freelander2 auto gear box slipping

freelander2 08 The gearbox has just started slipping in 2nd,3rd.It has new fluid (full flush)in it so I don't think its that.
I tried driving it manually and it seemed ok.
No noises and it changes ok in higher gears.
Reverse, park neutral all work.
Did a reset.
Can someone give me some ideas what to do next.

A full flush on a gearbox that has a good mileage isn't recommended.
The old fluid will contain an amount of clutch debris, which is abrasive and actually helps the clutch plates stick to each other.
A full flush removes these abrasive particles which often results in slippage which wasn't there before the flush was done.

Any luck getting this resolved?

Yes thanks it was the turbo pipe leaking (the small one at the front).
I did not know that a leaking pipe could cause all the problems.
Thanks

Thanks for letting us know. Loss of pressure would have felt like loss of power. So that may be why yer though the box was slipping.