Question 6637
When you are stopped on a hill and lift your foot off the brake pedal, how does the "Hill Holder" driver-assistance system respond?
- It brakes the vehicle, locking the drive wheels.
- It holds the vehicle in place, preventing it from rolling down the hill.
- It controls the vehicle's speed, maintaining a proper safe following distance.
Show answer and explanation
Correct answer: It holds the vehicle in place, preventing it from rolling down the hill.
When you're stopped facing uphill and move your foot from the brake to the accelerator, the car tends to roll backward, in the direction of the red arrow in the image. Hill Holder detects the slope and holds the car briefly, just long enough for you to move off without rolling. It doesn't lock the wheels, and maintaining a safe following distance is the job of adaptive cruise control.