Parts for your 2008 Daihatsu Bego-Temperature sensors

2008 Daihatsu Bego Temperature Sensors — What They Do and How to Look After Them

Technical references confirm the 2008 Daihatsu Bego (J200, also known as Toyota Rush/Terios with the 3SZ‑VE 1.5L engine) is fitted with multiple temperature sensors. These include an engine coolant temperature (ECT) sensor, an intake air temperature (IAT) sensor, ambient and HVAC-related temperature sensors, and—on automatic models—a transmission fluid temperature sensor. These are documented across factory workshop manuals and parts catalogues for the J200 platform and 3SZ‑VE engine.

• Daihatsu Terios/Bego J200 Workshop Manual (3SZ‑VE Engine): Engine Control System and Cooling sections
• Toyota Rush (J200/J210) Repair Manual: Engine Control, Cooling, and Electrical sections
• Toyota/Daihatsu Electronic Parts Catalogue (3SZ‑VE): listings for ECT “Water Temp Thermistor” and IAT
• SAE J1979/ISO 15031‑6 OBD-II diagnostics: standard temperature-sensor DTCs (e.g., P0115–P0119, P0110–P0114)

On this Bego, temperature sensors are the quiet achievers that make the whole package run sweet as. The ECT tells the ECU how warm the engine is so it can sort cold starts, fuel trims, ignition timing and electric fan operation. The IAT helps dial in air–fuel mix as the air density changes with weather and altitude. Auto models lean on transmission fluid temp for smooth shift strategy, while the HVAC and ambient sensors help the climate control behave properly and keep fogging at bay.

These sensors are solid-state thermistors, so they don’t have a set replacement interval. Instead, they’re checked when there’s a warning light, a dodgy gauge, hard starting, fast fans, rich running or poor economy. Smart servicing on a 2008 Bego includes scanning live data to see that coolant and intake temps look realistic (cold start near ambient