Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual > Certification Ecu: Installation
INSTALLATION CAUTION / NOTICE / HINT NOTICE: Before replacing the certification ECU (smart key ECU assembly), refer to Registration. Click here PROCEDURE 1. INSTALL CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (a) Engage the 2 claws to install the certification ECU (smart key ECU assembly) as show ...
Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual > Air Conditioning System: PTC Heater Circuit
DESCRIPTION The air conditioning amplifier assembly sends operation signals to the PTC heater relays when quick heater assembly operation conditions are met. Based on the signals from the air conditioning amplifier assembly, the PTC heater relays turn on, and power is supplied to the quick heater as ...