Haldex Gen5 oil change and gauze clean.

mikemod

Registered User
The bolts and O rings are £15 from Audi so the rest must be labour :(
 

Jud

Registered User
Just ordered the kit from Crewe Audi to do this myself

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w.h.i.p.p.e.t

Registered User
Is it necessary to carry out a pump learn through vcds if this clean and oil change is done at home? I'm more than happy to do this myself but have read a pump learn should be done following this procedure.

Here's the Gen 5 'O' rings at a sensible price. Worth keeping a couple of sets for spare.

https://www.haldexrepairs.co.uk/shop/haldex-other-small-parts/o-ring-seals-for-gen-5-haldex-pumps/

Looks like a pump learn is a 'best practice' procedure. Nice bit of info via the link in the description for the O-Rings. Looks like you need to use VCDS for this though...

Linkylink - https://www.haldexrepairs.co.uk/generation-5-haldex-fault-finding-repair-guide/
 

mike170

Registered User
Looks like a pump learn is a 'best practice' procedure. Nice bit of info via the link in the description for the O-Rings. Looks like you need to use VCDS for this though...

Linkylink - https://www.haldexrepairs.co.uk/generation-5-haldex-fault-finding-repair-guide/

My filter was clogged up, and needed this after finding front wheel spinning under acceleration!

Got the pump learn done at Indy for £30, only then to find out can be done via odb eleven!


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Jud

Registered User
Well kit has arrived from Crewe Audi, guess to fill it I've got a 100ml syringe & some rubber hose..... might wait till it's a little warmer?
fb3c64750b5e64691ab4a3cc97a114f4.jpg


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w.h.i.p.p.e.t

Registered User
Well kit has arrived from Crewe Audi, guess to fill it I've got a 100ml syringe & some rubber hose..... might wait till it's a little warmer?
fb3c64750b5e64691ab4a3cc97a114f4.jpg


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So it doesn't it come with the pump-top and tube?
 

Nige Smith

Registered User
Had my S3 into John Mitchell Racing today for my Haldex service & gauze clean! £139 all in. John & Ben really know their stuff & deal with all aspects of VAG tuning & servicing. I would highly recommend them.
 

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craigpanthercrystal

Registered User
£139! It takes 15 minutes tops, I thought Audi were steep at £90! I guess if you don't like getting your hands dirty then £139 is worth peace of mind but it is such an easy job DIY.
 

craigpanthercrystal

Registered User
Anyone in Peterborough ill do it with genuine parts and pics with the clean for £90 :) could be a nice earner.
 

Nige Smith

Registered User
£139! It takes 15 minutes tops, I thought Audi were steep at £90! I guess if you don't like getting your hands dirty then £139 is worth peace of mind but it is such an easy job DIY.
p
Bear in mind that it needs a diagnostic check & reset afterwards to remove the 'learnt behaviour' adopted by the pump. I neither have a ramp or diagnostic equipment to carry out this 'simple' job on my £30k car!
 

pburv

Registered User
Had my S3 into John Mitchell Racing today for my Haldex service & gauze clean! £139 all in. John & Ben really know their stuff & deal with all aspects of VAG tuning & servicing. I would highly recommend them.
What mileage was on your car when this was done.
 

N.J.H

Registered User
Ok so undertook this job today having received the service kit and oil last week. It most certainly isn't a 15 minute job to do properly, but is relatively straightforward and the pump strainer was around 50% blocked so I am very glad I did it myself as Audi would have just changed the oil and omitted the most important part of a Haldex service, which is quite ridiculous.
 

Daz4311

Registered User
Ok so undertook this job today having received the service kit and oil last week. It most certainly isn't a 15 minute job to do properly, but is relatively straightforward and the pump strainer was around 50% blocked so I am very glad I did it myself as Audi would have just changed the oil and omitted the most important part of a Haldex service, which is quite ridiculous.
What mileage have yoi done???
 

craigpanthercrystal

Registered User
Ok so undertook this job today having received the service kit and oil last week. It most certainly isn't a 15 minute job to do properly, but is relatively straightforward and the pump strainer was around 50% blocked so I am very glad I did it myself as Audi would have just changed the oil and omitted the most important part of a Haldex service, which is quite ridiculous.
Yes it is... That includes cleaning the Gauze, using a torque wrench and using new O rings, Oh and taking pics. probably 30 mins if you need to work with the car on the ground.
 

Lehn

Registered User
It does if filter blocked, and you end up with the front wheels spinning!

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Of course you should clear any error codes or code the module if you change the pump, but under normal conditions an oil change doesn’t need any coding on a gen 5 haldex unit.
 

Nige Smith

Registered User
Of course you should clear any error codes or code the module if you change the pump, but under normal conditions an oil change doesn’t need any coding on a gen 5 haldex unit.
A diagnostic check is required as the pump has 'learnt behaviour' from when the filter is blocked. If you look somewhere on page 3 of this thread another member mentions it as well. It falls under 'best practise' apparently. John at JRM has over 30 years experience of VAG cars so I'll go with his advice.
 

Lehn

Registered User
A diagnostic check is required as the pump has 'learnt behaviour' from when the filter is blocked. If you look somewhere on page 3 of this thread another member mentions it as well. It falls under 'best practise' apparently. John at JRM has over 30 years experience of VAG cars so I'll go with his advice.

You do know this guy earns money by performing this, right? And this kinda gives it away "ALSO IT DOES NOT WORK CORRECTLY WITH “OBD11” OR CHINA COPY VCDS!". Not a lot of people have a genuine VCDS cable and buying one for just making the oil change would be more expensive than just paying this bloke to do it.

Of course people can do what they want, but let me put it this way: if the pump is smart enough to figure out that the filter is blocked/partly blocked, why wouldn't it be smart enough to figure out when the filter isn't blocked anymore?

He actually explains this below:

"The control unit learns how much power is required to run the pump until the pressure hits a certain threshold, it does this by monitoring how much current is consumed by the pump, when the pump is blocked, or faulty, the control unit learns/adapts some very low values which means when the Haldex controller tried to engage the pump, it does not supply enough power to make it engage. By carrying out the learn function when fitting a new pump, it will learn the correct power values and thus engage the system correctly."

So the unit should learn that it doesn't need that much current anymore to hit this certain threshold after cleaning the filter. I talked to two of my friends which are mechanics at Audi and YES the adaption should be performed when changing the pump since not all pumps behave the same but Elsawin doesn't say anything about making the adaption when just changing the oil.

I just post this so people don't spend money on something that might actually not be necessary. I wouldn't even bother to buy the repair kit because it's only a matter of oiling the o-rings and not overtighten the screws.

I’m just trying to say that some stuff should not be over complicated or made into a business like changing the oil on a haldex unit.

Just my 5 cent, take it or leave it :)
 
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Fatbloke

Registered User
You do know this guy earns money by performing this, right? And this kinda gives it away "ALSO IT DOES NOT WORK CORRECTLY WITH “OBD11” OR CHINA COPY VCDS!". Not a lot of people have a genuine VCDS cable and buying one for just making the oil change would be more expensive than just paying this bloke to do it.

Of course people can do what they want, but let me put it this way: if the pump is smart enough to figure out that the filter is blocked/partly blocked, why wouldn't it be smart enough to figure out when the filter isn't blocked anymore?

He actually explains this below:

"The control unit learns how much power is required to run the pump until the pressure hits a certain threshold, it does this by monitoring how much current is consumed by the pump, when the pump is blocked, or faulty, the control unit learns/adapts some very low values which means when the Haldex controller tried to engage the pump, it does not supply enough power to make it engage. By carrying out the learn function when fitting a new pump, it will learn the correct power values and thus engage the system correctly."

So the unit should learn that it doesn't need that much current anymore to hit this certain threshold after cleaning the filter. I talked to two of my friends which are mechanics at Audi and YES the adaption should be performed when changing the pump since not all pumps behave the same but Elsawin doesn't say anything about making the adaption when just changing the oil.

I just post this so people don't spend money on something that might actually not be necessary. I wouldn't even bother to buy the repair kit because it's only a matter of oiling the o-rings and not overtighten the screws.

I’m just trying to say that some stuff should not be over complicated or made into a business like changing the oil on a haldex unit.

Just my 5 cent, take it or leave it :)

What's the VCDS procedure to get it to re-learn?
 

A19quattro

Registered User
Did the Wife's Skoda Yeti a couple of weeks ago, 101,000 miles and first time I have done it, been done before in the history but nothing to say any time recently.
Was pretty easy and not blocked, just a bit dirty, didn't change the bolts and all came apart and went back together no problem. Done in the drive on a Trolley jack in the frost, in Scotland, pah, Southerners :readit:
Decided to use the Febi oil rather than genuine, reliably informed before buying it's all the same anyway (where have I heard that before...), however as far as I can see it isn't. Genuine oil I had in the garage from my last A3 change (2005, Older Gen but only one number different in the part numbers) is clearer in colour, Febi is more yellowy. Checked and definitely the correct oil, so will see how it goes no doubt. Any one had any issues storing the oil, my older stuff had gone lumpy, so don't think it's useable, may be the Scottish weather, gets us all eventually :cold: will keep you all posted if it goes wrong any time soon, ;)
 

w.h.i.p.p.e.t

Registered User
My filter was clogged up, and needed this after finding front wheel spinning under acceleration!

Got the pump learn done at Indy for £30, only then to find out can be done via odb eleven!


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Looks like it's not only possible via VCDS. Handy if someone already has OBD11 :icon thumright:
 
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