Hi,
I am going to change the haldex oil in my 99v S3.
Could you tell me if the oil is a special Haldex oil or something like an EP90??
Also where are the drain and level bungs & where is the haldex oil filter located on the diff?? as I am going to change this also.
Many Thanks, James.
Haldex oil
RE: Haldex oil
I 'Believe' you need a special tool to change the haldex oil on the S3/TT, otherwise it is a right 'Ballache' to get the new oil in as I think the oil is supplied in a cartridge and needs 'pressing' in.
M3 CSL - Silver Grey, a few options.
Haldex Oil/Filter Change
Haldex Oil Change
Haldex Oil should be changed every 20K miles. You just need a tube of oil P/N G 052 175 A1, Tool VAG1628 (Silicone Gun, basically), and an allen key. So no special tools required really.
The drain plug is located on the bottom of the Haldex unit, which is located just ahead of the rear diff. Use an allen key (I can’t remember what size, maybe 5mm) to undo the drain plug and catch the fluid in a container. Only about 300mm of oil will come out, as you don’t actually completely change all the oil, only part of it.
To refill, put the tube of oil into your silicone gun, hold it upright and cut the tapered tip off of the tube, leaving the threaded part, and screw the nozzle onto the end. Here comes the tricky part. You have to refill the Haldex unit through the drain plug. Yes, honestly!
Hold the trigger of the silicone gun in one hand, and the drain plug in the other (I normally do a practice run on refitting the drain plug first). Stick the nozzle of the Haldex tube into the drain plug, so that goes straight into the drain hole and fits tightly. Pull on the gun trigger repeatedly to squirt all of the oil into the Haldex unit. When you can’t squeeze any more oil out of the tube and the tube is empty, quickly pull out the tube nozzle and put the drain plug back in, trying not to let too much oil run down your arm. Tighten up the drain plug and you’re done.
Haldex Filter Change
The Haldex filter should be changed every 40k miles. The filter is located on the RHS of the Haldex unit. You will need Tool T10066 for this job, the filter itself P/N 02D 525 558, and the filter sealing ring P/N N 903 445 01. The filter tool is a large ring spanner with a 90° bend in it.
To change the filter, just poke the T10066 through to the filter head, and undo it. Make sure you remove the old sealing ring, and replace both filter and ring.
The original filter body is made of metal, whereas the replacements are made of nylon. If you’ve had main dealer servicing since your car was new, don’t be surprised if it still has the original metal Haldex filter. Like the fuel filter, these things tend to get left undone.
HTH
Haldex Oil should be changed every 20K miles. You just need a tube of oil P/N G 052 175 A1, Tool VAG1628 (Silicone Gun, basically), and an allen key. So no special tools required really.
The drain plug is located on the bottom of the Haldex unit, which is located just ahead of the rear diff. Use an allen key (I can’t remember what size, maybe 5mm) to undo the drain plug and catch the fluid in a container. Only about 300mm of oil will come out, as you don’t actually completely change all the oil, only part of it.
To refill, put the tube of oil into your silicone gun, hold it upright and cut the tapered tip off of the tube, leaving the threaded part, and screw the nozzle onto the end. Here comes the tricky part. You have to refill the Haldex unit through the drain plug. Yes, honestly!
Hold the trigger of the silicone gun in one hand, and the drain plug in the other (I normally do a practice run on refitting the drain plug first). Stick the nozzle of the Haldex tube into the drain plug, so that goes straight into the drain hole and fits tightly. Pull on the gun trigger repeatedly to squirt all of the oil into the Haldex unit. When you can’t squeeze any more oil out of the tube and the tube is empty, quickly pull out the tube nozzle and put the drain plug back in, trying not to let too much oil run down your arm. Tighten up the drain plug and you’re done.
Haldex Filter Change
The Haldex filter should be changed every 40k miles. The filter is located on the RHS of the Haldex unit. You will need Tool T10066 for this job, the filter itself P/N 02D 525 558, and the filter sealing ring P/N N 903 445 01. The filter tool is a large ring spanner with a 90° bend in it.
To change the filter, just poke the T10066 through to the filter head, and undo it. Make sure you remove the old sealing ring, and replace both filter and ring.
The original filter body is made of metal, whereas the replacements are made of nylon. If you’ve had main dealer servicing since your car was new, don’t be surprised if it still has the original metal Haldex filter. Like the fuel filter, these things tend to get left undone.
HTH
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confusionhunter
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RE: Haldex Oil/Filter Change
Thats some top information!!! Useful for all S3, R32, V6 4wd owners!!
Mark.
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