Where is the pre-collision assist sensor located?
The pre-collision assist sensor is typically located at the front of the vehicle, usually integrated into the bumper or grille area (radar sensor), with a forward-facing camera often mounted behind the windshield near the rearview mirror. Exact placement varies by make and model.
In essence, the system relies on a radar sensor for distance measurement and, in many cases, a camera to interpret the road scene. Manufacturers place these components to maximize forward visibility while protecting them from damage and debris, which leads to variation across vehicles and brands.
Typical sensor locations in modern vehicles
Common locations you may find the pre-collision assist sensors include the following:
- Front bumper area: radar sensor housed behind the bumper cover or within the lower grille, often centered.
- Front grille or air intake region: some designs place the sensor closer to or behind the grille for protection and improved reception.
- Windshield area: a forward-facing camera mounted behind the rearview mirror provides visual data for the system.
- Multiple sensors: certain models use more than one radar sensor (and sometimes multiple cameras) to enhance detection and coverage.
In practice, the primary sensor is usually at the front center, with the camera positioned higher up near the windshield. The exact arrangement depends on the vehicle’s architecture and safety system design.
Brand- or model-specific notes
To locate the sensor on a specific car, consult the owner’s manual or contact the dealer. If the vehicle has undergone recent repairs or has a sensor fault, diagnostic checks will identify if any sensor alignment or obstruction issues are present.
What to do if the sensor seems to misbehave
Keep the sensor areas clean and unobstructed; remove snow, ice, or debris from the bumper, grille, and windshield vicinity. If you experience unexpected braking or a failure to detect objects correctly, arrange a professional diagnostic with a dealer or authorized service center.
Summary
While the exact location can vary, the pre-collision assist sensor is typically found at the front of the vehicle—primarily in the bumper/grille area for radar sensing—with a forward camera mounted behind the windshield. For precise placement, refer to the specific model’s manual or consult the manufacturer.
