T6 4motion haldex wiring loom

[bt435]

Hi all,

looking for details about the wiring loom or a flow diagram of the haldex. I'd like to connect a controller box to be able to manually switch the haldex on/off etc.

The T5 had a connector in the left D-column. Is that still the case with the T6?

Thanks in advance!

Ben

 

[Loz]

Have a read of the SSP for the haldex, it's not as simple as "switching it"

 

[bt435]

Many thanks Loz!
The switching part is already sorted. I‘m looking for easiest physical access to the wiring loom.

 

[t6_tom]

Not sure of your reason for doing this but with carista you can change the haldex mode. There are three max, standard and low. Maybe that helps, sorry if it doesn't.

 

[mmi]

I'd like to connect a controller box to be able to manually switch the haldex on/off etc.

Care to share the reasoning?

to be able to manually switch the haldex on/off etc.

Actually T6 has a sturdy handle by driver's seat which turns off Haldex coupling. It's called hand brake
The signal hand brake ON (=light on dash) disables Haldex coupling. The same happens when the normal brake is applied (when brake lights turn on).

T6 - AWD All Wheel Drive Wiring Diagram

AWD 4 motion circuit diagram Also covers elements of diff lock, ABS and steering angle sensor VIP Membership is required to download this document

www.t6forum.com

easiest physical access to the wiring loom.

Either under left seat or by left D-pillar.

 

[bt435]

Care to share the reasoning?

Offroad use. Having the haldex engaged while going down steep angles on gravel or mud. Preventing it from opening when using the break.
Using the haldex as a center diff-lock.

URL unfurl="true"]https://www.t6forum.com/downloads/awd-all-wheel-drive-wiring-diagram.238/[/URL]

Either under left seat or by left D-pillar.

Thanks!

Bought this unit to control the haldex.

Shop

Gen5. Read more

www.vdveer-engineering.nl

 

[JOG]

Witchcraft!

 

[kurienp]

Bought this unit to control the haldex.

Shop

Gen5. Read more

www.vdveer-engineering.nl

Oh no! another thing added to my long list for the van. List grows ... money does not

 

[Spazpecker]

I had a haldex controller on a audi a3 quattro and it made a hell of a difference. I will be getting a haldex controller for my 4mo for 100% fwd for commuting then 50/50 for offroad.

 

[kurienp]

I had a haldex controller on a audi a3 quattro and it made a hell of a difference. I will be getting a haldex controller for my 4mo for 100% fwd for commuting then 50/50 for offroad.

At the risk of taking this thread off course - I suspect that this device can also replace (or should I say - emulate), the mechanical diff lock - if not fitted?

 

[Spazpecker]

Not sure it can as it only locks the haldex centre coupling. Nothing to do with the differential

 

[DaveD]

At the risk of taking this thread off course - I suspect that this device can also replace (or should I say - emulate), the mechanical diff lock - if not fitted?

No, the rear diff lock locks up to send equal drive to both rear wheels, the Haldex controls the amount of drive sent to the rear axle, they are different things entirely.

 

[Rhodders]

with carista you can change the haldex mode. There are three max, standard and low.

Sorry to crash this thread, which is very interesting and informative, but I am interested in your statement above. What is the difference in the 3 modes ie how do these affect 4wd engagement? Thanks

 

[t6_tom]

Sorry to crash this thread, which is very interesting and informative, but I am interested in your statement above. What is the difference in the 3 modes ie how do these affect 4wd engagement? Thanks

Very late reply. Sorry

Technically I don't actually know, hopefully someone on here does. However from what I picked up on the internet it seems that it changes how quickly the haldex engages. For instance I believe later versions of haldex use more sensors and will engaged much earlier like when you are pulling away before wheelspin is actually detected.

From reading someone who had a fast golf (I think) turning it up made the car feel more for 4wd, less understeer etc. Negative is that it uses more fuel and not sure what it actually does to the haldex system. However from what I can see this is something that was program in there by either VW or haldex themselves.

I would also love to know more.

 

[bt435]

All your input is highly appreciated!

I'd love to know more as well.

 

[t6_tom]

All your input is highly appreciated!

I'd love to know more as well.

Not sure if this helps it's a little light on technical detail but does say that basically turning it up sets the four-wheel drive to be more active.

Carista

blog.caristaapp.com

 

[DaveD]

Not sure if this helps it's a little light on technical detail but does say that basically turning it up sets the four-wheel drive to be more active.

Carista

blog.caristaapp.com

I've never had any detectable front wheel slipage on tarmac and only some 4 wheel slipage on muddy terrain so it wouldn't be something that I would benefit from, but in my opinion such a mod could potentially create a problem if you had any transmission problems whilst under warranty.

 

[t6_tom]

I've never had any detectable front wheel slipage on tarmac and only some 4 wheel slipage on muddy terrain so it wouldn't be something that I would benefit from, but in my opinion such a mod could potentially create a problem if you had any transmission problems whilst under warranty.

I have a mapped 204. I do find that in the winter, even on winter tires the van will understeer under power when leaving large roundabouts etc. I think the four-wheel drive could be working a bit harder in this situation.

However against increased fuel costs and potential increased haldex wear I haven't been tempted to shift it to max four-wheel drive mode.

 

[DaveD]

I have a mapped 204. I do find that in the winter, even on winter tires the van will understeer under power when leaving large roundabouts etc. I think the four-wheel drive could be working a bit harder in this situation.

However against increased fuel costs and potential increased haldex wear I haven't been tempted to shift it to max four-wheel drive mode.

I suspect you're a more "enthusiastic" driver than me!

 

[n10n]

Inspired by this thread I turned it on today. I took her for a short spin on an icy road and it seems to give little bit more kick from the rear when accelerating and little bit less less push (understeer) on bends. Not night and day by any means but then again I don’t drive van like a sports car.

Also I kept watching OBD11 live data -> Haldex clutch status. While up to speed it kept at <1% and really only engaged when accelerating. However I haven’t ever looked at that status without the the adaptation so have nothing to compare against. Anyway… quick results: seems like that adaptation is not really a permanent AWD, just little bit more eager to use rear drive. Needs longer term testing though.

Let’s see but maybe I’ll keep it on through winter, I’m not driving much currently though