If one wheel on the tire pressure monitor shows no data, start with the battery (for external sensors), then isolate whether it’s a pairing issue, a wheel/position issue, or a faulty sensor.

Applies to: Chigee Display TPMS, G3 TPMS

Step-by-Step (Do These in Order)

1. Replace the battery (External sensors first) — highest success rate

   • Model: Use BR1225A coin battery (user-replaceable).

   • Replace the non-working external sensor’s battery, re-install, and wait 1–2 minutes (or ride briefly) to wake it.

   • If it starts working after battery replacement → the old battery was depleted.

   • Tip: Check polarity, keep the O-ring clean, and hand-tighten the cap.

2. Re-pair (match) the sensor

   • Open the TPMS pairing screen and relearn the sensor for the position that shows no data.

   • Save and wait 1–2 minutes for the first reading (ride above ~20–30 km/h to wake the sensor if needed).

3. Swap front ↔ rear sensors

   • Physically swap the two sensors (front ↔ rear), then check readings again.

   • If the problem follows the same sensor → that sensor is likely faulty.

   • If the problem stays on the same wheel position → re-check pairing for that position; inspect the valve/core, wiring/receiver placement, and possible RF interference.

Internal vs External Sensor Battery Policy

• External Tire Pressure Sensors

  • Battery is user-replaceable → BR1225A.

  • Carry a spare; replace both front & rear if batteries are old to keep readings consistent.

• Internal Tire Pressure Sensors

  • Battery is not replaceable.

  • When depleted, you’ll need to purchase a new internal sensor (tire/wheel removal required for service).

Quick Checks (Helpful)

• Wake the sensor: Short ride to wake sleeping sensors.
• Valve & core: Ensure the valve isn’t leaking and the core is tight.
• Clearance & sealing: For external sensors, confirm no contact with spokes/brakes; O-ring intact.
• Interference: Test away from large metal objects/accessories that could block RF.