Operation not Accepted Even If Air Conditioning Switch is Operated [08/2023 - ]: Description

WARNING: This page is about a different car, the 2025 Lexus RX 450h+ and 2024 Lexus RX 450h+. However, it is still accessible from the selected car via links, so may be relevant.

for Front Air Conditioning Control:

If the air conditioning system cannot be operated using the radio and display receiver assembly, the following factors may be the cause.

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

for Rear Air Conditioning Control:

If the air conditioning system cannot be operated using the rear seat heater switch, the following factors may be the cause.

Symptom	Factor
Air conditioning system cannot be operated using radio and display receiver 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 rear seat heater switch Short to +B or ground in air conditioning amplifier assembly circuit Air conditioning amplifier assembly malfunction Rear seat heater switch malfunction Harness or connector