Forward Collision Warning System Light
What it means
Usually shown as two cars, or a car with a star or exclamation mark ahead of it, the symbol varies a lot between makes. A steady amber light means the collision warning and automatic braking system is off or temporarily unavailable, for example because the sensor is dirty; a flashing red alert with a sound means a collision risk, so brake now. It is normal for it to glow briefly at key-on and then go out.
Symptoms4
- A steady amber light or a system unavailable message.
- Adaptive cruise control or lane assist also stops working on some cars.
- A red alert and a sound when closing in fast on a car ahead.
- The system returns by itself once the weather improves or the sensor is cleaned.
Possible causes6
- Dust, mud or insects covering the radar in the front grille or the camera behind the windshield.
- Dust storms, heavy rain, fog or direct sunlight blocking the view.
- A camera overheating in the sun, so the system pauses itself on some cars.
- The system switched off in the settings menu.
- Radar or camera aim knocked out by an accident, or a windshield or bumper replaced without calibration.
- A failed radar, camera or wiring.
How to diagnose5
- Read the display message, which often names the cause, such as a dirty sensor.
- Gently clean the badge or grille in front of the radar and the glass in front of the camera.
- Make sure the system is enabled in the settings menu.
- If the light stays on in good weather, read the module codes with a scan tool that supports it.
- The workshop checks sensor aim and calibration, especially after an accident or windshield replacement.
How to fix6
- Clean the radar and camera area and remove any sticker or cover in front of them.
- Wait for the weather to clear or temperatures to drop; many cases clear by themselves.
- Enable the system in the settings menu if it was off.
- Calibrate the radar or camera after a windshield replacement or bumper repair.
- Repair the wiring or replace the faulty sensor with calibration.
- Confirm the light goes out and the system shows as available.
Repair cost
In Saudi riyals; the highlighted part is the expected range for this fault.
Many cases cost nothing beyond cleaning; the range starts with a check and calibration and reaches the upper end when a radar or camera must be replaced and calibrated.
Prices are rough estimates for common cars at independent workshops and vary with the car and the source of the part.
Prices last updated: September 2026
Frequently asked questions
Can I drive with the system off?
Yes, the car and brakes work normally, but you lose the warning and automatic braking, so keep a safe following distance and stay alert.
Why does the system switch off in dust storms?
Dust covers the radar or blocks the camera's view, so the system pauses itself to avoid wrong decisions; it usually returns once visibility improves or the sensor is cleaned.
Do I need calibration after a windshield replacement?
Yes, on cars with the camera behind the windshield; the correct aim is essential for the system to work accurately.
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This guide is for information only and does not replace an inspection by a qualified technician. If the fault involves brakes, steering, engine temperature, electrics or refrigerant, do not attempt the repair yourself.
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