Question about the 4WD system in the Tiggy

[Amirst10]

read this
Haldex Performance Controllers | HPA Motorsports, Inc.
watch :

https://www.youtube.com/watch?v=IOBxhX8Hkmo

[vwrovervolvo]

My understanding (I stand to be corrected) and in my experience, when starting from a standing start, the tig is in AWD untill it reaches a certain speed and then reverts to FWD. Certainly if I put my foot down on a dry road from a standing start I get an AWD wheel spin. It might be worth having the error codes read to see if the haldex has failed which is not uncommon.

Digging up an old thread but this is my experience too. I have only driven offroad with the "off road" button engaged, however the grip is as good as my serious (constant 4x4) vehicles (tyres aside).

This writeup says the system only takes 150 ms to transmit full torque to the rear: http://www.vwwatercooled.com/forums/...vws-48451.html

There is a lot of confusion in this thread about the "diff locks" however. The Haldex works like a limited slip diff, however the front and rear diffs are open - relying instead on the ABS system to provide traction control.

However I have a question. I was driving some hills on the farm that I normally drive in low range in the landy. The Hill Descent light started flashing while going down. I cannot see a reference to this in the manual.

Also - it is annoying that the "off road" mode switches off every time the engine is stopped. is there any way to disable this?

[Johnny]

My understanding (I stand to be corrected) and in my experience, when starting from a standing start, the tig is in AWD untill it reaches a certain speed and then reverts to FWD. Certainly if I put my foot down on a dry road from a standing start I get an AWD wheel spin. It might be worth having the error codes read to see if the haldex has failed which is not uncommon.

[Cameciso]

So to get a true 4WD effect you would have to purchase the LSD if such an option exists. Do all small SUVs operate like this? It seems that you could really get caught if you mistakenly believed that you could rely on the 4WD to get you out of trouble with, say, one tyre in mud

[h100vw]

I read Phaeton's post with interest as that was my understanding of how it all works from the VW literature that's was available when I purchased the vehicle. However, the other day I was attempting to tow a boat trailer and I had one front wheel on grass and one on the driveway. The wheel on grass spun madly and no power was transferred to either the other front wheel or to the rear wheels. After a few attempts I gave up and put the vehicle entirely on the driveway and used a rope to drag the trailer up. In this instance therefore, it operated just like any front wheel drive vehicle would have.

The front diff is open and I believe that both fronts would need to spin faster than the rear to trigger the Haldex.

Gavin

[Cameciso]

I read Phaeton's post with interest as that was my understanding of how it all works from the VW literature that's was available when I purchased the vehicle. However, the other day I was attempting to tow a boat trailer and I had one front wheel on grass and one on the driveway. The wheel on grass spun madly and no power was transferred to either the other front wheel or to the rear wheels. After a few attempts I gave up and put the vehicle entirely on the driveway and used a rope to drag the trailer up. In this instance therefore, it operated just like any front wheel drive vehicle would have.

[Arctra]

Quite correct and if you have an auto and watch the gearchange points on the mfd you'll "feel" one that doesn't exist, that's the move from 50/50 back to 90/10 !! Certainly noticeable in the diesel which doesn't use 1st gear in "D" anyway.

Cheers

I've just had an "Ahhhhh" moment! I had actually noticed something like that but put it down to being my imagination. It certainly is a noticable change when it happens I must say!

I've actually found that pulling away from traffic lights and things S mode is a bad idea. Apart from panel-beating the bonnet with the pistons coz the engine revs to high, the 1st gear is actually too low. If I do want to drag race off the line I've found doing it in D mode is best, then switch to either tiptronic or S mode after that.

I am hoping to do a bit of soft-roading soon to test the off-road capabilities of the Tig. From my experience with 1st gear to date, I reckon it'll be low enough to do the sort of off-roading I'll want to do (given that it's a brand new vehicle and I don't want to risk damaging it).

[Vicbitter]

True, but still, you'd wanna rev it in low range to get outta potential trouble. The tdi rev's too low.

oops, i meant low gear.
also i forgot, the ratios must be different in the manual..
I got the 6 speed manual, and i tell ya, you gotta give it a bit,

[NZTiguan]

True, but still, you'd wanna rev it in low range to get outta potential trouble. The tdi rev's too low.

Utter bunkum, never heard so much baloney in a long time, make up your mind, do you want low gearing for crawling over things, going up and down hill etc or high wheel speed for clearing mud from your tires etc, if it's the later just turn the esp off (which we do when in seriously slippery stuff) and feed it the acid, engine revs have nothing to do with it !!

Cheers

[Vicbitter]

True, but still, you'd wanna rev it in low range to get outta potential trouble. The tdi rev's too low.

[NZTiguan]

Remember the Tiguan does not have low range which IMO is vital if you wish to be called a serious offroader.

That said anything if possible.

Yep but the 1st gear is VERY low in the auto and with the diesel (the diesel doesn't even use 1st normally in "D") is the nearest thing you'll get to a crawler gear without a separate low ratio box.

Cheers

[Vicbitter]

Remember the Tiguan does not have low range which IMO is vital if you wish to be called a serious offroader.

That said anything if possible.

I agree its not a serious off-roader, but if it has the option for 4WD lock, technically, its a 4WD? Like my patriot, it has 4X4 lock mode.

[brh1978]

The Off Road option is available on all Aussie models as a $300 factory option. I didn't go for the option at the time of ordering the car, kind of wish I did now just to have it...

--------
Off-road Technology
Compass in Multi-Function Display Plus
Hill Descent Assistance
Low tyre pressure indicator
Adjustments to ABS, EDL and accelerator pedal characteristics for
enhanced control on loose surfaces
Gear pre-selection (Automatic models)
--------

[phaeton]

Remember the Tiguan does not have low range which IMO is vital if you wish to be called a serious offroader.

That said anything if possible.

[Vicbitter]

So if it has the option of locking the diff's, its 4wd then isnt it...
AWD and 4Wd