Q: What does the hill-start assist control system do?

asked by on

What does the hill-start assist control system do?

The hill-start control system is designed to help keep you from rolling backward when you stop and then start again on a hill, or you’re driving in slippery conditions on a slope. Anyone who’s ever felt their stomach lurch as the car started to roll backward after stopping on a hill can appreciate this assistance. Here’s how the system works:

  • You have to have the transmission in gear (anything other than park).

  • The parking brake can’t be on.

  • You can’t be pressing the gas pedal.

  • If the system detects that you’re stopped on a hill, the brake pedal will automatically stay engaged when you take your foot off it. Your brake lights will stay on as well.

  • The system works for about two seconds – just long enough for you to get your foot to the gas pedal and start accelerating.

  • The slip indicator should flash once and a buzzer should sound when the system is active. If you don’t see or hear anything, let off on the brake a little (but don’t take your foot off until you see the light and hear the buzzer).

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. What does the hill-start assist control system do?

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Car hit by lightning and won't start.

You will need to have the vehicle towed to a dealer. I have seen many vehicles like this and in most cases, if not all, the computers in the vehicle get zapped and fried. I would recommend contacting your insurance...

Q: How do I use the console box in a 2012 Toyota RAV4?

Your car’s console box (or center console if you prefer) is designed to provide you with additional storage space. It also acts as an armrest for the driver and front passenger. There are actually two storage areas here – this...

Q: How do you turn the Park Aid system on or off?

While not all Fusions are equipped with the Park Aid system, if your car is, then you have an important tool for enhancing your safety. Simply put, the system is designed to give you an audible warning if it detects...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.