Rear Panel Switch Operation not Accepted [12/2023 - ]: Description

WARNING: This page is about a different car, the 2024 Lexus TX 550h+. However, it is still accessible from the selected car via links, so may be relevant.

If the air conditioning system cannot be operated using the No. 2 air conditioning control assembly, the following factors may be the cause.

Symptom	Factor
Air conditioning system cannot be operated using No. 2 air conditioning control assembly (With the exception of the switch indicators, no inputs are reflected when other switches operated)	LIN communication malfunction between air conditioning amplifier assembly and No. 2 air conditioning control assembly Short to +B or ground in air conditioning amplifier assembly circuit Air conditioning amplifier assembly malfunction No. 2 air conditioning control assembly malfunction Harness or connector