failed mot

demitrious1973 · Nov 2, 2009

I there my landy went for its mot to day and failed on the abs

the problem
when you start the landy the abs light comes on and stays on, and when you break you have to cross your fingers and hope it stops. does anyone have any ideas why this is happening and what the possable problems are I have been told that there is a abs ecu on the 3.9 v8 discovery 300 model

andyb66 · Nov 2, 2009

Check the sensors and the ABS relay first.

Search the Discovery forum there has been a lot of people with similar problems.

Mark Disco · Nov 2, 2009

mine kept throwing up a n/s/f ABS sensor fault. gave the wheel the shake test and all the bearings were ok so planned in a new ABS sensor. when i did the seals last weekend i noticed that the stub axle needle roller bearing was knackered. replaced that bearing this weekend and the ABS has been perfect ever since.

first thing i would do is get the paperclip test done - there is more info somewhere on here but basically you use a paperclip or a piece of wire to bridge 2 pins on your diagnostic plug and this flashes fault codes through the ABS light on the dash. this will tell you where the fault is and you can investigate further from there

lerk · Nov 3, 2009

demitrious1973 said:
when you start the landy the abs light comes on and stays on, and when you break you have to cross your fingers and hope it stops.

And you waited for the MOT man to tell you before doing anything about it??? :doh:

kernowdragon · Nov 3, 2009

Simple rule for ABS and MOT's... if the car has ABS it must work! no matter how well the car stops without it, it will fail, so there's no point trying to bung it through and hoping.

Any ECU is only as good as the info it receives so as previous posters have said work your way through fuses, relays and sensors first, no point leaping to the most expensive option first.

discool · Nov 3, 2009

lerk said:
And you waited for the MOT man to tell you before doing anything about it??? :doh:

Not the first owner according to the various forums I read, even with simple faults such as a side light being out or an iffy wiper blade

lerk · Nov 3, 2009

discool said:
Not the first owner according to the various forums I read, even with simple faults such as a side light being out or an iffy wiper blade

Used to that sort of thing but the brakes not working in the way described in the OP!

nathan5346 · Nov 3, 2009

discool said:
Not the first owner according to the various forums I read, even with simple faults such as a side light being out or an iffy wiper blade

No surprise there but anyone who knows theres a problem with the brakes 'hope they stop' has to be a nutter

failed mot

demitrious1973

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andyb66

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Mark Disco

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lerk

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kernowdragon

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discool

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lerk

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nathan5346

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