I've just carried out an ATF fluid change on my 2015 Q5 as I had no proof of one ever being done. I bought the Meyle service  kit which came with 7ltr of fluid, external filter, inernal filter, magnets gasket and sump plug.

Followed the instruction video on youtube - https://www.youtube.com/watch?v=rjzTJx8RtWo and everything went as expected, except for one thing.

I finished topping up the box, but I only used a total of 5.5ltrs of ATF.

 

So my question is, have I mislaid 2.5ltr of oil in the gearbox? or is getting 5.5ltrs back into it about right for just a service fill up?

 

13 minutes ago, Mark M. said:

I've just carried out an ATF fluid change on my 2015 Q5 as I had no proof of one ever being done. I bought the Meyle service  kit which came with 7ltr of fluid, external filter, inernal filter, magnets gasket and sump plug.

Followed the instruction video on youtube - https://www.youtube.com/watch?v=rjzTJx8RtWo and everything went as expected, except for one thing.

I finished topping up the box, but I only used a total of 5.5ltrs of ATF.

 

So my question is, have I mislaid 2.5ltr of oil in the gearbox? or is getting 5.5ltrs back into it about right for just a service fill up?

 

Hi did you do the last part of the video and run the car checking the gearbox oil temp before doing the final top up I think thats probably a critical part of the service as it allows the mechatronics unit to purge air thus allowing the final top up, and are you sure your model uses 7l of oil a lot of these kits are generic and cover other gearboxes as well.

Steve.

I'm just going on what others have said regarding it being 7ltr, but I was wondering if 7ltr's is needed after a full teardown and rebuild.

I did the initial top up, then ran the car until VCDS showed the ATF temp to be about 35deg then I ran through each and every gear, holding each one for about 5-10sec before going on to the next. Shut it off then topped up again and realised I'd only got 5.5ltr back in.

Hmmm, this video - https://www.youtube.com/watch?v=SabrANKIrJQ states I should have left the engine running to do the very final level check.

As the car is still in the air I'll have another go tomorrow but with the engine running this time.

 

Well, this morning I got the car warmed up and the ATF temperature was reading 40deg after a painful 35minutes of idling while periodically slowly going through the gears.

While the engine was still running I unscrewed the fill plug and was able to get another 200-300ml of ATF fluid before it came dripping back out.

So with roughly 5.8ltrs of ATF back in it I took her for a spin and she was faultless, gears changed quickly and smoothly regardless of what drive mode I was in, even manual shifts.

So I'm going to take that as job done. Thankfully the rear diff only took 5min to change the oil.

Can i ask what oil you used for rear diff? Original audi stuff or Castrol ? Please share part numbers of original if you have one..thanks

I used this one - https://www.amazon.co.uk/dp/B006DHRA8O?ref_=pe_112168041_1111392281_t_fed_asin_title&th=1