Delphi TS10289 Engine Coolant Temperature Sensor

Engine Coolant Temperature Sensor for Toyota and Lexus

Delphi TS10289 is an engine coolant temperature sensor built for direct replacement in a wide range of Toyota, Lexus, Mazda, Scion, and select Toyota hybrid applications. It uses a 2-terminal blade design with a square female connector and threaded nut mounting for a straightforward OE-style service fit.

Backed by Delphi’s OE heritage and decades of supplier experience, this coolant temperature sensor is built with the application knowledge needed for accurate engine temperature signal transfer. The TS10289 is a fitment-based replacement for vehicles such as the Toyota Camry, Toyota Tacoma, Lexus RX350, and Mazda CX-5.

Key Features

• Delphi part number TS10289
• Engine coolant temperature sensor for OE-style replacement
• 2 blade terminals with 1 square female connector
• Threaded nut mounting for secure installation
• Wiring harness not included
• Package contents: engine coolant temperature sensor and instruction sheet
• Cross-reference: DENSO Auto Parts 193-1000

Detailed Description

Delphi TS10289 is engineered for vehicles that rely on a precise coolant temperature signal for engine management. It is compatible with many Toyota and Lexus platforms, including 2008-2017 Toyota Camry, 2005-2021 Toyota Tundra, 2007-2017 Lexus LS460, and 2017-2023 Mazda CX-5. Additional coverage includes Toyota Prius, RAV4, Highlander, Tacoma, Sequoia, and Lexus RX, IS, GX, and NX applications. For fitment-specific searches, this part number is also used for 2016-2021 Toyota Prius located on the water outlet and 2019-2023 Mazda 3.

Delphi draws on OE supplier experience to build aftermarket parts with the same application knowledge used by major automakers. TS10289 is a practical replacement choice when servicing a faulty coolant temperature sensor on Toyota Corolla, Toyota 4Runner, Lexus GX460, or Mazda CX-30 platforms.

What It Helps Address

• Incorrect coolant temperature readings
• Illuminated engine warning lights related to temperature signal faults
• Hard starting or rough running caused by inaccurate temperature input
• Cooling fan control issues tied to sensor signal errors
• Driveability problems on Toyota, Lexus, Mazda, and Scion vehicles with a failing sensor

Installation Notes and Tips

Verify connector style, terminal count, and mounting type before installation. TS10289 uses a square female connector with two male blade terminals and threaded nut mounting, so the replacement should match the original sensor configuration. Some applications list a specific location note, such as Toyota Prius models located on the water outlet. Always confirm the exact year, make, model, and engine configuration against the vehicle’s service information before replacing the sensor.

Quality Assurance

Delphi builds this sensor using OE heritage and supplier knowledge developed through long-term work with major automakers. The TS10289 is designed as an aftermarket replacement that reflects that application experience and supports dependable service on confirmed fitments.