WARNING
  The system does not replace the parking brake. When you leave your vehicle, always apply the parking brake. Failure to leave your vehicle securely parked may lead to a crash or injury. See  Electric Parking Brake
  You must remain in your vehicle when the system turns on. At all times, you are responsible for controlling your vehicle, supervising the system and intervening, if required. Failure to take care may result in the loss of control of your vehicle, serious personal injury or death.
  The system will turn off if a malfunction is apparent or if you rev the engine excessively. Failure to take care may result in the loss of control of your vehicle, serious personal injury or death.

The system makes it easier to pull away when your vehicle is on a slope without the need to use the parking brake.
When the system is active, your vehicle remains stationary on the slope for two to three seconds after you release the brake pedal. This allows time to move your foot from the brake to the accelerator pedal. The system releases the brakes automatically once the engine has developed sufficient drive to prevent your vehicle from rolling down the slope. This is an advantage when pulling away on a slope, for example from a car park ramp, traffic lights or when reversing uphill into a parking space.
Note:  The system only functions when you bring your vehicle to a complete standstill with the vehicle in an uphill gear (for example, second (2) when facing uphill or reverse (R) when facing downhill).
Note:  There is no warning light to indicate the system is either on or off.
Using Hill Start Assist
  1. Press the brake pedal to bring your vehicle to a complete standstill. Keep the brake pedal pressed.
  1. If the sensors detect that your vehicle is on a slope, the system activates automatically.
  1. When you remove your foot from the brake pedal, your vehicle remains on the slope without rolling away for about two to three seconds. This hold time automatically extends if you are in the process of driving off.
  1. Drive off in the normal manner. The system releases the brakes automatically.
Note:  When you remove your foot from the brake pedal and press the pedal again when the system is active, you will experience significantly reduced brake pedal travel. This is normal.
Switching the System On and Off
Vehicles with Manual Transmission
You can switch this feature on or off in the information display. The system remembers the last setting when you start your vehicle.
Vehicles with Automatic Transmission
You cannot turn the system on or off. When you switch the ignition on, the system automatically turns on.