Communication between the modules is defective, probably not the modules. There's no model year, so I am guessing. It could be a can-bus problem (broken wire) or water ingress in the connector of the Abs or Haldex controller.
Hi all, hope one of you guys can shed some light with my golf 2.8 v6 4motion, I have got the traction control light come on in the dash and i scanned with a shareware vagcom and it showed faults:
1. abs control module = no communication intermitent
2.all wheel drive controller(haldex) = no communication
3.drivetrain databus = fault (this has disapeared).
I have heard that if the controller for the haldex fails the car goes into fwd only but mine does not wheelspin at all still launches like a rocket, also if the abs module had gone then why not is my abs light on and my brakes dont lock either so they work fine!!! any ideas chaps?
Delboy71
Communication between the modules is defective, probably not the modules. There's no model year, so I am guessing. It could be a can-bus problem (broken wire) or water ingress in the connector of the Abs or Haldex controller.
its a 2000 x mate, bloody thing has been doing my nut in..
Fcuk up now............... ask questions later
Vagcom is the only software i got, so from what i can gather its probably a wiring fault not the modules. haldex module is ?700 and abs module is ?500 dont need that just after xmas.
i had samething and abs module was gone, so i wouldsay is time for u, i know is a pain but can do nothing this things go
ucan fix it or get from scrap same price ,, some people fix it on ebay
mario
"intermitent" means that the fault is not always present. For the ABS - these year VAG models have an issue with the ABS module - check if the earth is connected on the module itself. For the FWD module - look at the wiring.
The ABS is quite hard to be fixed. Here is a HOWTO - http://www.lbak.dk/Audi/Repair_ABS_unit_passat.pdf.
Fcuk up now............... ask questions later
Thanks for the reply guys but what i cant understand is that if the abs module has gone then why no abs light is on in dash or red stop light! electromech i dont understand what you mean here "PS do you have any accessories fitted once can accross a tracing system tapped in can bus wires"
do you mean another type of scanner?
delboy71
Delboy
The ABS and Traction Control is contained within one unit and depending on which side fails it puts either the ABS or TC lights on.
What Electromech is asking is does your car have any extra's fitted e.g aftermarket radio or towbar etc. If these are incorrectly wired in they can give problems, but as your car is a Golf IV then it is not CanBus so this shouldn't be an issue.
Ok thanks for the replies chaps i will have to have a good look round all the connections and see if any water or corrosion has got to the connectors. I checked all the fuses and the ones on top of the battery the other day but they were all fine. just seems weird that this happens a week after all that snow we had.
And for both modules to go at the same time? possible maybe.. we will see
no accesories have been fitted electromech its all a standard 4motion apart from R32 wheels and spoiler.
Ok chaps just before i book this in at the VW main stealers is there anybody on here in or around Redditch (worcestershire) that could do a full scan in exchange for a few beer tokens!!
delboy71
Download this m8, if in doubt, read the vag-com 409.1 thread, should get you going.
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