Standard Ignition AX377 Ambient Air Temperature Sensor

Ambient Air Temperature Sensor for Audi and Volkswagen

Standard Ignition AX377 is an ambient air temperature sensor built for direct replacement in select Audi and Volkswagen applications. It uses a black oval plug-in connector with a female connector body, male blade terminals, and a push-on attachment method for a straightforward OE-style fit.

Key Features

• Ambient air temperature sensor for HVAC-related temperature input
• Black finish with oval connector shape
• Female connector, plug-in type, with 2 male blade terminals
• Push-on attachment method
• Sensor only; mounting bracket(s) not included
• Standard Ignition AX377 cross-references Dorman - HELP 76018 and VEMO V10-72-1506 for the same application

Detailed Description

Standard Ignition AX377 is an ambient air temperature sensor used in HVAC systems to report outside air temperature data to the vehicle. Accurate ambient temperature input is important for climate control logic, temperature display accuracy, and related system operation. This part number is listed for a wide range of Audi A3 Quattro, A4, A4 Quattro, A5, A5 Quattro, A8 Quattro, Q3, Q3 Quattro, Q5, Q7, S3, S4, S5, S8, SQ5, and Volkswagen Jetta applications across model years 2013 through 2023. If you are replacing a failed sensor on an Audi A4 Quattro or Volkswagen Jetta, AX377 provides a direct-fit service part reference for those vehicles.

What It Helps Resolve

• Incorrect outside temperature display
• HVAC temperature readings that do not match ambient conditions
• Climate control behavior affected by faulty ambient air input
• Sensor damage from age, road debris, or exposure
• Intermittent temperature signal issues at the connector

Installation Notes and Tips

Verify connector style, terminal layout, and mounting style before installation. AX377 uses a plug-in female connector with an oval shape and push-on attachment, so matching the OE connector is important for proper fitment. Confirm vehicle application by year, make, and model before ordering, especially on Audi A3 Quattro, Audi Q5, and Volkswagen Jetta platforms. Standard Ignition AX377 should be installed in the original sensor location and connected securely to the vehicle harness.

Quality Assurance

Standard Ignition is a recognized aftermarket brand for electrical and sensor components, and AX377 is cataloged as a direct replacement ambient air temperature sensor for the listed applications.