Where is the pre-collision sensor on a Toyota Tundra?
The pre-collision sensor is located behind the front bumper in the center, with the accompanying camera mounted on the windshield near the rear-view mirror. These components work together as part of Toyota Safety Sense to detect potential collisions.
In Toyota Safety Sense, the pre-collision system uses a forward radar sensor and a camera to monitor the road ahead. The radar unit sits behind the lower portion of the front bumper in a protective housing, while the camera is mounted high on the windshield, just behind the rear-view mirror. Together, they provide forward-scanning coverage to warn the driver and, if needed, apply braking.
For quick reference, here are the key components and their locations:
- Radar sensor: Located behind the center of the front bumper, housed in a protective unit behind the lower grille opening.
- Front camera: Mounted on the windshield, near the top center behind the rear-view mirror, facing outward to identify objects, pedestrians, and lane markers.
These sensors work together to deliver forward-collision warnings and automatic braking when conditions require. If you notice a warning light or suspect misalignment after body work or windshield service, have a dealership or qualified shop inspect and recalibrate the system.
Notes on servicing and alignment
Because the PCS sensors rely on precise alignment, any bumper removal, repainting, or windshield replacement can necessitate recalibration. Always refer to the owner's manual or a certified technician for your model year, and ensure calibration is performed after any servicing that could affect sensor alignment.
Visual clues you can check safely
Look for a small rectangular sensor housing in the center of the lower front bumper and a camera window behind the windshield near the rear-view mirror. Do not attempt to adjust or tamper with these components yourself; improper handling can affect system performance.
Summary
In the Toyota Tundra, the pre-collision sensor is primarily a radar unit tucked behind the center of the front bumper's lower area, paired with a front-facing camera mounted on the windshield near the rear-view mirror. Together, these sensors support the vehicle’s forward-collision warnings and automatic braking under Toyota Safety Sense. Proper maintenance and a proper calibration after any body or glass work are essential to keep the system functioning correctly.
How to reset Toyota pre-Collision System?
To reset a Toyota pre-collision system malfunction, you can try a few things, starting with the simplest: clean the sensors and camera, perform a hard reset by disconnecting the battery, or try driving straight to allow the system to recalibrate. If these fail, the issue may require a professional diagnosis, as it could be a faulty fuse, wiring problem, or a need for a software update or recalibration with specialized tools.
Self-service options
This video demonstrates how to clean the sensors and perform a system reset: 44sHow To DIY Moore YouTube · Oct 9, 2024
- Clean the sensors: A common cause is dirt or debris on the radar sensor behind the Toyota emblem on the grille or the camera on the windshield in front of the rearview mirror. Clean the area with a soft cloth and a glass cleaner or Windex to remove any obstructions.
- Hard reset the battery: Disconnect both battery terminals, starting with the negative one. Then, touch the disconnected positive and negative cables together for about 15 seconds to drain any remaining power. Reconnect the positive cable first, then the negative. Some suggest leaving the battery disconnected for up to 30 minutes or more to be sure.
- Drive to recalibrate: After a reset, some systems require a simple recalibration. Drive the vehicle straight for an extended period of time at a consistent speed (above 404040 kph or 252525 mph, for example) to allow the system to recalibrate itself.
- Check fuses: Use a test light to check all relevant fuses, especially if a power surge may have occurred. A blown fuse may need to be replaced.
Professional service
This video explains how to diagnose a pre-collision system malfunction with a professional tool: 1mDashboard warning lights YouTube · Sep 4, 2025
- Use a diagnostic tool: If self-service steps don't work, a professional scan tool like Toyota Techstream may be needed to clear error codes and perform sensor recalibration.
- Visit a dealer or mechanic: A technician can properly diagnose the issue, which could be anything from a misaligned sensor to a faulty brake actuator or other electrical component.
Where is the radar sensor on a Toyota Tundra?
It's the rectangular black thing in the middle grill at the bottom. If there's frost on your windshield clean that off too and the four sensors while you're at it. The rectangular thing is your radar. Used for pre collision and cruise control.
How to turn off pre-Collision System on Toyota Tundra?
An option to disable the Pre-Collision System should be available. Certain models feature a button located near the steering wheel that allows you to temporarily disable it. Once you've finished parking, the system will automatically reactivate when you restart the vehicle.
Where is the pre-collision sensor located?
The pre-collision assist sensor is typically located in one of two places: a radar sensor behind the front bumper/grille and a camera near the rearview mirror on the windshield. The radar sensor is often in the center of the lower grille, behind a fascia cover. The system relies on both sensors, so it's important to keep both the front grille area and the windshield area in front of the camera clean.
This video shows how to troubleshoot and clean the sensors: 56sCarnivautoYouTube · Aug 29, 2025
- Radar Sensor: Located behind the front bumper or in the grille, often behind a plastic fascia cover in the center of the lower grille.
- Camera: Located on the inside of the windshield, near the rearview mirror.
You can watch this video to see where the sensors are located: 1mNexologyYouTube · Aug 17, 2025
