Haldex Question

Simon Lowe

Registered User
Hi
After reading various posts regarding haldex service etc I am still not sure if the pump needs removing and cleaning, I have rang several places pertaining to be Audi specialists who say they just change the oil, it seems the favoured route is removal on the forums, any views on this would be appreciated as I’d like to have mine serviced asap but would obviously like it done properly, Main dealers also only change the oil just to add
 

MikeParkin

Registered User
Definitely get the pump off and clean the filter and get new oil in. If you don’t it will be a new pump and there not exactly cheap to replace for the sake of a filter clean.

Mine was bad after two and a half years and the oil was changed the previous year so I wouldn’t neglect getting it sorted.
 

A19quattro

Registered User
I was readi9ng about this, on here I think and wondering why I was reading it, forgetting I own a 2015 T5 4 motion. It's been off the road for the winter, being camper van and we just got it out at the weekend for it's beginning of the year service and MOT. In the recommendations they said to change the Haldex oil, that's it I thought, why I have been reading about it. Does anyone know what Haldex it will have i.e. what generation and then I can look into what's needed by way of oil/filters etc., I remember from the pictures in the thread I was reading I was shocked how much dirt builds up in a relatively short time/mileage, so definitely worth doing even though we are at 4 years/ 13,000 miles
 

MikeParkin

Registered User
I was readi9ng about this, on here I think and wondering why I was reading it, forgetting I own a 2015 T5 4 motion. It's been off the road for the winter, being camper van and we just got it out at the weekend for it's beginning of the year service and MOT. In the recommendations they said to change the Haldex oil, that's it I thought, why I have been reading about it. Does anyone know what Haldex it will have i.e. what generation and then I can look into what's needed by way of oil/filters etc., I remember from the pictures in the thread I was reading I was shocked how much dirt builds up in a relatively short time/mileage, so definitely worth doing even though we are at 4 years/ 13,000 miles

Have a little google search pal I’m sure it will be on there and possibly a YouTube video.
 

Mylee

Registered User
I specified an oil change and filter clean at my service (car on approx. 18k miles) Filter was gummed up and oil was very dirty.
Looking at your profile pic, I take it yours is a cab as well. There is an extra crossmember on the cab, but the pump and filter can be removed with it in place, don't let any garage tell you otherwise!!!:thumbs up:
 

Lehn

Registered User
I was readi9ng about this, on here I think and wondering why I was reading it, forgetting I own a 2015 T5 4 motion. It's been off the road for the winter, being camper van and we just got it out at the weekend for it's beginning of the year service and MOT. In the recommendations they said to change the Haldex oil, that's it I thought, why I have been reading about it. Does anyone know what Haldex it will have i.e. what generation and then I can look into what's needed by way of oil/filters etc., I remember from the pictures in the thread I was reading I was shocked how much dirt builds up in a relatively short time/mileage, so definitely worth doing even though we are at 4 years/ 13,000 miles

Take a look here:
https://www.audi-sport.net/xf/threads/haldex-gen5-oil-change-and-gauze-clean.379347/
https://www.audi-sport.net/xf/threa...ge-and-gauze-clean.379347/page-2#post-3378839
 

Leevr

Registered User
Are there certain S3s that dont have a haldex filter or is it across the board. I called Audi and was told it depends on the car? ?
 

ZipZap01

Registered User
Older generations of haldex (up to 4) have a replaceable filter which should be replaced when the oil is changed.

The current A3/S3 (haldex gen 5) does not have a replaceable filter. This is the problem, as the "for life" filter clogs and is not intended to be cleaned or replaced so the haldex system must be taken apart to get to it.
 

Stevelolly

Registered User
Studio_20190307_205201.jpg Changed my Haldex oil and cleaned filter lasr night on the back of what I've seen on this forum , glad I did ! 4 year old S3 with 24000 miles and filter was all but blocked
 

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Stevelolly

Registered User
Start to finish around an hour . Now I've done one I could do it quicker , took me me a while to disconnect the pump electrical connector from the module , bit tight !
 

A19quattro

Registered User
Cheers guys,one of those links above was the very one I was reading, so will bookmark the info now so I can find it again :)
 

kingbilly

Registered User
Simon,

I had my haldex oil changed this week at a main dealers, Aberdeen Audi. Whilst there the pump was removed and filter/gauze cleaned at no extra cost. Was charged £84 for the work.

I had pre-arranged removal and clean with the service manager. If you don't ask...you don't get.

Ask nicely and I am sure they will accommodate you, or take your custom elsewhere.

Hope this helps.
 
I did my Haldex fluid today 5years old with 35k and wasn’t too bad. Some slight gunk buildup but certainly not blocked and as bad as some pics I’ve seen. Deffo not hard particals either The filter has never been cleaned previously.
 

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ViperG

Registered User
Start to finish around an hour . Now I've done one I could do it quicker , took me me a while to disconnect the pump electrical connector from the module , bit tight !

Mine is coming up this summer. I may take the one guys advice and just unscrew and remove the filter to clean it and leave the pump plug connected. I think I'd like that so that I don't get any cleaner or debris into the pump.
 

Stevelolly

Registered User
No way I could have removed the pump without disconnecting the wiring , the wiring harness goes over the diff and just doesn't have enough slack in it . It runs through a plastic guide that's clipped in , even if you did manage to pull it enough I wouldn't fancy putting that much stress on the wires , just easier to disconnect it
 

ViperG

Registered User
No way I could have removed the pump without disconnecting the wiring , the wiring harness goes over the diff and just doesn't have enough slack in it . It runs through a plastic guide that's clipped in , even if you did manage to pull it enough I wouldn't fancy putting that much stress on the wires , just easier to disconnect it

Oh well guess I'll be removing the harness then. Any special release on the plug?
 

Lehn

Registered User
No way I could have removed the pump without disconnecting the wiring , the wiring harness goes over the diff and just doesn't have enough slack in it . It runs through a plastic guide that's clipped in , even if you did manage to pull it enough I wouldn't fancy putting that much stress on the wires , just easier to disconnect it

I got the exact opposite experience. I just decided to pull the pump out (which wasn’t that hard) and unscrew the filter because it would be too difficult to disconnect the wire while laying under the car - there is just not enough room and the connector is a PITA to get off, I tried but without success.
 

Stevelolly

Registered User
I guess your best bet is get it in the air and take a look , clearly some have a longer harness than others . Don't be afraid of disconnecting it , my advice is to push the connector on harder as you press the tab , it seems to help it release . If your lucky yours will be long enough , mine was lined in metal braid ,that acts as earth I presume , and had absolutely no spare in it at all .
 

MikeParkin

Registered User
You don’t need to take it off completely to clean the filter, it just makes things that little bit more awkward. I tried both ways and taking it off was best.
 
Just pop the plastic guide retaining clip off and it gives enough slack to do the job safely. No need to remove the harness at all. Then the clips goes back nicely afterwards
 

Simon Lowe

Registered User
I went into Audi Derby yesterday to be told they did not clean the pumps on a haldex oil change and furthermore would not do so under any circumstances due to it not being an Audi policy!!, they went on to say they would flush the system first before the oil change so they would need to use two sets of oil seals etc so would charge me for two services !!, I will never have any work done here as a result of this as it is just stinks of bs.I was also told by same person that Audi Huddersfield would do it no problem !!, when I asked why they would and you won’t I got a very good impression of a French shrug !!
 

winrya

Registered User
I’m staring to wonder whether the filters always look gunged up like that? I’ve seen changes at 5k and 50k and they all seem to look the same. What if you clean the filter and within the first drive it’s already gunged up like that and that’s why audi don’t clean it
 
The gunk is the fluid breaking down. I.e the additives leaving the oil. This happens with age heat and use. So. No the gunk isn’t normal. Plus some are bad and have bits of clutch etc at 5k and some are good at higher mileages. Perhaps testiment to how the cars Been driven. Mine was gunky but not blocked or with bits in. But mine has never been launched and when I bought it with 30k had the original tires.
 

Runner

Registered User
Had a remap today by R Tech and they checked and cleaned my filter. It was a bit dirty and only done 21000 miles
 

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davc

Registered User
Had a remap today by R Tech and they checked and cleaned my filter. It was a bit dirty and only done 21000 miles
I would say that was pretty gunked up. Mine was a lot cleaner than that at 48k when it was done.
 
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