As covered in my thread here, I have a 2018 S3 S-Tronic. I've never been convinced that it had proper working 4WD when compared to my previous cars, so had it inspected in the last few days. As suspected (and despite new fluid earlier this year), the Haldex pump gauze was gunked-up.
Unfortunately, replacing the Haldex pump and doing the VCDS pump re-learn procedure doesn't seem to have improved things. I'm told that the rear transfer box still isn't getting sufficient oil flow. The garage is going to try a final flush of the system from the pump onwards in case the gunk has gotten that far, but otherwise they say the next step is a new rear transfer box at c.£5k fitted!
I'm obviously a bit unsettled at that prospect. It certainly doesn't seem like great value compared to all the other things in my life and at that price I'd consider the alternatives. Sadly, the car is out of warranty.
I guess I'm just asking for any experience or opinions on this. One option is to have a second garage or Haldex specialist look at it, though I'm already racking up a fair bit of labour charges just getting this far.
Unfortunately, replacing the Haldex pump and doing the VCDS pump re-learn procedure doesn't seem to have improved things. I'm told that the rear transfer box still isn't getting sufficient oil flow. The garage is going to try a final flush of the system from the pump onwards in case the gunk has gotten that far, but otherwise they say the next step is a new rear transfer box at c.£5k fitted!
I'm obviously a bit unsettled at that prospect. It certainly doesn't seem like great value compared to all the other things in my life and at that price I'd consider the alternatives. Sadly, the car is out of warranty.
I guess I'm just asking for any experience or opinions on this. One option is to have a second garage or Haldex specialist look at it, though I'm already racking up a fair bit of labour charges just getting this far.