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.
Passenger Presence System Rezeroing: Introduction
The passenger presence system (PPS) is a calibrated system that requires rezeroing when the system has been serviced or replaced. The procedures below are designed to assist in the rezeroing of the PPS. Before you start, read these procedures carefully and completely. For further information regarding the PPS refer to SIR System Description and Operation .
- Read this procedure carefully and completely.
- The PPS will not function properly if the PPS rezeroing procedure is not performed.
- Perform the Diagnostic System Check - Vehicle after successfully completing the rezeroing procedure to ensure the system is functioning properly.
- Replacement of the PPS module
- Installation of any seat accessories
- Removal and installation of the seat
- Illumination of both the air bag indicator and the passenger air bag OFF indicator
- After a collision
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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.