2004 Volvo S60
Started to notice occasional hard shifting from 2nd to 3rd and downshifting 3rd to 2nd (specially on uphill for some reason).
finally a couple of days ago, while the external temp was about 100 deg and on an uphill, the downshifting from 3rd to 2nd jerked the car and I had to stop.
as a result :
1- the Check Engine
light came on
2- the red triangle with exclamation mark turned on
3- message says: Transmission Maintenance Required
I drove back home for 150 miles and the car shifted properly with no noticeable issues.
took it for a reading and the codes are : PO 700 (transmission control system) and PO 740
(Torque converter clutch).
Had it inspected by 2 mechanics but the difference in diagnostics (and price) was too steep that I wanted to get some opinions here
they will both charge me to open up the gearbox but one of them was adamant that it will be between $2,400 to $3,800.
the second mechanic said that it could be a sensor or less expensive repair but if he sees a lot of metal then it will indicate that a rebuild is needed.
thanks for your help!