Haldex Controller Fault 02248

[TasMan]

Hi All,

 

After 4 years trouble free 4x4 motoring since replacing the pump on my Haldex unit it seems I have a new issue to deal with....

 

I have the error code 02248 Valve for controlling clutch operating angle.

I am noticing when I pull up to junctions or traffic lights, when in neutral the engine seems to labour slightly for a few seconds and I feel a slight bump at the rear as if something is disengaging.

This is what prompted me to check for faults as I suspected a Haldex issue.

 

I have been in touch with Matt at Auto Fault Finder (excellent Haldex Repairs Website) and it is looking like the common issue of a fault with the Haldex controller caused by corrosion on the PCB.

Usually repairable but involves sending the controller away for diagnostic/repair.

 

Looking for any advice on the following if anyone has had to do this:-

 

How to remove the controller (I believe it is straightforward enough) ?

 

Until I get a chance to get the controller sent away I am wondering if disabling the Haldex by pulling the fuse is possible ?

Fuse 29 is the Haldex unit, often pulled by tuners when remapping on a 2WD rolling road set up to prevent the rears turning.  Does pulling this fuse affect anything else ?

 

As much as 4x4 makes for an excellent driving experience with the Superb, it really does seem to be quite a fragile and troublesome option to maintain....

 

Cheers

Dave

 

 

 

[Smart Pro]

The main problem with the Haldex unit is lack of maintenance, as it is considered ‘sealed for life’ by Skoda and therefore the changing of fluid / filters is not incorporated into maintenance schedules. Like brake fluid, Haldex fluid is hygroscopic (absorbs moisture), so over time it will degrade and ultimately increase the chance of corrosion within the unit. Ideally, fluid and filters should be changed every 40k miles. Not a difficult job and plenty of ‘how to’ videos on You Tube, as the process is similar across the whole VAG range. The companies, which specialise in Haldex repairs, sell the maintenance kits and fluid. 

[Ootohere]

Not 40,000 miles or @ 4 years. 40,000 miles is far too many miles before servicing the haldex.

Unless 4 years happens to be the 2nd time it is being done, like when due as it is 20,000-30,000 miles since last done.  Volvo were @ 2 years / 20,000 miles.

 

The Service Schedule, Guidelines, Recommendations was changed to 30,000 miles / 3 years a decade ago by VW, and eventually by Skoda, but they never made that clear to owners or Dealership Service Desk staff.

& they still think the filters are some fictional part. 

 

http://briskoda.net/forums/topic/442337-haldex-problem-scout

 

http://eco-torque.co.uk/post/haldex-control-faults-fixes-for-your-haldex-unit-eco-torque-ltd

 

.........

A member's picture from the thread above in Briskoda.

Edited 14 January, 2023 by toot

[Smart Pro]

2 hours ago, toot said:

Not 40,000 miles or @ 4 years. 40,000 miles is far too many miles before servicing the haldex.

Unless 4 years happens to be the 2nd time it is being done, like when due as it is 20,000-30,000 miles since last done.  Volvo were @ 2 years / 20,000 miles.

 

The Service Schedule, Guidelines, Recommendations was changed to 30,000 miles / 3 years a decade ago by VW, and eventually by Skoda, but they never made that clear to owners or Dealership Service Desk staff.

& they still think the filters are some fictional part. 

 

http://briskoda.net/forums/topic/442337-haldex-problem-scout

 

http://eco-torque.co.uk/post/haldex-control-faults-fixes-for-your-haldex-unit-eco-torque-ltd

 

.........

A member's picture from the thread above in Briskoda.

/cdn-cgi/mirage/70aec55e5b3f8b82b8e80ae780dca86e07a90586d44aa31d67e5b43e89535cf5/1280/https://www.briskoda.net/forums/uploads/monthly_2023_01/366234137_Screenshot2023-01-1407_56_37.thumb.jpg.28c75df120a50768e0842b3ff89e209c.jpg

I agree that 20k miles would be better, but the reality is that most owners would be put off by the additional expense. As a DIY job it is inexpensive and relatively easy to do. My previous car was a Porsche Cayenne and these suffered from premature Transfer Box failure due to ingress of moisture. Porsche decided that the transfer box fluid should only be changed once every 160k miles or so! 

[Ootohere]

What Porsche / VW Group advise might be different from a Porsche Executive / Technician will do with their own keeper. Bought and paid for by them. 

 

Additional expense having someone do it, or materials if you do.

Cheap compared to failure. recovery etc. 

 

If you have a keeper then location location location and how you use the car.

Do you cross fords, wade puddles, farm tracks or snowy area, longer winters.  Use a Part time or full time AWD for what many buy them for. 

 

.............

As much use as a Chocolate Fireguard when on the wrong tyres.

 

Buy near all the gear and no idea. 

Edited 14 January, 2023 by toot

[Smart Pro]

Couldn’t agree more, although the transfer box issue on the Cayenne was apparently due to a poorly sighted vent pipe, which sped up the contamination of the transfer box fluid! However the ‘sealed for life’ approach has always seemed flawed to me, when the definition of ‘life’ is so subjective!

[Ootohere]

Wheel Dealers in the USA with Ant doing the work was on the telly as a repeat this week.

It was a good watch, including the doughnut & the upgrade ,

Drive Shaft Clamping Bearing Support Mount;, non Porsche part he fitted.   I forget the name he called it. 

 

I was looking to see where the show might be on catch up. 

 

 

 

 

Edited 14 January, 2023 by toot

[DEL80Y]

@TasMan|

Just bolted on side 

[TasMan]

Thanks for the replies...

I should have been more specific, I'm aware of the Haldex servicing requirements, the bitterness of my pump failure in 2018 despite servicing as per Skoda schedule and getting no support from my dealer took a while to simmer down lol

Even telling the dealer about the replaceable filter and the servicing requirements, I was pretty much told "Its not on our system and we don't know about it !!"

 

Since then I have been using an independent with an interval of 2 years and approx 16k miles, well ahead of Skoda's recommendation.

After the new pump, filter and fluid fitted Nov 2018 it was done again Sept 2020@16k interval and I was about to get it done this month again just over 2 years@16k miles interval.

Hence 4 years trouble free motoring until now.

 

I was wondering about disabling the Haldex via pulling the fuse and whether that would cause any issues until I get it sorted out...?

 

I've been watching a few Youtube videos on the subject and as Del8oy has noted its a couple of bolts to remove.

I hadn't realised when you pull off the ECU it is directly linked to the control valve and you can't drive the car any further due to the oil loss potential.

Seems a poor design really.

 

Currently looking at my options...  can't really afford the car off the road while I send the unit away for repair so will see what I can come up with.

If I had better facilities to safely work on the car I would do it all myself, certainly not going near Skoda ££££ !

 

Cheers

Dave