Afternoon all,


I have been a long-time lurker, and I finally have an issue I can post about. My glow plug warning light started flashing a few days ago and through some research, it appears to be related to the brake light switch. 
The vehicle is a 2006 skoda fabia mk1 1.4l diesel

So I bought this BLS and followed this guide to fit it. The problem is that before fitting the new part, the brake lights worked normally and now they're stuck on permanently.
When I fitted the new BLS the rear brake lights stayed on permanently (unless disconnected ofc). I refitted the original part and now the lights stay on permanently.

I did notice that when fitting the BLS the plunger didn't meet the brake pedal, I couldn't find any info online about extending the plunger or anything similar. Did I get a duff BLS?

Greatly appreciate any help!

If the plunger should extend as the brake pedal is pushed then the new one was either not long enough or incorrectly fitted/adjusted, my guess is the latter given that the original one now exhibits the same fault.

 

Did you extend the plunger(s) before fitting?

 

Were there any problems refitting the connector?

13 minutes ago, J.R. said:

If the plunger should extend as the brake pedal is pushed then the new one was either not long enough or incorrectly fitted/adjusted, my guess is the latter given that the original one now exhibits the same fault.

 

Did you extend the plunger(s) before fitting?

 

Were there any problems refitting the connector?

I did not extend the plungers, I’m not sure on how to adjust the plungers, other than just pulling them out. Should the plunger be fully depressed against the brake pedal? 

 

no, the connectors slotted in fine. 
 

thanks for your help

Yes, pull them out against a clicky type ratcheting action, the same should happen when you fit the unit (assuming the plunger is long enough) leaving the pushrod touching the pedal with the contacts closed (if NC type) with the pedal in the upper position, there should be no gap, its not a case of it being fully depressed but that it will extend and break/make the contacts when the pedal is pressed a couple of inches.

I have the same problem, flashing coil light intermittently, advised brake light switch a likely culprit, changed it and now with both old and new the brake lights stay on constantly. What was the solution.

? Car showing no fault codes either!