I was wondering if any one has noticed:
It seems to me that while operating in cruise control and a downgrade causes the vehicle speed to increase, at some point the transmission automatically starts to downshift to hold the vehicle back. Seems to only happen if you are completely off the throttle.
With the cruise set at 55 mph on a familiar secondary road, I came to a long down grade that eventually turns into a 45 mph zone and then becomes fairly steep as the speed limit drops to 35 mph entering a small town.
As I approach the 45 mph zone I begin clicking the cruise set (-) button to walk the cruise setting slowly down to 35 mph. Don't want to annoy the local fuzz. But wait! What is all this buzzing noise? Oh look, the tach is up over 4000 rpm. What the?????? So I tap the left paddle shifter. Now the RPMs jump to over 5000 rpm and the display indicates 3rd gear!
Now I see. It automatically down shifted from 6th to 5th, and it was still going too fast for the cruise setting so it dropped down to 4th gear. Then I hit the paddle shifter so it responded with 3rd gear.
Any one else notice this?
It seems to me that while operating in cruise control and a downgrade causes the vehicle speed to increase, at some point the transmission automatically starts to downshift to hold the vehicle back. Seems to only happen if you are completely off the throttle.
With the cruise set at 55 mph on a familiar secondary road, I came to a long down grade that eventually turns into a 45 mph zone and then becomes fairly steep as the speed limit drops to 35 mph entering a small town.
As I approach the 45 mph zone I begin clicking the cruise set (-) button to walk the cruise setting slowly down to 35 mph. Don't want to annoy the local fuzz. But wait! What is all this buzzing noise? Oh look, the tach is up over 4000 rpm. What the?????? So I tap the left paddle shifter. Now the RPMs jump to over 5000 rpm and the display indicates 3rd gear!
Now I see. It automatically down shifted from 6th to 5th, and it was still going too fast for the cruise setting so it dropped down to 4th gear. Then I hit the paddle shifter so it responded with 3rd gear.
Any one else notice this?