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Home >> Lexus >> 2021 >> UX 200 Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Seats >> Seat Heater System (Diagnostic Codes & Symptom Tests) >> Seat Heater System >> DTC B14B5: Lost Communication with Front Seat Temperature Adjustment Switch LIN [10/2018 - 07/2022] >> Description

DTC B14B5: Lost Communication with Front Seat Temperature Adjustment Switch LIN [10/2018 - 07/2022]: Description

The refreshing seat switch communicates with the air conditioning amplifier assembly via LIN communication.

If the LIN communication system is malfunctioning, the air conditioning amplifier assembly will not operate even if the refreshing seat switch is operated.

DTC No. Detection Item DTC Detection Condition Trouble Area
B14B5 Lost Communication with Front Seat Temperature Adjustment Switch LIN Lost communication with the refreshing seat switch
  • Refreshing seat switch
  • Air conditioning amplifier assembly
  • Wire harness or connector
  • ECU-IG1 NO. 2 fuse