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Audi e-tron

Climate parameters

The Audi e-tron has 6 climate parameters.

● Confirmed◆ In testing○ Supported× Not supported

How to read a parameter card

Outside humidity ETRON_HVAC_OUTSIDE_HUMConfirmed

  • Request22 27 C3
  • Service 22DID 27C3
  • Module746 → 7B0
  • Every1 s
  • Testing for 2019 to 2021, 2023 to 2024

Example reply from a 2026 Audi e-tron.

Bits 56 to 63 of the reply, 8 bits.

0x00 = 0 → (0 ÷ 2) = 0 %

Formula
(val ÷ 2)
Range
0 to 100 %
Unit
%

Confirmed for 2022, 2026. In testing for 2020, 2023 to 2024. Not supported for 2019, 2021.

  1. The parameter's name and its ID in the OBDb. Confirmed shows when a response from a real car confirms the parameter.
  2. The clutch mark shows a Connectable, a parameter that Pelican surfaces in its interface.
  3. The service and PID/DID asked for, the control module it's sent to, and how often Pelican asks.
  4. The reply's bytes. The parameter's bytes are blue. Bytes for other parameters in the same reply are grayed out. Hover over a byte to see the parameter it represents.
  5. Where the parameter is in the response, and how Pelican converts the raw value into a value.
  6. A real reply, decoded. The raw value comes first, then the reading.
  7. Which model years have tested this parameter.

Outside humidity ETRON_HVAC_OUTSIDE_HUMConfirmed

  • Request22 27 C3
  • Service 22DID 27C3
  • Module746 → 7B0
  • Every1 s
  • Testing for 2019 to 2021, 2023 to 2024

Example reply from a 2026 Audi e-tron.

Bits 56 to 63 of the reply, 8 bits.

0x00 = 0 → (0 ÷ 2) = 0 %

Formula
(val ÷ 2)
Range
0 to 100 %
Unit
%

Confirmed for 2022, 2026. In testing for 2020, 2023 to 2024. Not supported for 2019, 2021.

Outside temperature ETRON_PTC_OUTSIDE_TConfirmed

  • Request22 26 09
  • Service 22DID 2609
  • Module742 → 7AC
  • Every1 s
  • Testing for 2020, 2023 to 2024

Example reply from a 2026 Audi e-tron.

Bits 0 to 7 of the reply, 8 bits.

0x80 = 128 → (128 ÷ 2 − 50) = 14 °C

Formula
(val ÷ 2 − 50)
Range
-50 to 77.5 °C
Unit
°C

Confirmed for 2019, 2021 to 2022, 2026. In testing for 2020, 2023 to 2024.

Outside temperature ETRON_TRON_AATConfirmed

  • Request22 26 09
  • Service 22DID 2609
  • Module746 → 7B0
  • Every5 s
  • Testing for 2019 to 2021, 2023 to 2024

Example reply from a 2026 Audi e-tron.

Bits 0 to 15 of the reply, 16 bits. The value is signed.

0x008C = 140 → (140 ÷ 10) = 14 °C

Formula
(val ÷ 10)
Range
-3276.8 to 100 °C
Unit
°C

Confirmed for 2022, 2026. In testing for 2020, 2023 to 2024. Not supported for 2019, 2021.

Climate › Heater

Heater current ETRON_PTC_HTR_IConfirmed

  • Request22 47 5F
  • Service 22DID 475F
  • Module742 → 7AC
  • Every1 s
  • Testing for 2020 to 2021, 2023 to 2024

Example reply from a 2026 Audi e-tron.

Bits 0 to 7 of the reply, 8 bits.

0x00 = 0 → (0 ÷ 4) = 0 A

Formula
(val ÷ 4)
Range
0 to 63.74 A
Unit
A

Confirmed for 2019, 2022, 2026. In testing for 2020, 2023 to 2024. Not supported for 2021.

Heater fluid temperature #1 ETRON_PTC_HTR_FLUID_T1Confirmed

  • Request22 47 5F
  • Service 22DID 475F
  • Module742 → 7AC
  • Every1 s
  • Testing for 2020 to 2021, 2023 to 2024

Example reply from a 2026 Audi e-tron.

Bits 64 to 71 of the reply, 8 bits.

0x4D = 77 → (77 − 50) = 27 °C

Formula
(val − 50)
Range
-50 to 205 °C
Unit
°C

Confirmed for 2019, 2022, 2026. In testing for 2020, 2023 to 2024. Not supported for 2021.

Heater fluid temperature #2 ETRON_PTC_HTR_FLUID_T2Confirmed

  • Request22 47 5F
  • Service 22DID 475F
  • Module742 → 7AC
  • Every1 s
  • Testing for 2020 to 2021, 2023 to 2024

Example reply from a 2026 Audi e-tron.

Bits 72 to 79 of the reply, 8 bits.

0x4D = 77 → (77 − 50) = 27 °C

Formula
(val − 50)
Range
-50 to 205 °C
Unit
°C

Confirmed for 2019, 2022, 2026. In testing for 2020, 2023 to 2024. Not supported for 2021.

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