22 LS430 − NEW FEATURES 2) Road Condition Support Control Under road condition support control, the ECM determines throttle valve opening angle and the vehicle speed whether the vehicle is being driven uphill or downhill. To achieve an optimal drive force while driving uphill, this control prevents the transmission from up-shifting to the 4th or 5th or 6th gear. To achieve an optimal engine brake effect while driving downhill, this control automatically downshifts the transmission to the 5th or 4th or 3rd gear.
2 6th 4th 5th 3rd 5th 4th 5th (Brake Operating) 6th without Control with Control 6th 4th 3rd 4th 3rd 4th 5th 6th 259LSK70 3) Driver’s Intention Support Control Estimates the driver’s intention based on the accelerator operation and vehicle condition to switch to a shift pattern that is well-suited to each driver, without the need to operate the shift pattern select switch.