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Volkswagen Jetta

Fluid parameters

The Volkswagen Jetta has 4 fluid parameters.

● Confirmed◆ In testing○ Supported× Not supported

How to read a parameter card

Automatic transmission fluid temperature JETTA_ATF_TConfirmed

  • Request22 21 04
  • Service 22DID 2104
  • Module7E1 → 7E9
  • Every1 s
  • Testing for 2017 to 2018, 2022 to 2023, 2026

Example reply from a 2025 Volkswagen Jetta.

Bits 0 to 7 of the reply, 8 bits.

0x86 = 134 → (134 − 40) = 94 °C

Formula
(val − 40)
Range
-40 to 215 °C
Unit
°C

Confirmed for 2015 to 2016, 2019 to 2021, 2024 to 2025. In testing for 2017 to 2018, 2022 to 2023, 2026. Not supported for 2009, 2013 to 2014.

  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.

Automatic transmission fluid temperature JETTA_ATF_TConfirmed

  • Request22 21 04
  • Service 22DID 2104
  • Module7E1 → 7E9
  • Every1 s
  • Testing for 2017 to 2018, 2022 to 2023, 2026

Example reply from a 2025 Volkswagen Jetta.

Bits 0 to 7 of the reply, 8 bits.

0x86 = 134 → (134 − 40) = 94 °C

Formula
(val − 40)
Range
-40 to 215 °C
Unit
°C

Confirmed for 2015 to 2016, 2019 to 2021, 2024 to 2025. In testing for 2017 to 2018, 2022 to 2023, 2026. Not supported for 2009, 2013 to 2014.

Oil level JETTA_OIL_LEVELConfirmed

  • Request22 11 BA
  • Service 22DID 11BA
  • Module7E0 → 7E8
  • Every15 s
  • Testing for 1988 to 2015, 2017 to 2018, 2022 to 2023, 2026

Example reply from a 2025 Volkswagen Jetta.

Bits 0 to 15 of the reply, 16 bits.

0x2341 = 9025 → (9025 ÷ 2500) = 3.61 cm

Formula
(val ÷ 2500)
Range
0 to 26.2 cm
Unit
cm

Confirmed for 2016, 2019 to 2021, 2024 to 2025. In testing for 2017 to 2018, 2022 to 2023, 2026. Not supported for 2009, 2013 to 2015.

Oil level warning threshold JETTA_OIL_LEVEL_WARNConfirmed

  • Request22 11 BD
  • Service 22DID 11BD
  • Module7E0 → 7E8
  • Every3600 s
  • Testing for 1988 to 2015, 2017 to 2018, 2022 to 2023, 2026

Example reply from a 2025 Volkswagen Jetta.

Bits 0 to 15 of the reply, 16 bits.

0x0E50 = 3664 → (3664 ÷ 2500) = 1.4656 cm

Formula
(val ÷ 2500)
Range
0 to 26.2 cm
Unit
cm

Confirmed for 2016, 2019 to 2021, 2024 to 2025. In testing for 2017 to 2018, 2022 to 2023, 2026. Not supported for 2009, 2011, 2013 to 2015.

Oil level, critical JETTA_OIL_CRITConfirmed

  • Request22 11 BB
  • Service 22DID 11BB
  • Module7E0 → 7E8
  • Every3600 s
  • Testing for 1988 to 2015, 2017 to 2018, 2022 to 2026

Example reply from a 2021 Volkswagen Jetta.

Bits 0 to 15 of the reply, 16 bits.

0x26B9 = 9913 → (9913 ÷ 2500) = 3.9652 cm

Formula
(val ÷ 2500)
Range
0 to 26.2 cm
Unit
cm

Confirmed for 2016, 2019 to 2021. In testing for 2017 to 2018, 2022 to 2023, 2026. Not supported for 2009, 2013 to 2015, 2024 to 2025.

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