MOT Rules re dashboard lights.

Not quite - as someone else mentioned some ABS systems are designed to take the responsibility of the function of the (non-fitted) mechanical front/rear proportioning valve. No ABS = no proportioning with the potential for rear-end skidding.

Mathew

Given it would not pass an MOT in that state (i.e. test light would not follow the correct sequence to confirm operation) I presume it would invalidate the insurance given the obligation to keep the vehicle roadworthy?

I am assuming that a failed MOT test = unroadworthy (in the technical/legal definition sense)? If not then who knows - ask the insurers! Indeed, if they don't mind they there's no harm in informing them beforehand anyway.

Mathew

There speaks a man who's never had to deal with an insurance company before...

Do your insurers know? What was their take?

Mathew

Here we go again!

To be fair, if you can't handle a rear end slide, you shouldn't be driving.

Hellraiser..............>

Cobblers. If whatever drives the light, whether it be electronic or electromechanical, fails in the On position (so a jammed shut relay or a transistor that fails open circuit - both perfectly possible), then you have a light that's on regardless of the state of the ABS.

We do? I was under the impression that the accepted legal test for whether a car is roadworthy or not, for the purposes of a sale, is ability to pass the MoT?

In that case probably about 90% of the drivers on the road shouldn't be driving.

You've obviously never read the back of an MOT certificate then.

'whatever drives the light' is part of the ABS system, if it has failed, then there is a fault in the ABS system.

Sounds about right...

Chris

Yawn...

You don't half spout some bollocks.

Whereas you on the other hand provide some well-reasoned argument. Is it better for people to know how to handle a car rather than rely on electronic wizardry to do it for them? I reckon it is, but being a halfwit you probably disagree.

Hellraiser..............>

Front/rear proportioning is not wizardry, it's a nigh on fundamental requirement with an 'all-in-one' (for want of a better phrase) braking system.

Quit whilst you're not too far behind.

Just stick a paving slab or two in the boot, Capri-style and you'll be alright :)

Hellraiser...........>

Vim Fuego ( snipped-for-privacy@fastmail.fm) gurgled happily, sounding much like they were saying :

That'll be the ABS ECU, then.

SimonJ ( snipped-for-privacy@mine.net) gurgled happily, sounding much like they were saying :

And in other news - night follows day.

& to be honest most of the 10% who've learnt how to slide the back of a car out are in the 90% who shouldn't be allowed out.

No doubt, but my point is, it is perfectly possible for the bit that purely exists to drive the warning light to fail in the On position - leaving you with a 100% functionally perfect ABS braking system, but a warning light on.