Parts for your 2013 Toyota Wish-Temperature sensors

2013 Toyota Wish temperature sensors

Technical sources from Toyota’s service literature for the ZGE20/25 series Wish (with 2ZR‑FAE and 3ZR‑FAE engines), the Toyota New Car Features guide, and the Toyota Electronic Parts Catalogue confirm that the 2013 Toyota Wish does use several temperature sensors. These include the engine coolant temperature (ECT) sensor, intake air temperature (IAT) sensing (typically built into the mass air flow sensor), ambient air temperature for the A/C and display, evaporator temperature sensing, and an internal transmission/CVT fluid temperature sensor. So temperature sensors are absolutely relevant on this model.

On this Wish, temperature sensors help the engine computer and climate system make the right calls all day, every day. The ECT sensor tells the ECU how warm the engine is so it can sort fuelling, ignition timing, idle speed, cooling‑fan operation and the dash gauge. IAT helps dial in mixture and throttle response. The ambient and evaporator sensors let the A/C behave properly in Aussie and Kiwi conditions. The CVT’s fluid temperature sensor informs shift strategy and protects the transmission when things get hot.

There’s no fixed replacement interval for these sensors, they’re serviced on condition. If the ECT or IAT goes out of range, the check engine light will usually appear and you might notice hard cold starts, rich running, lazy performance, thermo fans stuck on, or the temp gauge acting odd. CVT temp issues can trigger limp mode or rough behaviour when hot. A scantool is your best mate here: on a cold morning, ECT and IAT should be close to ambient, at full operating temp the ECT will typically sit around 85–95°C in normal driving. If readings look wonky, confirm with an infrared thermometer and wiring checks.

When replacing the ECT sensor, use an OEM‑quality part, work on a cool engine, and have fresh coolant ready. The sensor usually threads into the water outlet on the cylinder head, it seals with a washer, so don’t use thread tape. Torque it to the spec in the Toyota repair manual, then refill and bleed the cooling system properly to avoid air pockets. For the IAT (inside the MAF), avoid harsh cleaners, if needed, use a proper MAF cleaner and let it dry fully. Keep connectors clean and pinned tight, and protect harnesses from heat and rub points. Sorted early, these little sensors save fuel, protect the engine and gearbox, and keep the cabin comfy.

• Common temperature sensors on the 2013 Wish: ECT, IAT (in MAF), ambient air temp, evaporator temp, CVT fluid temp.
• Typical fault codes to watch for: P0115–P0119 (ECT circuit/performance), P0110–P0114 (IAT circuit/performance).

Popular questions

Where is the engine coolant temperature sensor on a 2013 Toyota Wish?

On the 2ZR‑FAE/3ZR‑FAE engines it’s mounted on the engine’s water outlet/thermostat housing at the cylinder head end, with a two‑pin connector. Access is from the top once the engine cover is off. Always confirm by matching the sensor and plug shape to the parts diagram for your VIN.

Is the intake air temperature sensor separate on this model?

On most 2013 Wish variants the IAT is integrated into the Denso mass air flow sensor in the airbox duct. That means if the IAT element fails, the usual fix is replacing the MAF assembly. Light contamination can often be addressed with dedicated MAF cleaner—don’t use carb or brake cleaner.

What are common signs of a dodgy temperature sensor?

Cold start dramas, higher fuel use, black exhaust soot, the radiator fans running when the engine’s cold, an erratic temp gauge, weak A/C performance at idle, or the CVT dropping into a safe mode on hot days. A scan of live data is the quickest way to separate a failed sensor from wiring or thermostat issues.