2022-2023 Audi Incorrect Outside Temperature Display TSB

Symptoms

Owners of 2022-2023 Audi vehicles may notice that the outside ambient temperature display is incorrect or does not update as quickly as expected. This can lead to concerns about the accuracy of the temperature sensor.

Technical Background: How Your Audi's Temperature Display Works

Audi vehicles incorporate a specific programming strategy for the outside ambient temperature display to ensure accuracy and prevent misleading readings. The system is designed to smooth out temperature fluctuations and avoid displaying incorrect values caused by external factors like engine heat or road surface temperatures.

Key aspects of this operational logic include:

• Gradual Updates: The displayed temperature will not change faster than 4°F (2°C) per minute, whether the temperature is rising or falling. This prevents rapid, erratic changes.
• Stationary Vehicle Logic: After switching the ignition on, if the vehicle is stationary (speed equals zero and the engine is off), temperature changes will only be shown after 30 seconds. This helps prevent heat soak from the engine bay from influencing the initial reading.
• Rising Temperature Display Conditions: Rising temperature values are only displayed when the vehicle is driving faster than 12 mph (20 km/h) during the first 3 miles (5 km) of a trip.
• Falling Temperature Priority: If the measured ambient temperature is actually falling but is currently above the displayed value, the display will not change. This prioritizes showing a more accurate, lower temperature once conditions allow.
• Stop-and-Go Traffic Logic: When the coolant temperature reaches 104°F (40°C) and the vehicle's speed drops below 12 mph (20 km/h), only falling ambient temperature values are shown. This means that in stop-and-go traffic, it may take some time for the displayed temperature to reflect the actual ambient conditions accurately.

Important Warnings for Owners

It is crucial for owners to understand the operational logic of the outside temperature display. If the conditions described above are observed during these typical driving scenarios, the outside ambient temperature sensor is not at fault and does not need to be replaced. Replacing the sensor in these situations will not resolve the perceived Audi incorrect temperature display.

What Owners Should Do

This Technical Service Bulletin (TSB) is purely informational. It clarifies the normal operating characteristics of the outside temperature display system in 2022-2023 Audi models. If you are concerned about an Audi incorrect temperature display, it is recommended to review the information provided here and discuss it with your Audi service technician. There is no specific repair procedure or part replacement associated with this TSB, as it describes normal system behavior.

TSB Revision History

This bulletin, 90 22 57 2032113/6, has undergone several revisions:

• Revision 6 (April 14, 2022): Revised header to include Model Year 2023.
• Revision 5 (April 29, 2021): Revised header to include Model Year 2022.
• Revision 4 (August 28, 2020): Republished.

This TSB supersedes Technical Service Bulletin Group 90 number 21-00, dated April 29, 2021.