Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Front Impact Sensor (Certain Markets And Models Only)
The frontal impact sensors are used to provide the supplemental restraint system module (SRS) with advance information about the collision pulse. This enables the control module to determine more accurately the components to be activated.
The frontal impact sensors have integrated logic which transmits acceleration data to the supplemental restraint system module (SRS).
The front impact sensors transmit continuous signals to the control module to indicate that they are working. In the event of a fault in a frontal impact sensor, a fault signal is transmitted to the control module which then stores a diagnostic trouble code (DTC). A diagnostic trouble code (DTC) is also stored if the communication between the control module and one of the frontal impact sensors does not function. Each frontal impact sensor has a software ID. The ID is used to check that the correct frontal impact sensor is installed.
Data is transmitted on the same cable used for power supply.
The two frontal impact sensors are inside the left and right-hand headlamps.
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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