fails and therefore no warning light.

I'd guess that it's more like this. 

Dipped beam on - (upper) part of M31's light beam obscured by screen/shutter. 

Full beam on - shutter moves out of the way.

 

I'm guessing though.

 

 

On 17/11/2023 at 21:07, Breezy_Pete said:

I'd guess that it's more like this. 

Dipped beam on - (upper) part of M31's light beam obscured by screen/shutter. 

Full beam on - shutter moves out of the way.

 

I'm guessing though.

 

 

 

exactly how they work, this is how the projector headlamps work.

 

What headlamps did they fit ? was not aware of this type of headlamp was fitted back in 2008 ?

My 2009 has projector headlamps.

I never noted the style of the OEM lights, but my newphew reports a conventional halogen bulb with two filaments. If the harness is set up for projectors and shutters, this would explain why the blue indicator no longer works!

 

I suppose I will need to find the wire from the Right headlight screen adjustment magnet and connect it to the high beam wire and it might just work.

I managed to spend some time with the car on Wednesday. I bought a previously owned dashboard on eBay. When I plugged it in and tested the headlamp dip/high beam, the blue HB light works as expected. So, the fault is definitely in the dashboard, not at the lights.

However, with the new dashboard connected, the immobiliser doesn't work and the milage is for the donor car (49k), not the actual car (23k).

Is there a method of coding the new car to accept the new dashboard, accept the original immobiliser and display the correct mileage?

Thank you.

You need some fairly specialised hardware and software to reflash the cluster firmware to match the car it's going into. It's not a simple matter of changing coding.

 

Have you verified that the replacement headlights are sending the correct signal to the cluster, on the correct pin? There's a possibility that the wiring pinouts and clusters are different between the projector and reflector headlamps and this could be why your second cluster is working. You could also try applying 12 V to the pin for the indicator lamp on the original cluster and see if it lights up.

Thanks, chimaera- specialised hardware and software I don't have!

I take your point about different dashboards for different headlamps.

The SKU for the original dash is 5J0920 900B (04.04.08), whereas the previously owned dash is 5J0920 910B (19.12.07)

 

According to the build sheet, the headlamp-related options were:

8K0 Without special headlight control

8Q1 Headlight range control (this is what failed)

8X0 Without headlamp washer system

8JK Ellipsoidal main headlamps for left-hand traffic

 

No mention of projectors. I will have to wait until I can have access to the car again and try applying 12V to T32a on the dash...