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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> Suspension >> Wheels & Tire System >> Tire Pressure Warning System - Diagnostic Codes, Symptom Tests & Circuit Tests >> Tire Pressure Warning System >> DTC C2121: Transmitter ID 1 not Received (Main); DTC C2122: Transmitter ID 2 not Received (Main); DTC C2123: Transmitter ID 3 not Received (Main); DTC C2124: Transmitter ID 4 not Received (Main); DTC C2125: Transmitter ID 5 not Received (Main); DTC C2181: Transmitter ID 1 not Received (for Test Diagnosis); DTC C2182: Transmitter ID 2 not Received (for Test Diagnosis); DTC C2183: Transmitter ID 3 not Received (for Test Diagnosis); DTC C2184: Transmitter ID 4 not Received (for Test Diagnosis); DTC C2185: Transmitter ID 5 not Received (for Test Diagnosis) [12/2019 - 11/2023] >> Caution / Notice / Hint

Caution / Notice / Hint

NOTE:
  • When replacing the tire pressure warning ECU and receiver or tire pressure warning valve and transmitter, read the transmitter IDs and number of the transmitters (4 or 5) stored in the old ECU using the GTS and write them down before removal.
  • It is necessary to perform initialization. Refer to INITIALIZATION [12/2019 - 11/2023] after registration. Refer to REGISTRATION [12/2019 - 11/2023] of the transmitter IDs into the tire pressure warning ECU and receiver if the ECU and/or one of the valve and transmitters has been replaced.
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