Parts for your 2016 Toyota Land cruiser-Temperature sensors

2016 Toyota Land Cruiser temperature sensors — what they do and how to look after them

Temperature sensors are absolutely used on the 2016 Toyota Land Cruiser (200 Series). Toyota’s own technical publications—the Land Cruiser 200 Series Repair Manual (RM), New Car Features (NCF), and the Electrical Wiring Diagram (EWD)—detail multiple temperature sensors, including the engine coolant temperature (ECT), intake air temperature (IAT), ambient air temperature, A/C evaporator temperature, automatic transmission fluid (ATF) temperature, and—on the 1VD‑FTV V8 diesel—exhaust gas temperature (EGT) sensors for DPF control.

On this model, temperature sensors keep the big Cruiser running sweet as. The ECT sensor tells the ECM how warm the engine is, shaping cold-start fuelling, idle speed, radiator fan logic, and even when the auto trans prefers to shift. The IAT sensor lets the ECU trim fuelling and timing based on actual air density. In the cabin, the climate control relies on ambient and evaporator temp sensors for steady, no-fuss A/C performance. Diesel variants lean on multiple EGT sensors to monitor turbo and DPF temperatures for safe operation and proper regeneration.

There’s no set replacement interval in Toyota’s schedules for these sensors, but they’re worth a look during regular servicing—especially on high‑kilometre or heavy‑towing vehicles. Smart checks include:

• Scan live data on a cold start: ECT and IAT should read close to ambient. Big disagreements suggest a drifting sensor.
• Inspect connectors and wiring looms for heat damage near turbos, DPF, and the radiator support, particularly after off‑road and water crossings.
• Watch for tell‑tales: hard cold starts, high idle, rich smell, poor economy, harsh shifts, lazy A/C, or frequent DPF regens.

When replacement is needed, stick with genuine or quality OE‑equivalent parts. For an ECT sensor, work on a cool engine, have fresh Toyota Super Long Life Coolant (pink) on hand, and refill/bleed the cooling system properly. Torque the new sensor to the spec in the repair manual and clear any fault codes before a warm‑up drive.

EGT sensors on the 1VD‑FTV can seize in the exhaust, penetrating oil and correct sockets help avoid damage. Refit with anti‑seize only if specified by Toyota. The ATF temperature sensor lives inside the transmission—diagnose carefully before committing, as replacement involves pan and valve body work. After any sensor change, verify with a scan tool that temperatures read plausibly and that the ECM and transmission adapt as expected.

• Does the 2016 Land Cruiser 1VD‑FTV have EGT sensors for the DPF?
  Yes. Toyota’s NCF and RM documents show multiple EGT sensors used to monitor exhaust heat upstream and downstream of the DPF. They help control regeneration timing and protect the turbo and catalyst from over‑temperature. If an EGT sensor drifts or fails, expect DPF regen issues, warning lights, or limp‑home behaviour. A scan tool will confirm with codes and live EGT readings.
• How can someone tell if the ECT sensor is playing up?
  Cold, key‑on readings should be close to outside temperature. If the ECT reads much warmer or colder than ambient at first start, the ECM will fuel and idle incorrectly. Common signs include rough cold starts, higher than normal idle, rich running, and a cooling fan that comes on too early. Typical codes include P0115–P0119, always verify wiring and connectors before swapping parts.
• Should temperature sensors be replaced preventively?
  Generally, no. Toyota doesn’t list them as consumables. Replace on fault, trend, or damage—though on high‑kilometre diesels that tow or see heavy heat cycles, pre‑emptive EGT sensor replacement can be pragmatic if data shows drift or intermittent faults. Good servicing practice is periodic data checks, loom inspections, and keeping heat shields in place.