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Home >> Lexus >> 2022 >> LS 500h RWD >> Repair and Diagnosis >> Accessories & Equipment >> Seats >> Seat Vibration System - Diagnostics (2 Of 2) & Symptom Tests >> Seat Vibration System >> Does not Warm [10/2017 - ] >> Description

Does not Warm [10/2017 - ]: Description

The rear power seat switch (rear multi operation panel) sends switch operation signals to the position control ECU assembly via LIN communication. The position control ECU assembly that receives the signals operates the refresh seat functions by controlling the seat check valve, lumbar support pump and rear seatback heater.

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