2021 Audi Lineup Outside Air Temperature Display TSB
Audi Technical Service Bulletin 90 20 44 addresses customer concerns about incorrect outside air temperature readings in 2021 Audi models. This TSB clarifies that the display behavior, including delayed updates and specific reading patterns, is part of the vehicle's normal operating strategy, not…
David Chen2021 Audi e-tron
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Audi has released Technical Service Bulletin (TSB) 90 20 44, also identified as 2032113/3, to address customer concerns regarding the outside air temperature display in various 2021 Audi models. This bulletin clarifies that what might appear to be an incorrect outside ambient temperature display is actually the result of the vehicle's designed programming strategy.
The TSB aims to inform vehicle owners and technicians that the temperature sensor is generally not at fault under these specific conditions. Instead, the display behavior is an intentional feature to provide a smoother and more accurate long-term temperature reading.
Symptoms
Owners of affected 2021 Audi vehicles may notice that the outside ambient temperature display appears to be incorrect or slow to update. Specifically, you might observe:
- The temperature display does not change immediately after the ignition is switched on, especially when the vehicle is stationary.
- Rising temperature values are only displayed after driving above 12 mph (20 km/h) for the first 3 miles (5 km).
- If the actual outside temperature is falling but is still above the displayed value, the display may not update.
- When the coolant temperature reaches 104° F (40° C) and vehicle speed drops below 12 mph (20 km/h), only falling temperature values are shown. This can cause delays in the display updating to the correct temperature in stop-and-go traffic.
These behaviors can lead to the perception of an incorrect outside ambient temperature display.
Fault codes / DTCs
This Technical Service Bulletin does not mention any specific diagnostic trouble codes (DTCs) associated with this condition. The bulletin explicitly states that if the observed conditions align with the typical driving scenarios described, the temperature sensor itself is not at fault and does not need to be replaced. Therefore, no fault codes are expected for this particular issue.
What the service bulletin says
Audi TSB 90 20 44 (2032113/3) explains the technical background behind the outside temperature display's operation. It details a
Frequently Asked Questions
- Why does my 2021 Audi e-tron outside temperature display seem incorrect?
- Your 2021 Audi e-tron's outside temperature display might seem incorrect due to a built-in programming strategy designed to smooth readings and prevent inaccurate updates from heat sources like the engine or road surface. This is normal operation, as detailed in Audi TSB 90 20 44.
- Is an incorrect outside ambient temperature display a sign of a faulty sensor in my Audi?
- According to Audi Technical Service Bulletin 90 20 44, an incorrect outside ambient temperature display is typically not a sign of a faulty sensor. The bulletin clarifies that the display's behavior, such as delayed updates, is part of the vehicle's normal operating strategy.
- What is Audi TSB 90 20 44 about?
- Audi TSB 90 20 44, also known as 2032113/3, is an informational bulletin that explains why the outside air temperature display in certain 2021 Audi models might appear incorrect. It details the vehicle's programming strategy for temperature display, confirming that observed delays and specific reading patterns are normal and not indicative of a sensor fault.
- Does my Audi's outside temperature display update immediately?
- No, your Audi's outside temperature display does not update instantaneously. The display is designed to change no faster than 4° F (2° C) per minute. Additionally, there are specific conditions, such as vehicle speed and coolant temperature, that can further delay or influence when the display updates.
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