If the vehicle is stationary on a steep, slippery slope, it may begin to slide, even with the brakes applied. Without wheel rotation, the Anti-lock Braking System (ABS) cannot determine vehicle movement. To counteract this, briefly release the brake pedal, allowing wheel rotation. Re-apply the brake pedal to allow the ABS to gain control.
The vehicle needs to be in Neutral (N) or an appropriate gear to descend the slope. The Electric Parking Brake (EPB) must not be applied.