HomeBelts and Cooling > SensorsStandard Ignition TX209 Engine Coolant Temperature Sensor
Part #: TX209

Standard Ignition TX209 Engine Coolant Temperature Sensor

⚙️ 31 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Mercedes-Benz, SL600, CL600, S420, S500, S600, E300, E420, SL500, C220, C280, C36 AMG, S320, and SL320
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Reliable Engine Coolant Temperature Sensor for Mercedes-Benz Models

The Standard Ignition TX209 Engine Coolant Temperature Sensor is designed to provide accurate temperature readings for your Mercedes-Benz vehicle. Engineered for models including the C36 AMG, C220, C280, CL600, E300, E420, S320, S420, S500, S600, SL320, SL500, and SL600, this sensor ensures optimal engine performance and temperature regulation.

  • Bolt-on attachment method for secure installation
  • Female connector with a single square-shaped plug-in design
  • Durable metal and plastic finish for long-lasting use
  • One port and four male blade terminals for reliable connectivity
  • Compatible with multiple Mercedes-Benz models for precise fitment

Detailed Product Features and Specifications

The TX209 Engine Coolant Temperature Sensor from Standard Ignition features a bolt-on attachment method, allowing for straightforward and secure mounting in your vehicle’s engine bay. It includes a female connector with one square-shaped plug-in type, ensuring a proper electrical connection. The sensor is constructed with a combination of metal and plastic materials, providing durability and resistance to engine heat and environmental factors. It has one port and four male blade terminals, designed to maintain consistent signal transmission to the engine control unit (ECU).

Compatible Mercedes-Benz Models and Applications

This sensor is compatible with a range of Mercedes-Benz vehicles, including the C36 AMG, C220, C280, CL600, E300, E420, S320, S420, S500, S600, SL320, SL500, and SL600. It is specifically designed to replace the original equipment sensor, ensuring accurate coolant temperature readings that are critical for engine management and performance.

Common Issues Addressed by the TX209 Sensor

  • Inaccurate engine temperature readings causing poor fuel efficiency
  • Engine overheating due to faulty temperature monitoring
  • Check engine light triggered by sensor failure
  • Erratic engine performance related to temperature sensor faults
  • Cooling fan malfunction due to incorrect temperature data

Installation Notes and Tips

Installation of the Standard Ignition TX209 sensor requires a bolt-on approach, making it accessible for professional mechanics and experienced DIYers. Ensure the engine is cool before removal to avoid burns. Disconnect the battery before installation to prevent electrical shorts. Verify the connector type matches the vehicle’s wiring harness—this sensor uses a female, square-shaped plug-in connector with four male blade terminals. Tighten the sensor securely but avoid over-torquing to prevent damage.

Quality Assurance and Warranty Information

Standard Ignition parts are manufactured to meet or exceed OEM specifications, providing reliable performance and durability. The TX209 Engine Coolant Temperature Sensor undergoes rigorous quality control testing to ensure consistent operation. Please refer to Standard Ignition’s warranty policy for specific coverage details.

BrandStandard Ignition
Part NumberTX209
Attachment MethodBolt On
Connector GenderFemale
Connector ShapeSquare
Connector TypePlug In
Terminal GenderMale
Terminal TypeBlade

This part fits 31 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2002Mercedes-BenzSL600N/A
2001Mercedes-BenzSL600N/A
2000Mercedes-BenzSL600N/A
1999Mercedes-BenzCL600N/A
1999Mercedes-BenzS420N/A4 Blade Term.
1999Mercedes-BenzS5005.0LV8N/A
1999Mercedes-BenzS600N/A
1999Mercedes-BenzSL600N/A
1998Mercedes-BenzCL600N/A
1998Mercedes-BenzS420N/A4 Blade Term.
1998Mercedes-BenzS500N/A
1998Mercedes-BenzS600N/A
1998Mercedes-BenzSL600N/A
1997Mercedes-BenzE300N/A
1997Mercedes-BenzE4204.2LV8N/A
1997Mercedes-BenzS420N/A4 Blade Term.
1997Mercedes-BenzS500N/A
1997Mercedes-BenzS600N/A
1997Mercedes-BenzSL500N/A
1997Mercedes-BenzSL600N/A
1996Mercedes-BenzC220N/A
1996Mercedes-BenzC280N/A
1996Mercedes-BenzC36 AMGN/A
1996Mercedes-BenzE300N/A
1996Mercedes-BenzS320N/A
1996Mercedes-BenzS420N/A4 Blade Term.
1996Mercedes-BenzS500N/A
1996Mercedes-BenzS600N/A
1996Mercedes-BenzSL320N/A
1996Mercedes-BenzSL500N/A
1996Mercedes-BenzSL600N/A

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

01154251173790640985S1242271-282673903CT0080CTSA120TS5819V30-72-0156WT5219WTC1444

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.