Surprise: It's Normal
I booked the IS-F in to the dealer and surprise, surprise ... the behavior is NORMAL!
Although the steepest grade at the dealership was about half that of my driveway, the car dutifully thunked its way into R from P. This occurs if the emergency/foot brake is NOT engaged and the car has rolled forward onto the transmission parking pin.
The service manager tried it on other vehicles and more surprises ... every Lexus did it! He even tried a LS ... same engine and transmission in many ways ... and it thunked too.
Most amazing to me, the Toyota Camry loaner I was given also thunked!
Try it on your IS-Fs but be warned: the steeper the grade, the more alarming the resulting thunk.
I booked the IS-F in to the dealer and surprise, surprise ... the behavior is NORMAL!
Although the steepest grade at the dealership was about half that of my driveway, the car dutifully thunked its way into R from P. This occurs if the emergency/foot brake is NOT engaged and the car has rolled forward onto the transmission parking pin.
The service manager tried it on other vehicles and more surprises ... every Lexus did it! He even tried a LS ... same engine and transmission in many ways ... and it thunked too.
Most amazing to me, the Toyota Camry loaner I was given also thunked!
Try it on your IS-Fs but be warned: the steeper the grade, the more alarming the resulting thunk.
