Tiguan Haldex Malfunction .. VCDS test help !

[Lucas_R]

Yep. Same story... Now I hate front wheel drive Tigs. with 270 hp..

Well IF your Haldex is infact dead.......you have 2 options (providing your warranty is bust due to mods).

- Buy the HPA Haldex competition controller from HPA in Canada (about $1000). This allows you to adjust the front/rear bias. HPA Motorsports, Inc. - Haldex
- Buy a 2nd hand Haldex from someone with a Golf R who has upgraded to the HPA controller. These go pretty cheap (circa $200). Here's a really cheap one off a low km Golf R: Golf R odds and ends extravaganza - come one, come all!

[Ramee]

Well IF your Haldex is infact dead.......you have 2 options (providing your warranty is bust due to mods).

- Buy the HPA Haldex competition controller from HPA in Canada (about $1000). This allows you to adjust the front/rear bias. HPA Motorsports, Inc. - Haldex
- Buy a 2nd hand Haldex from someone with a Golf R who has upgraded to the HPA controller. These go pretty cheap (circa $200). Here's a really cheap one off a low km Golf R: Golf R odds and ends extravaganza - come one, come all!

Thanks a lot. I send him a msg. But not sure it will fit a Tig.
I will give it a try.

[Lucas_R]

But not sure it will fit a Tig.
I will give it a try.

Should be the same i believe. Worth a try for a measly $50. Cant imagine how much VW would charge for one.

[Ramee]

Should be the same i believe. Worth a try for a measly $50. Cant imagine how much VW would charge for one.

You don't want to know !! 2500AUD including gst for part alone & 3 weeks from
Germany. What a joke..

I heard what they recommend is to change whole rear end.

[MGV]

Now, you've probably already gathered I'm no fan of launching our cars... Just out of interest, is this something that could be bought on by the stresses of launching?

[Lucas_R]

Now, you've probably already gathered I'm no fan of launching our cars... Just out of interest, is this something that could be bought on by the stresses of launching?

Possibly - although plenty of guys regularly drag race and circuit race their Golf R's etc and haven't reported any issues. The thread i posted earlier with the Golf R failure, that car has never been dragged.

[Guy_H]

You need to diagnose it correctly firstly (in this case VW may need to do it).

Secondly a Golf R runs a totally different Haldex controller to a Tiguan. If you buy a Golf R one, you will just blow more money for no reason.

[Guy_H]

Now, you've probably already gathered I'm no fan of launching our cars... Just out of interest, is this something that could be bought on by the stresses of launching?

The "controller" cant be broken by launching as it only "controls". Your differential & the clutch plates are what has to take up shock loading in the rear differential. A failure to these components is extremely rare. We have run well over 600hp through these rear diffs, with repeated launching & never had an issue.

The failures I have seen (hardware as above) are generally from a pump circuit fault not being picked up for some reason, & the car driven a lot of miles with the lamars fully engaged. The system is not designed for that.

The other breakages we have seen is for some modified aftermarket Haldex controllers that do not free spin under braking - this shock loads the differential in a way it was never designed to have a force transmitted (basically backwards through the gears) - so avoid those controllers like the plague!

[Ramee]

The "controller" cant be broken by launching as it only "controls". Your differential & the clutch plates are what has to take up shock loading in the rear differential. A failure to these components is extremely rare. We have run well over 600hp through these rear diffs, with repeated launching & never had an issue.

The failures I have seen (hardware as above) are generally from a pump circuit fault not being picked up for some reason, & the car driven a lot of miles with the lamars fully engaged. The system is not designed for that.

The other breakages we have seen is for some modified aftermarket Haldex controllers that do not free spin under braking - this shock loads the differential in a way it was never designed to have a force transmitted (basically backwards through the gears) - so avoid those controllers like the plague!

Can you please explain the pump circuit failure thing bit more. If this happens what need to be replace ( I think this circuit is in the haldex controller it self.

[Guy_H]

Can you please explain the pump circuit failure thing bit more. If this happens what need to be replace ( I think this circuit is in the haldex controller it self.

Ramee, the whole thing is hydraulic, controlled by electronics - this is why you need proper diagnosis. You can spend a week in Haldex school - but you have to go to Sweden for that.