Standard Ignition AX418 HVAC Heater Core Temperature Sensor

HVAC Heater Core Temperature Sensor for Mercedes-Benz

Standard Ignition AX418 is an HVAC heater core temperature sensor built for Mercedes-Benz climate control systems that rely on accurate temperature feedback. It uses a female rectangular plug-in connector with two male pin terminals for a direct electrical connection in the HVAC circuit.

Key Features

• HVAC heater core temperature sensor for temperature monitoring in the heater core circuit
• Female rectangular connector with plug-in design
• 2-pin male terminal layout for secure signal transfer
• Direct-fit replacement for select Mercedes-Benz applications
• Standard Ignition AX418 cross-references OE-style part numbers for the same application

Detailed Description

This Standard Ignition AX418 sensor is used in Mercedes-Benz HVAC systems to provide temperature input for heater core control. Accurate sensor feedback helps the climate control module manage cabin heat output and maintain consistent system operation. It is a fitment-based replacement for vehicles including the Mercedes-Benz CLA250, GLA250, E-Class, G-Class, CLS, S-Class, Metris, and related models listed below.

Fits 2014-2019 Mercedes-Benz CLA250, N/A. Fits 2014-2019 Mercedes-Benz CLA45 AMG, N/A. Fits 2015-2019 Mercedes-Benz GLA250, N/A. Fits 2015-2019 Mercedes-Benz GLA45 AMG, N/A. Fits 2016-2019 Mercedes-Benz Metris, N/A. Fits 2017-2019 Mercedes-Benz S63 AMG, N/A. Fits 2017-2019 Mercedes-Benz S65 AMG, N/A. Fits 2015-2018 Mercedes-Benz CLS400, N/A. Fits 2017-2018 Mercedes-Benz CLS550, N/A. Fits 2014-2018 Mercedes-Benz CLS63 AMG S, N/A. Fits 2009-2018 Mercedes-Benz G550, N/A. Fits 2013-2018 Mercedes-Benz G63 AMG, N/A. Fits 2016-2017 Mercedes-Benz B250e, N/A. Fits 2015-2017 Mercedes-Benz E400, N/A. Fits 2007-2017 Mercedes-Benz E550, N/A. Fits 2017 Mercedes-Benz GLC300, N/A. Fits 2017 Mercedes-Benz GLC43 AMG, N/A. Fits 2017 Mercedes-Benz S550, N/A. Fits 2017 Mercedes-Benz S550e, N/A. Fits 2017 Mercedes-Benz S600, N/A.

This part cross-references OE-style numbers 2208300372 and TS57545 for the same application.

What It Helps Address

• Inaccurate heater core temperature readings
• Unstable cabin heat output
• HVAC control faults tied to sensor signal loss
• Temperature-related comfort complaints in Mercedes-Benz climate systems
• Diagnostic trouble codes related to HVAC temperature sensing

Installation Notes and Tips

Verify the connector shape, terminal count, and vehicle application before installation. Inspect the HVAC connector and wiring for corrosion, bent pins, or heat damage, and confirm the sensor seats fully in the original mounting location. After installation, clear any stored HVAC fault codes and confirm proper heater operation.

Quality Assurance

Standard Ignition replacement parts are built for service applications that require dependable electrical fit and function. AX418 is specified for the Mercedes-Benz applications listed above and matches the connector and terminal configuration needed for proper integration with the HVAC system.