Hello All,

I own a 2016 XC90 T8 Hybrid with just over 13,000 miles. Recently when accelerating above 30 mph, I have noticed that the transmission does not want to “shift to the next gear”. Instead the engine just races. It is the equivalent of driving a manual transmission and being stuck in first or second gear. This condition can happen at any time. It only seems to happen on flat surfaces. It happens when I have the car in the “hybrid” mode and the gear shift is in the “B” selection, which means every-time I take my foot off the gas, the individual wheels generate electricity to be stored in the onboard batteries.

This has happened about 4 times. If I stop the car and begin the acceleration process again, the car will shift smoothly. I brought the car to the dealership and it didn’t find any codes indicating a problem with the transmissions. The software that controls the transmission was “reset” and the most current software downloads were installed. The service writer admitted the new software may or may not have any impact on the shifting capability of the transmission. Still, after bringing the car in and being checked out by the dealer, this problem persists. It doesn’t happen all the time and there doesn’t seem to be any reason why the shifting gets stuck when and where it does. There is no transmission dipstick because the transmission is sealed and does not need to be serviced during the life of the transmission.

I know these cars are new, but if anyone has had a similar problem and can offer any advice, I would cheer!

Hugh