ABS warning intermitent

[james]

hello all its mot time next week for my t5 estate and since ive had it '8 months' the ABS warning light has been intermitent.sometimes it dosnt come on for weeks and it looks like pot luck for mot weather its on/off.

i have checked the cars diognostic box under bonnet and have codes 141 142 brake pedal position sensor , ive checked the connection but was wondering if the wire to it was knackered as its bent back on itself.

anybody have any advice many thanks james

[gareth]

Hi,
It's probably "dry" solder joints on the ABS board. Both my 855's suffered from it.
If you're handy with a soldering iron it's easy enough or failing that Wobbly Dave will be able to sort it for you.
Search on these forums for Wobbly Dave ABS repair.

[james]

change the brake pedal sensor it worked for my intermittent ABS light

[850 2.5 10v]

First up change the ignition barrel - if you wiggle it sometimes the ABS light goes out.

Mine did this until I replaced it.

Much later the ABS light then came on permanently.

Did mine on exchange with Russ at RT and been fine ever since - touches wood!

Bit fiddly to remove and refit the ABS module - make sure and use the right hex (I think it was a hex)

Member 'Wobbly Dave' is also your man for this IIRC.

There is 'how to' somewhere around the forum too.

Hope that helps.

Cheers

[T5ER]

it is hex/torx i cant remember exactly 6 of them job done, make sure you get the right one though so double check the part no`s

[Mental Wealth Doctor]

it is hex/torx i cant remember exactly 6 of them job done, make sure you get the right one though so double check the part no`s

pretty sure its 4 and there 5mm and quite awkward to get at

[Jod T5]

pretty sure its 4 and there 5mm and quite awkward to get at

it is 4 and a E5 female socket is needed...
Anything else may round off the heads....

Jod

[cameron]

What Jod said and its a 5 minute job to change the ecu's over if you have another one :D

Soldering would take longer obviously, i'll let you know when ive done mine.

This Link (http://www.freewebs.com/dacvolvo/absrepair.htm) is for a V70 but exactly the same once you get past the fuse box ;)

[pigfight]

hi folks,
ive just had my abs module resoldered because my abs/tracs lights were constantly on, once fitted, the lights went out for a few hours, back on for a few more, off again, and now seem to be permanantly back on!
has any one any ideas? all the sensor seem fine, could it simply be a fuse or relay somewhere? not checked the brake pedal sensor though, where is it actually located? (that question sounds soo dumb!!)
cheers,
david.

[T5ER]

had this problem on my mums T5 all sensors replaced, ecu, abs pump, turned out to be a break in the wire in the loom that went to the abs ecu

[pigfight]

cheers t5er,
did she have to get a new loom? or is it fixable?

[T5ER]

it was fixed mate was a break in the wire, could leave it running for 2 hours no light, drive a mile if that down the road would come on,then off then on lol took 8 weeks to find the problem and get it fixed plus £600

[pigfight]

was it just a case of finding the wire, resoldering and taping up? or a job for a sparky?