Tire Pressure Sensor: Service and Repair

REMOVAL

Tire Removal
1. Deflate tire & remove balance weights.

NOTE:
Sensor can be unscrewed before unseating the tire bead.

CAUTION:
- The tire bead should be broken approx. 90° from the valve side of the wheel. The bead breaker should not be set too deep.
- Avoid tire/tool contact with the valve on dismount.
- Dismount should end near the valve.





Sensor Removal

CAUTION:
Handle the sensor with care.

1. Remove the valve nut.





CAUTION:
The valve nut should not be re-used.

2. Discard the valve assembly.

INSTALLATION

Sensor Fit

CAUTION:
- Handle the sensor with care.
- Avoid lubricant contact.
- Ensure that the wheel to be fitted is designed for sensor mount. There should normally be a mark to indicate this.
- Ensure that the valve hole and mating face of the wheel are clean.

1. Slide the sensor-valve unit through the valve hole of the rim. Hold the sensor against the rim and the rubber grommet against the sealing surface.
2. Insert the nut over the valve stem and then tighten the nut.




3. Continue to tightening the nut until contact with the rim and then tighten to 3.5 - 4.5Nm.





CAUTION:
- Tighten slowly with quarter turn steps until the final torque is reached.
- Do not exceed allowed torque.
- Do not use electric or pneumatic tools.

4. Check that the sensor is firmly attached to the rim.

CAUTION:
Risk of damage during the tire installation/ removal if the sensor is not firmly attached to the rim.

Tire Fit

CAUTION:
Only use wheels designed to accommodate the TPMS sensor.

1. Lubricate the tire bead not the rim. Excessive lubrication should not be applied.
2. Mount the tire to the rim by referring illustration below.




3. Move the mounting tool away from the valve.

CAUTION:
Avoid tire / tool contact with the valve.

4. Finish with mounting tool near to valve.
5. Carry out inflation / pressure correction and then fit valve cap.

Sensor Initiating Procedure

NOTE:
The sensor's default state will be Storage Auto (High Line).

1. Change the newly installed sensor mode to Normal Fixed Base(Low Line) with the 'TPMS exciter'.





NOTE:
Mode (Status/option) of the sensor installed to the vehicle should be Normal Fixed Base (Low).




2. Read the four sensor's ids starting with sensor 1 (1 normally front left, 2 front right, 3 rear left, 4 rear right).

NOTE:
Note that sensors which were already configured as Base (Low Line) will take longer to read.








3. Connect 'TPMS exciter' to the diagnostic connector.




4. Register the four sensor's ids to the receiver.








5. Disconnect diagnostic link.
6. Cycle Ignition, (wait 15 seconds before turn Ignition back on) then related DTC should be erased from the receiver.

NOTE:
In order for the system to correctly monitor tires for under-inflation, there should be a total of exactly 4 sensors fitted to each of the four driven wheel positions. There should be no other sensors in the vehicle since this could cause the system to monitor the wrong sensors or fail to lean new sensor.

CAUTION:
Ensure that there are only 4 sensors in the vehicle.