is there a transfer case on the 2015 s3?

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949

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hey guys I'm curious as to whether the 2015 s3's have a transfercase?

also will taking the plug out of the haldex in the rear turn it into a front wheel drive only car?
 
Yes it does.

Why would you want to do this?
 
No transfer case, no centre diff.

And yes to the second question as Alex answered above. But why would you want to do this?
 
Last edited:
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veeeight said:
No transfer case, no centre diff.

And yes to the second question as Alex answered above. But why would you want to do this?
Click to expand...

My mistake for that...but still why!
 
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So if it is possible to turn the car into front wheel drive only...

Is it possible to "fix" the car into 4 wheel drive permanently, with a front to rear drive split equally at 50% each...irrespective of which axle actually needs the drive...and keep it fixed even under braking (as opposed to the standard setup disengaging haldex when braking).

And at the same time as all this...maintain ESC and other stability aids...and traction control.
 
Um

You can force a 50:50 drive split front to rear, by welding up or fusing all the clutch plates in the Haldex, or by programming the hydraulic valve to permanently engage the clutch plates all of the time......

But this would make the car un-drivable on Tarmac, and would eventually break something because of transmission wind-up.

There is no centre diff in these "not proper quattro" cars. Haldex is there primarily to lend traction off the line.

See this post for a further explanation:
http://www.audi-sport.net/xf/threads/quattro.232948/#post-2327834
 
so long story short, I was debating on weather a guy who recently got his car tested (s3 2015) on a 2wd dyno should have used a 4wd dyno. me, coming from a Subaru history, this is a no no. so, another person and I said that he should have used a 4wd dyno instead as what he did will break something. someone else said its ok as the haldex can be turned off and he also said that there is no center diff. but I asked for some sort of audi info on it so I can verify that its ok to do this, he said there are none to be found. so since I'm new to audi I wanted to verify this as the internet has so much yes and no on this but with no concrete info from audi.
 
Short answer

Disconnect Haldex Controller connector and it will be front wheel drive.

No centre diff, no transfer case/box.
 
Haldex cars do not like 4wd dynos, doesn't make for a very smooth grath with the car lurching about.
Usually pull the haldex fuse and run in fwd.
 
I had my 8p s3 on a front wheel drive dyne just disconnected the haldex under the rear seats,
don't know if its the same on the 8v.
 
Essflee said:
Haldex cars do not like 4wd dynos, doesn't make for a very smooth grath with the car lurching about.
Usually pull the haldex fuse and run in fwd.
Click to expand...

This is spot on.

Mine never ran well on 4WD dynos,and always pulled load out in the midrange.
Performed far better on the road,although part of the problem was down to engine software and midrange torque delivery.
 
On the 8V I would advise disconnecting the Haldex controller connector, rather than pulling the fuse (Nr.44) out.

I was doing some fault finding recently, pulled out Fuse 44 to isolate the Haldex, and the dash lit up like a Christmas tree, and many many many fault codes from all sorts of other controllers got logged. I had to clear them all after I finished!
 
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veeeight said:
On the 8V I would advise disconnecting the Haldex controller connector, rather than pulling the fuse (Nr.44) out.

I was doing some fault finding recently, pulled out Fuse 44 to isolate the Haldex, and the dash lit up like a Christmas tree, and many many many fault codes from all sorts of other controllers got logged. I had to clear them all after I finished!
Click to expand...

Evolution...
 
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