Hi all i'm having some problems with my sisters Fabia VRS, the ABS lights and ASR light comes on when ever you get over 30 mph and while the lights off the ABS does not work. If you stop the car and restart the lights go off as normal untill you reach 30mph where they come back on again.

Now say you keep the speed below 30 then both lights stay off but if you lightly touch the brakes you can feel the ABS pulsing back through the pedel, its not a warped disc pulsing its as if the pedel is fractionally disengaging from the brakes and creates a ticking sound while doing so.

I've notice that if you let the car pull itself along just above idle and slightly touch the brakes until the pulsing occurs the lights dim down in sequence with the pulsing, which to me points to some sort of solinoid or relay switching off and on? Also while keeping the car below 30 and thus keeping the ABS and ASR lights off the ABS works as it should when you stand on the anchors.....any thoughts? I think it must be some sort of electrical fault with the ABS system but i have no experiences with Skoda's, i'm an old ford man and that usually involes fixing things with a hammer

Thanks for your help

ABS sensor? or maybe even earthing???

the hydraulic unit, theres pressure sensors inside they are known to fail on bmw's not sure on skodas

ABS sensor, my light is on aswell. Ive had to replace one before, need to plug into a computer to tell you which one is faulty.

Marty

Check all tyres are the same profile.

As for the ASR light, mine comes on after 10 mins of driving due to the load signal wire going to the gearbox.

Not sure if its the same for the speed issue but worth a look maybe?

the hydraulic unit, theres pressure sensors inside they are known to fail on bmw's not sure on skodas

Nope - Teves Mk60 only affects the following:

VW Golf MkV, MkV Plus or Touran; Seat Altea, Leon or Toledo; Skoda Octavia; Audi A3, BMW 1- or 3-series; Volvo S40/V50; Mazda3.

I can see this ESP fault going the same way as it being essential to change the waterpump every time you get the cambelt done, even if you don't have a car with the 1.8T engine that it was affected by it!

Back to the query - I'd double-check the tyre profiles as above, then get a scan done for ABS sensor faults if all the tyres are the same.

HTH