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Standard Ignition AX399 Cabin Air Temperature Sensor
| Brand | Standard Ignition AX399 |
|---|---|
| Color | Black |
| Connector Gender | Female |
| Connector Shape | Rectangular |
| Connector Type | Plug In |
| Contents | Sensor |
| Mounting Bracket(s) Included | No |
| Terminal Gender | Male |
| Terminal Type | Blade |
| Wiring Harness Included | No |
| Fits | Jaguar · 6 vehicles |
Plug-in sensor. Direct cabin air temperature sensing in a compact, rectangular design.
Black finish. Clean, discreet appearance for a factory-style look.
Blade terminals. Four-terminal electrical connection with a female plug-in connector.
Cross-references Standard Ignition AX399, ATSA265 and TS57526 for the same application. See all 5.
Cabin Air Temperature Sensor for Jaguar S-Type
Standard Ignition AX399 is a cabin air temperature sensor for HVAC systems that monitor interior temperature in the vehicle cabin. It fits 2003-2008 Jaguar S-Type applications and uses a black, plug-in rectangular connector for direct electrical connection.
Key Features
- Cabin air temperature sensor for HVAC temperature monitoring
- Fits 2003-2008 Jaguar S-Type
- Black finish with a rectangular female connector
- Plug-in connector type with 4 male blade terminals
- Sensor only; wiring harness and mounting bracket are not included
- Standard Ignition AX399 replacement part
Detailed Description
The Standard Ignition AX399 cabin air temperature sensor is used in HVAC control systems to read interior air temperature and send that information to the climate control module. On 2003-2008 Jaguar S-Type models, accurate cabin temperature input is important for consistent heating and air conditioning operation. This part cross-references Monroe Shocks & Struts (e.g., ATSA265, TS57526) for the same application. Standard Ignition AX399 is a direct-fit replacement option for Jaguar S-Type cabin temperature sensor service.
Common Issues This Part May Address
- Incorrect cabin temperature readings on the climate control display
- HVAC output that does not match the selected temperature setting
- Intermittent heating or cooling response from the climate system
- Fault codes related to cabin temperature sensor input
- Uneven or unstable interior temperature regulation
Installation Notes and Tips
Verify connector shape, terminal style, and mounting location before installation. The AX399 uses a female rectangular plug-in connector with 4 male blade terminals, so the vehicle harness should match these specifications. Inspect the HVAC sensor area for contamination, damaged terminals, or loose connections before installing the replacement sensor. Confirm fitment for your specific Jaguar S-Type year before service.
Quality Assurance
Standard Ignition supplies replacement electrical and HVAC components for service applications, and AX399 is built to match the listed connector and terminal configuration for the confirmed vehicle fitment.
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2008 | Jaguar | S-Type | N/A | — |
| 2007 | Jaguar | S-Type | N/A | — |
| 2006 | Jaguar | S-Type | N/A | — |
| 2005 | Jaguar | S-Type | N/A | — |
| 2004 | Jaguar | S-Type | N/A | — |
| 2003 | Jaguar | S-Type | N/A | — |
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