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Forward Collision Warning
The car thinks you’re approaching traffic too fast — brake or steer.
What it means
A red or amber icon of a car with an impact star or radar waves in front of it, often with an urgent audible alert. The forward radar/camera has calculated that you’re closing on the vehicle ahead faster than is safe. Some systems will also apply the brakes automatically (AEB).
What to do
- 1Brake or steer immediately to increase the gap to the vehicle ahead.
- 2If it was a false alarm (e.g. a car turning off ahead), the light will go out once the risk passes.
- 3If the light stays on permanently, the sensor may be dirty or misaligned. Clean the front grille/number-plate area where the radar is mounted.
- 4Get it checked if it keeps triggering falsely — the sensitivity may need recalibration.
Likely causes
- •Genuine risk of collision (most common)
- •Dirty radar sensor or camera lens
- •Sensor misalignment after a minor bump or new number plate
- •Faulty radar or camera module
Rough UK cost
Usually free (it’s a warning). Sensor recalibration: £150–£400. Replacement: £500–£1,500.
Prices are a guide only — always get a written quote before any work.
Heads up: Carautonomy is for general guidance only. If your car is behaving oddly or any red light is on, get it inspected by a qualified mechanic.