Had the gearbox adaptations checked today on ISTA+ software and clutch C, E and KO seem to outside the normal range. For reference I was told anything under 100 was normal.
Code:
Current adaptation values of the automatic transmission:
Clutch fill pressures:
Clutch A: - 24.0mbar
Clutch B: -18.0mbar
Clutch C: -256.0 mbar
Clutch D: -34.0 mbar
Clutch E: -241.0mbar
Clutch K0: 132.0 mbar
Clutch IAE: 0.0
Had the adaptations reset but the problem did not go away.
This issue clearly needs more investigation but from here logically thinking:
1. Change the gearbox oil, checking:
i. Pan check for metal.
ii. Valve body (houses mechatronic and solenoids). Replace if needed, if that fails
2. Drop gearbox and send for full re-conditioning.
Can anyone else offer other suggestions?