Turns And Bends
When driving on a curve with ACC engaged, the system may decrease the vehicle speed and acceleration for convenience reasons, with no target vehicle detected.
Once the vehicle is out of the curve the system will resume your original Set Speed. This is a part of normal ACC system functionality.

See also:
To Accelerate For Passing
Press the accelerator as you would normally. When the pedal is released, the
vehicle will return to the set speed.
Using Electronic Speed Control On Hills
The transmission may downshift on hills t ...
Power-Up
After switching the ignition key from OFF to either the ON or ACC position, or
after a language change, you must wait at least five seconds prior to using the
system.
...
Tires
Examine tires for excessive tread wear and uneven wear patterns. Check for stones,
nails, glass, or other objects lodged in the tread or sidewall. Inspect the tread
for cuts and cracks. Inspect si ...


