Why You Might Need to Replace a TPMS Sensor

• Low or flat sensor battery
• Water or dust ingress
• Physical damage from road debris
• Sensor repeatedly dropping out
• Incorrect or unstable pressure readings

On touring setups, vibration and weather exposure are common causes of TPMS sensor replacement.

How to Replace an External TPMS Sensor

Step 1: Remove the Faulty Sensor

Unscrew the existing sensor from the valve stem. Check the valve for debris and ensure the thread is clean before installing the new sensor.

Step 2: Check the Seal

Inspect the O-ring or seal on the new TPMS sensor. A damaged seal can cause slow leaks.

Step 3: Install the New Sensor

Screw the new sensor onto the valve stem firmly by hand. Do not overtighten.

Step 4: Pair the Sensor to the Monitor

Follow your monitor’s pairing instructions. Assign the sensor to the correct wheel position, especially important for dual axle caravans.

Step 5: Confirm Readings

Check that pressure and temperature readings appear stable on the display. Take a short drive and confirm no dropouts.

Replacing an Internal TPMS Sensor

Internal TPMS sensor replacement requires removing the tyre from the rim. This is usually done by a tyre professional.

• Tyre must be deflated
• Tyre bead broken and removed
• Sensor unbolted from inside rim
• New sensor installed and torqued correctly

After installation, the sensor must be paired with the monitor and tyre rebalanced.

Common Problems After Replacement

• No reading: Re-check pairing sequence.
• Intermittent signal: Confirm battery strength and sensor seating.
• Slow leak: Inspect valve seal and threads.
• Wrong wheel alert: Reassign correct wheel position.

When Should You Replace TPMS Sensors?

Most external TPMS sensors last several years depending on use. Replace sensors if:

• Battery can no longer hold charge
• Water damage is visible
• Readings are consistently inaccurate
• The sensor body is cracked or worn

Need Replacement TPMS Sensors?

Explore caravan-ready TPMS sensors designed for Australian touring conditions.

Replacement TPMS Sensor FAQs

Can I replace just one TPMS sensor?

Yes. Most systems allow individual sensor replacement and pairing.

Do I need to rebalance the tyre after replacing an external sensor?

No. External sensors do not require tyre removal or rebalancing.

Why does my new TPMS sensor keep disconnecting?

Check pairing, battery strength, and ensure the sensor is properly seated on the valve stem.