wiltedjoint

I have a 2019 S5 with 67k miles. At what mileage should I do a transmission fluid change? Also, does anyone know the approximate cost for this?

Liquid Smoke

So Audi's maintenance guide doesn't specify the fluid change, they call it lifetime. But ZF, the manufacturer of the transmission, recommends I believe around 50-70k miles somewhere there, so you're at a good point to do it now. Someone else can chime in with more accurate cost and details, but I'd estimate maybe a few hundred, within $500 seems reasonable, the fluid itself is pretty expensive.

SMac770

For the type 0D5, same as the type 0BK and 0B6 before it, Audi says never, "lifetime fill".
ZF, who actually makes it, says between 80k and 120k km (50 - 75k miles) depending on driving style, after 8 years at the most.

There should be plenty of kit info out there on the usual parts stores for the type 0D5 (Audi AL552-8Q, ie ZF 8HP65A) using in the B9, with its plastic pan and integrated filter.
Not to be confused with the type 0BK (Audi AL551-8Q, ie ZF 8HP55A) used in the B8, with its metal pan and separate filter, when you're looking at the kits.

rs5and12e

Not sure if the RS5 and S5 share exactly the same ZF, but for the RS5 per Audi's maintenance recommendations, its at 60k.

Drives

I did a service in my ZF box on my last car at 50K. It had a remap so just being cautious.

They told me the oil was clear. In a good state. Essentially it didn't need changing yet.

Cost me £550

DaveSNJ

And, in the US, you might need to use an independent Audi shop. I don't think dealers will do the fluid swap, but don't hold me to this.

2DaLab

That’s interesting. For the S tronic, it’s at 40k, and covered by AudiCare.

SMac770

The B9 S and RS both use the 0D5 (8HP65A), but not the exact same 0D5 (different mechatronics programming, at least).

Audi doesn't have an ATF change interval for the 0D5 in any model. The 60k miles entry you see for the RS is for the sport diff, which has both gear oil and ATF (for the side clutches). Oddly, Audi forgot to include that line item, which is in the PDF document, on the web site: https://maintenance.audiusa.com/#/audi

Liquid Smoke

yea the maintenance schedule only shows trans fluid changes for the S-Tronic, applies to the R8, RS3, and the rest are just all the A models, no other S or RS model there. i guess for those bigger more expensive S/RS trans they just dont want to bother, and maybe make more profit servicing/replacing them long term.

rs5and12e

Would be nice to see a how to posted at some point on this forum regarding both diff and transmission.