Volvo XC70 2006 transmission issue

[amazighman]

Hi

I bought a volvo XC70 2006 model 200k miles with automatic transmission.

On short test drive it performed faultless.

However when i drove it back home and it warmed up it started shifting harsh 3rd gear mainly and 2nd slightly.

The transmission oil has never been changed , would that be the issue , is it worth doing a few sump dumps , I have some Toyota Type4 fluid which i think is 3309 compatible

Thanks

[mjk164]

I would change the oil. My 2009 V70 with Geartronic TF - 80SC has done about 186k miles and when I did the gear box oil about 1500 miles ago, using 3 dumps replacing exactly what I drained out (about 3 ltrs each time and quite dark), and Volvo recommended JWS3309 fluid, the gear change was like new and better smoothness throughout the rev range.

[Familyman 90]

Oil change and a software update are the usual places to start.

[amazighman]

Thanks for your inputs.

The strange thing is that its fine when cold ,as soon as you do around 10 miles or so when the car is warm , then the hard shift in 2nd and 3rd , and noticeable less seamless when shifting PNRD

Could be old oil is less viscous and loses its properties when warm...
I will try few sump dumps , oil is cheap anyway .

How much would software update cost at the stealers or Independent garages?

[Bonefishblues]

Symptoms start when things get towards hotter - longer test drives than the 5 min around the block are always recommended for this 'box for that reason

[amazighman]

I am hoping a fluid change might improve things , or should i not bother and just get rid.
Shame as the car is otherwise good .