9-Speed Auto Transmission (ZF 9HP) Glitches
ModerateGearbox & TransmissionThe 9-speed automatic can be jerky and hesitant, particularly in the lower gears. Early models suffered from poor software calibration.
Typical symptoms
- •Jerky downshifts into 2nd gear
- •Hesitation when accelerating from a standstill
- •Hunting for gears at motorway speeds
What to inspect before you buy
- ✓Check for TCM software update history
- ✓Test drive at low speeds and check for smooth shifts