'01 V70xc... 140k.

Transmission doesn't seem to want to lock when in Park... Even the slightest hill requires some major reefing on the parking brake to keep it in position.

Other than the rolling in 'Park', transmission seems to be shifting well and responds quickly when downshifting for passing. Manual gear select also seems to be working just fine.

Hooked up my code reader... nothing lists for engine or transmission.

Any clues? Should I begin by doing a trans flush with Mobil 3309? Or could something be misaligned?

Thanks,
Ron