suspicion that haldex isnt working

[Matty VWR 32L]

hi all,

a lil background info, mk4 r32 85000km, serviced regularly, blue haldex controller installed and a few other small mods.
now done to the business, after meetin up with dainese on the weekend i have come to the conclusion that my haldex is not functioning properly, as i can get a tremendous amount of wheelspin in 1st and 2nd whilst taking off normally and then accelerating hard.
i have read around a few different places and heard things such as the electric precharge pump being the cause but im really at a loss as to what it may be, so if anyone can provide any comments as to why or what is causing this or have had similar experiences and hopefully solutions, you would officially be my new best friend.
also i havnt had it scanned yet for any fault codes, if anyone can help out with tht would be appreciated.

thanks

Matt

[Dyldo]

given your location mate, i'd give Arthur from Exoticars a call in Nth Parra and swing by there.

Hell, why he is fixing your ride you can gawk at the inevitable Ferrari or Lambo in there too. crazy stuff.

[goodfella]

or do what I did and put it on the dyno only to find your driving a 2motion

[Dyldo]

in that case for you, was it a fuse or a controller or the diff?

[goodfella]

haldex ctlr failed

[Matty VWR 32L]

in that case for you, was it a fuse or a controller or the diff?

can anyone tell me what fuse it is and where it is located?

[quozl]

can anyone tell me what fuse it is and where it is located?

R32 Fuse List or PDF version

Fuse 31 TCM (Transmission Control Module)

BTW it could be your brake light switch, E brake button or sometimes the plug to the controller gets corroded. Best bet is to scan for codes first.

[Matty VWR 32L]

BTW it could be your brake light switch, E brake button or sometimes the plug to the controller gets corroded. Best bet is to scan for codes first.

How do i know and/or find out if the brake light switch or e brake button is cause?

[dainese]

How do i know and/or find out if the brake light switch or e brake button is cause?

nah your brake light switch is working. well it should be. brake lights were working, except the NS light.
and if it fails it should throw a CEL.

unsure about ebrake button.

trust me there is a thread on vortex to check for haldex operation

[quozl]

Quite often it will throw a code without throwing any indication on the dash, we had this happen at a rally once years ago up here with the resulting Vagcom report something like "brake light switch intermittent". There are a heap of threads on Vortex as dainese says but get someone to scan the car for you with Vagcom if you don't own it yourself or take it to a dealer and get it done it is the only accurate way of knowing what is causing it.

If you get no codes then some of these threads may help you narrow down the issue.

Check the following threads on Vortex

Haldex Problem

AWD Haldex Issue

My AWD isn't working

Haldex Pump Issue

There are hundreds of others just do a search of the Mk IV R32 forum.