Another transmission question

[Clan]

Originally Posted by Phil Croxley

I had the transmission serviced in Cornwall last Thursday, they did a flush and update. Annoyingly on the way back the over enthusiastic engaging of the transmission still happens going from park to drive and reverse, but as before, only occasionally. At least I've got fresh fluid now!

The bumping into gear D or R is low gearbox oil pressure at idle as it leaks out of the mainshaft seals internally, volvo came out with software fixes then which raised the oil pressure, this fixed a lot of gearboxes with a minor leak . Have you got the latest gearbox software? The fix in about 2014 was modified piston ring type seals on the main-shaft which requires the gearbox to Come out and removal of the oil pump assembly behind the torque converter for cases where the software is not enough... The dealers know all about this.

[Phil Croxley]

Originally Posted by Clan

The bumping into gear D or R is low gearbox oil pressure at idle as it leaks out of the mainshaft seals internally, volvo came out with software fixes then which raised the oil pressure, this fixed a lot of gearboxes with a minor leak . Have you got the latest gearbox software? The fix in about 2014 was modified piston ring type seals on the main-shaft which requires the gearbox to Come out and removal of the oil pump assembly behind the torque converter for cases where the software is not enough... The dealers know all about this.

Annoyingly it only happened once over 500 miles but I guess a main dealer rather than a specialist will have to look at it eventually.