Walker 211-2012 Engine Coolant Temperature Sensor

Engine Coolant Temperature Sensor for Toyota and Lexus

Walker 211-2012 is a sensor-only engine coolant temperature sensor built to report cooling system temperature to the ECM in real time. It supports accurate fuel delivery, ignition timing, cold start enrichment, and cooling fan operation on select Toyota and Lexus applications.

Walker Sensor Only parts are built to OE-style resistance values, thermal response, and signal output for direct integration with factory engine management systems. The 211-2012 uses a pin terminal design with an oblong female connector and no wiring harness included.

Key Features

• Engine coolant temperature sensor for ECM temperature input
• OE-matched resistance values and thermal response
• Direct-fit replacement with no modifications required
• Pin terminal type with 2 terminals
• Oblong female connector shape
• Sensor only; wiring harness not included
• Built with heat-resistant materials for coolant and vibration exposure

Detailed Description

Walker 211-2012 is designed for vehicles that rely on precise coolant temperature data to manage engine operation. On applications such as Toyota Camry, Tacoma, Highlander, Sienna, Prius, and Lexus RX350, this sensor helps the ECM read coolant temperature accurately so the system can adjust fueling, ignition timing, and radiator fan control. The Sensor Only line focuses on direct replacement fitment and factory-style signal behavior, making it a practical choice for service work on Toyota and Lexus cooling systems.

This part cross-references Standard Ignition TX273 for the same application.

What It Helps Address

• Check engine light related to coolant temperature sensor performance
• Hard cold starts or extended warm-up behavior
• Incorrect fuel mixture caused by inaccurate temperature input
• Cooling fan operation that does not match engine temperature
• Poor drivability from faulty ECM temperature readings

Installation Notes and Tips

Verify connector shape, terminal count, and sensor location before installation. This part uses a 2-pin female oblong connector and does not include a wiring harness. Confirm the vehicle application against the listed fitment for 2016-2025 Toyota and Lexus models, including 2019-2025 Lexus ES350, 2018-2024 Lexus LS500h, 2018-2023 Toyota Camry, and 2016-2023 Toyota Tacoma.

For best results, inspect the cooling system connector and surrounding harness for corrosion, coolant contamination, or damaged terminals before installing the new sensor.

Quality Assurance

Walker Products engineers these coolant temperature sensors to match OE specifications for resistance, thermal response, and signal output. The durable, heat-resistant construction is selected for continuous exposure to coolant, vibration, and temperature swings found in everyday engine operation. Part number 211-2012 is built for direct replacement service on select Toyota and Lexus vehicles.