HomeStandard Ignition AX312 Cabin Air Temperature Sensor
Part #: AX312

Standard Ignition AX312 Cabin Air Temperature Sensor

12 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Audi, A8 Quattro and A8
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Overview of Standard Ignition AX312 Cabin Air Temperature Sensor

The Standard Ignition AX312 Cabin Air Temperature Sensor is designed specifically for Audi A8 and A8 Quattro models. This sensor plays a critical role in monitoring the interior climate by accurately measuring cabin air temperature, ensuring optimal HVAC system performance.

  • Compatible with Audi A8 and A8 Quattro vehicles
  • Color/Finish: Gray and black for durability and fit
  • Single female rectangular plug-in connector
  • Two male blade terminals for secure electrical connection
  • Does not include mounting brackets or wiring harness

Detailed Product Description

The AX312 sensor from Standard Ignition is engineered to provide precise cabin air temperature readings to your vehicle’s HVAC system. Featuring a gray and black finish, this sensor is built to integrate seamlessly with the existing components in Audi A8 and A8 Quattro models. It includes one female rectangular plug-in connector, which simplifies installation and ensures a reliable connection. The sensor has two male blade terminals, designed for compatibility with the vehicle’s wiring harness, although the harness itself is not included. This part does not come with mounting brackets, so it is intended to be installed using the original hardware in your vehicle.

Common Applications and Issues Addressed

  • Helps maintain accurate cabin temperature control for comfort
  • Prevents HVAC system malfunctions related to temperature sensing
  • Resolves issues with inconsistent or incorrect temperature readings inside the cabin
  • Supports proper operation of automatic climate control systems
  • Addresses sensor-related error codes in the vehicle’s diagnostic system

Installation Notes and Tips

  • Compatible with factory wiring harness; no additional harness included
  • Ensure the connector is fully seated to avoid intermittent sensor signals
  • Use original mounting points as no brackets are provided
  • Disconnect the battery before installation to prevent electrical shorts
  • Verify sensor function with diagnostic tools after installation

Quality Assurance and Warranty

Standard Ignition parts are manufactured to meet or exceed OEM specifications for fit, form, and function. The AX312 Cabin Air Temperature Sensor undergoes rigorous quality control to ensure reliable performance in Audi A8 and A8 Quattro vehicles. Warranty coverage details should be confirmed at the point of purchase, as they may vary by distributor.

BrandStandard Ignition
Part NumberAX312
ColorGray, Black
Connector GenderFemale
Connector ShapeRectangular
Connector TypePlug In
ContentsSensor
Mounting Bracket(s) IncludedNo
Terminal GenderMale
Terminal TypeBlade
Wiring Harness IncludedNo

This part fits 12 vehicles. Search below:

YearMakeModelPositionNotes
2002AudiA8 QuattroN/A
2002AudiA8 QuattroN/AInside Air Temperature; Inlet
2001AudiA8 QuattroN/A
2001AudiA8 QuattroN/AInside Air Temperature; Inlet
2000AudiA8 QuattroN/A
2000AudiA8 QuattroN/AInside Air Temperature; Inlet
1999AudiA8N/Aw/o Navigation
1999AudiA8 QuattroN/Aw/o Navigation
1998AudiA8N/Aw/o Navigation
1998AudiA8 QuattroN/Aw/o Navigation
1997AudiA8N/Aw/o Navigation
1997AudiA8 QuattroN/Aw/o Navigation

* 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:

4D0820541TS57439WT5748

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