The collision sensor on most Honda Accords is located behind the front bumper, with airbag crash sensors at the left and right corners and the Collision Mitigation Braking System (CMBS) radar sensor mounted in the front area behind the grille. For safety-critical systems, only qualified technicians should handle or replace these components.
Understanding the sensor types
Honda’s Accord uses multiple sensors to detect collisions and manage braking and airbags. The following sections outline the common placements for these systems in many model years. Exact locations can vary by year and trim, so consult your owner's manual or a Honda service technician for model-specific details.
Airbag crash sensors (SRS)
Below are the typical locations for the front airbag crash sensors in many Accord models. These sensors are part of the Supplemental Restraint System (SRS) and detect deceleration to trigger airbags.
- Left front crash sensor: usually mounted behind the left lower bumper cover, near the headlight and/or inner fender area.
- Right front crash sensor: usually mounted behind the right lower bumper cover, near the headlight and/or inner fender area.
- Center/front crash sensor (where equipped): sometimes located behind the front bumper near the radiator support to monitor center impact.
These sensors are integrated with the vehicle structure and are often accessed by removing the bumper fascia or inner shields. Do not attempt to service them yourself unless you have proper training and tools.
Collision Mitigation Braking System (CMBS) radar sensor
The CMBS radar sensor works with the adaptive cruise control and pre-collision braking features. Its sensor is typically mounted in the front of the vehicle behind the bumper or the lower grille area, and is sometimes located behind the center portion of the bumper or near the radiator support behind a protective cover.
- Primary CMBS radar sensor: located behind the front grille or in the lower bumper area, generally centered or slightly offset to the vehicle’s midline.
- Support or auxiliary radar components (if present on certain trims): may be housed within the bumper assembly or behind adjacent trim pieces to protect the sensor from debris.
Because this sensor is critical for pre-collision braking and pedestrian detection, any damage to the bumper area or sensor housing should be diagnosed by a dealership or qualified auto technician.
What to do if you suspect a sensor issue
If the warning light for the airbag system or CMBS comes on, or you notice unusual braking behavior, schedule a diagnostic check with a Honda service center. Handling or replacing crash sensors requires specialized equipment and software calibrations to ensure proper function and system safety.
Summary
In a Honda Accord, front airbag crash sensors are typically tucked behind the left and right front bumper covers near the wheel wells or inner fender areas, while the CMBS radar sensor is mounted behind the front grille or lower bumper region. Model-year variations exist, so refer to the owner's manual or a certified Honda technician for exact locations and service procedures. Safety systems rely on precise calibration and protection, and non-professional work can impair system effectiveness.