Works fine, couldn't be any better. No reason not to shift from D to S at any speed or S to D. Nothing to the contrary in Manual either.
Owners Manual page 173.
Putting the vehicle in sport (S):
Provides additional engine braking and extends lower gear operation to enhance performance for uphill climbs, hilly terrain or mountainous areas. This will increase engine RPM during braking.
Provides additional lower gear operation through the automatic transmission shift strategy.
Provides gear selection more quickly and at higher engine speeds.
SelectShift Automatic Transmission:
Your SelectShift Automatic Transmission gives you the ability to change gears manually.
With your vehicle in drive (D), the paddle shifters provide temporary manual control. They allow you the ability to shift gears quickly, without taking your hands off the steering wheel.
You can achieve extensive manual control by pressing the sport (S) button.
Automatic Transmission Adaptive Learning:
This feature increases durability and provides consistent shift feel over the life of your vehicle. A new vehicle or transmission may have firm or soft shifts. This operation will not affect function or durability of your transmission and is normal. Over time, the adaptive learning process will fully update transmission operation. Additionally, the strategy must be relearned whenever the battery is disconnected or a new battery is installed.
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