What it means
This code identifies a fault associated with the third row right seat belt sensor. The restraint control module sets it when it detects a problem with this sensor; the specific fault is identified by accompanying subfault information.
At a glance
- Usually lights the airbag (SRS) or body-system warning light
How it works
The third-row right seat-belt sensor or buckle switch reports that position's belt status to the restraint control module. The module checks the input and wiring for a fault; the accompanying subfault information specifies the condition it detected.
Common causes
Most likely first.
- Faulty third-row right seat belt buckle switch or sensor
- Damaged wiring or loose connector at the buckle
- Connector corrosion or poor electrical contact
- Fault in the restraint control module
Symptoms
- Airbag or seat belt warning light on
- Seat belt status may be misreported
How to diagnose it
- Read the B0058 subfault and freeze-frame data with a scan tool that can access the restraint control module.
- Check that the third-row right belt and buckle are not obstructed or damaged and that the buckle latches and releases.
- Inspect the right third-row buckle connector and wiring for corrosion, loose fit, pin damage, or pinching around moving or folding seat parts.
- Compare third-row right belt-status data while latching and unlatching the buckle.
- Test the buckle sensor and its circuit to the restraint control module using the manufacturer's procedure before suspecting module failure.
Common fixes
- Reconnect or repair damaged wiring at the third-row right buckle.
- Repair corroded or loose sensor connector terminals.
- Replace the faulty third-row right buckle switch or seat-belt sensor assembly.
- Repair or replace the restraint control module only after verifying its connections and the sensor circuit.
Can I keep driving?
The vehicle may be driveable, but the third-row right belt status may be misreported and the restraint system may not work as designed in a crash. Confirm the belt latches securely and have the warning diagnosed promptly.
A code shows where the control module detected a fault, not always which part failed. Check the causes in order and confirm with a test before replacing parts. Have several codes? Check them together
This is a generic code: it means the same on every make. The car’s maker may add more detail in its own service information.