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Audi Q4 e-tron

Control parameters

The Audi Q4 e-tron has 4 control parameters.

● Confirmed◆ In testing○ Supported× Not supported

How to read a parameter card

Absolute pedal position, drive Q4ETRON_APP_DConfirmed

  • Request22 F4 49
  • Service 22DID F449
  • Module746 → 7B0
  • Every1 s
  • Testing for 2022 to 2026

Example reply from a 2021 Audi Q4 e-tron.

Bits 0 to 7 of the reply, 8 bits.

0x00 = 0 → (0 ÷ 2.55) = 0 %

Formula
(val ÷ 2.55)
Range
0 to 100 %
Unit
%

Confirmed for 2021. In testing for 2022 to 2023, 2025 to 2026. Not supported for 2024.

  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.

Absolute pedal position, drive Q4ETRON_APP_DConfirmed

  • Request22 F4 49
  • Service 22DID F449
  • Module746 → 7B0
  • Every1 s
  • Testing for 2022 to 2026

Example reply from a 2021 Audi Q4 e-tron.

Bits 0 to 7 of the reply, 8 bits.

0x00 = 0 → (0 ÷ 2.55) = 0 %

Formula
(val ÷ 2.55)
Range
0 to 100 %
Unit
%

Confirmed for 2021. In testing for 2022 to 2023, 2025 to 2026. Not supported for 2024.

Brake booster pressure Q4ETRON_BRAKE_BOOSTER_PConfirmed

  • Request22 20 05
  • Service 22DID 2005
  • ModuleFC00 → FE0076
  • Every1 s
  • Testing for 2021 to 2023, 2025 to 2026

Bits 0 to 15 of the reply, 16 bits.

Formula
(val ÷ 1000)
Range
0 to 65.535 bar
Unit
bar

Confirmed for 2024. In testing for 2022 to 2023, 2025 to 2026. Not supported for 2021.

Steering wheel angle Q4ETRON_STEER_ANGLEConfirmed

  • Request22 03 46
  • Service 22DID 0346
  • ModuleFC00 → FE0076
  • Every250 ms
  • Testing for 2021 to 2023, 2025 to 2026

Bits 0 to 15 of the reply, 16 bits.

Formula
(val ÷ 10)
Range
0 to 6553.5 °
Unit
°

Confirmed for 2024. In testing for 2022 to 2023, 2025 to 2026. Not supported for 2021.

Control › Pedals

Accelerator pedal position D APP_DSAE J1979Confirmed

  • Request01 49
  • Service 01PID 49
  • Module7E0 → 7E8
  • Every250 ms

Bits 0 to 7 of the reply, 8 bits.

Formula
(val × 100 ÷ 255)
Range
0 to 100 %
Unit
%

Confirmed for 2024 to 2025. Supported for 2021.

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