Gradient Detection

The transmission control is fitted with a gradient detection function in shift lever positions D and SD. It detects whether the vehicle is travelling uphill or downhill by comparing the engine torque and the selected gear on the one hand, and wheel speed on the other.

When travelling uphill, the controller selects the gear which best provides the vehicle with sufficient reserves of traction.

When travelling downhill, the gear is held after use of the brake or a manual downshift. The transmission changes down when brake use is detected.