Parts for your 2019 Toyota Land cruiser-Temperature sensors

2019 Toyota LandCruiser temperature sensors: what they do and how to look after them

Temperature sensors are absolutely fitted to the 2019 Toyota LandCruiser 200 Series and are central to how it runs. Toyota’s factory literature confirms this, including the Toyota Repair Manual (Engine Control – 1VD‑FTV), the Electrical Wiring Diagram (EWD) for LandCruiser 200, and the New Car Features (NCF) manual for the 200 Series. These documents detail multiple sensors: the engine coolant temperature (ECT) sensor, intake air temperature (IAT, integrated with the MAF), ambient air temperature for the climate control and dash display, automatic transmission fluid (ATF) temperature (in the valve body), and several exhaust gas temperature (EGT) sensors used by the diesel’s DPF system.

On the Aussie and Kiwi–market 1VD‑FTV V8 diesel, these sensors help the ECU manage cold starts and glow timing, fuel delivery, fan operation, EGR/DPF control, and the dash temperature gauge. They also inform the transmission control module for shift strategy and protection when towing or working hard off-road. Without accurate temperature data, the LandCruiser can run rich, overheat, shift poorly, or refuse DPF regens.

• Key sensors on the 2019 LandCruiser 200: ECT, IAT/MAF, ambient air temp, ATF temp (internal), and multiple EGT sensors for the DPF.

There’s no fixed replacement interval for temperature sensors