15MDX, thanks for the added research. Interesting.Huh? It is a translation of a Chinese article.
Ok. Here's another link just in case you are still blinded: Jaguar Land Rover Recalls 36,000 SUVs in China After Media Exposé * - The Quint
Just in case you have trouble with link:
"On Friday, Jaguar Land Rover said in a statement it is recalling 36,451 Evoques from model years 2014 and 2015 due to software-related complaints including “poor gear shift quality, increased transmission noise and the inability to select drive when the vehicle is restarted under certain conditions.”
Jaguar Land Rover said it will upgrade gearbox software free of charge, and extend the warranty period of affected gearboxes to 7 years after the date of purchase from 3 years, or 240,000 km rather than 100,000 km, whichever comes first."
Interesting is that the recall also said something about inability to select DRIVE...didn't that happen to YOU, E92Vancouver???? Yikes!
For the Acura old-timers, this whole extension of powertrain warranty sounds all too familiar....
Software update...and extended powertrain warranty...why would a software fix lead to extended warranty...unless the software fix is a cover-up for a design flaw??
At least the ZF 9 HP in Acura's has been reworked to their specs, with Acura's own shift logic. Also, the transmission in the MDX is the latest version of the 9 HP, coming out 2 years after the 9 speed in the Land Rover.
As I mentioned before, when my transmission warning light came on, I was flustered and when trying to put it in gear, may not have pressed the brake.
After 2 months and several thousand kilometres, the transmission has been great. Shifts smooth and shifts fast.
The shift pause you describe is from 9th to 4th and is very insignificant. 90% of the people would not notice it. If it did bother you, you could run the car in sport mode which keeps the transmission out of the last 2 over drive gears in passing situations. I have only noticed this pause when in top gear and doing a wide open throttle pass. It is different but it is minor.
On wide open accelerations there is no pause while the transmission shifts sequentially on the 9 speed.
Recall on the 6 speed, there is pause while the transmission downshifts, but because the engine is screaming while the clutches engage, it feels like you are moving forward but you are not really accelerating until the shift on the 6 speed is completed. This was the experience on my 6 speed.
I believe dog clutches are here to stay. The transmission are smaller, lighter and you don't have the drag torque of a clutch pack. This results in more power to the wheels and better fuel economy.
When a high mileage automatic transmission starts to slip and not shift it is usually due to worn clutch packs. The fiber disks in a clutch pack are always subject to drag friction when they are not hydraulically braked. Hence one of the attractions to dog clutches.
Dog clutches have been used in motorcycles and racing gear boxes because of their efficiency. They are also used extensively in heavy duty truck transmissions.
Acura sold 5,000 MDXs last month. I think they are pretty happy.