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Feature · 3 min read

Hill Top Assist Explained

Prevents the car from rolling backwards when pulling away on an incline.

What is Hill Top Assist?

Hill Top Assist (also called Hill Start Assist or Hill Holder) is a system that temporarily keeps the brakes applied after you release the pedal on an uphill slope, giving you time to move your foot to the accelerator without the car rolling backwards.

How does it work?

When the car is stationary on a slope and the driver releases the brake pedal, the system senses the incline through a sensor and holds the brake pressure for a few seconds — usually 2–3 seconds — or until the accelerator is pressed. Once the clutch (on a manual) or throttle (on an automatic) is engaged, the brakes release and the car pulls away smoothly.

What does it feel like?

You're stopped on a steep hill in traffic. Instead of frantically swapping feet from brake to accelerator, the car simply stays put. You calmly press the throttle and the car moves forward without any backward roll.

Benefits

  • Prevents rolling back on steep hills
  • Less stress in stop-start traffic on inclines
  • Smoother take-offs without riding the clutch
  • Useful for both manual and automatic cars

Limitations

The hold time is limited — if you hesitate too long, the brakes will release and the car may roll. It does not replace the parking brake for long stops. Very steep or slippery surfaces may still require extra care.

Can I turn it off?

Some vehicles allow Hill Top Assist to be disabled via a button or settings menu, though most cars keep it active as a default safety feature.

Heads up: Carautonomy is for general guidance only. Always check your vehicle handbook for model-specific details and limitations.

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