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Toyota Avalon

Light parameters

The Toyota Avalon has 8 light parameters.

● Confirmed◆ In testing○ Supported× Not supported

How to read a parameter card

Hazard switch history AVALON_HAZARD_SWITCH_HISTORYConfirmed

  • Request21 BC
  • Service 21PID BC
  • Module7B0 → 7B8
  • Every3600 s
  • Testing for 1994 to 2018, 2020, 2022

Example reply from a 2021 Toyota Avalon.

Bit 2 of the reply.

0b0 = 0 → INCOMPLETE

Unit
Named states
States
Raw valueStateMeaning
0INCOMPLETEIncomplete
1COMPLETEComplete

Confirmed for 2019, 2021. In testing for 1994 to 2018, 2020. Not supported for 2022.

  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.

Check engine SW AVALON_CHECK_ENGINE_LIGHT

  • Request21 12
  • Service 21PID 12
  • Module7C0 → 7C8
  • Every1 s
  • Testing

Bit 15 of the reply.

Formula
val
Range
0 to 1
Unit
Off or on

In testing for 1994 to 2018, 2020. Not supported for 2019, 2021 to 2022.

Hazard switch history AVALON_HAZARD_SWITCH_HISTORYConfirmed

  • Request21 BC
  • Service 21PID BC
  • Module7B0 → 7B8
  • Every3600 s
  • Testing for 1994 to 2018, 2020, 2022

Example reply from a 2021 Toyota Avalon.

Bit 2 of the reply.

0b0 = 0 → INCOMPLETE

Unit
Named states
States
Raw valueStateMeaning
0INCOMPLETEIncomplete
1COMPLETEComplete

Confirmed for 2019, 2021. In testing for 1994 to 2018, 2020. Not supported for 2022.

Oil pressure switch AVALON_EOP_LIGHT

  • Request21 12
  • Service 21PID 12
  • Module7C0 → 7C8
  • Every1 s
  • Testing

Bit 35 of the reply.

Formula
val
Range
0 to 1
Unit
Off or on

In testing for 1994 to 2018, 2020. Not supported for 2019, 2021 to 2022.

P-seatbelt buckle SW AVALON_P_SEATBELT_BUCKLE_LIGHT

  • Request21 12
  • Service 21PID 12
  • Module7C0 → 7C8
  • Every1 s
  • Testing

Bit 8 of the reply.

Formula
val
Range
0 to 1
Unit
Off or on

In testing for 1994 to 2018, 2020. Not supported for 2019, 2021 to 2022.

Rheostat AVALON_RHEOSTAT

Higher values are brighter

  • Request21 68
  • Service 21PID 68
  • Module7C0 → 7C8
  • Every1 s
  • Testing

Bits 0 to 7 of the reply, 8 bits.

Formula
val
Range
0 to 255
Unit
Number

In testing for 1994 to 2018, 2020. Not supported for 2019, 2021 to 2022.

Stop light AVALON_STOP_LIGHT_SWConfirmed

  • Request21 1F
  • Service 21PID 1F
  • Module7B0 → 7B8
  • Every1 s
  • Testing for 1994 to 2018, 2020, 2022

Example reply from a 2021 Toyota Avalon.

Bit 0 of the reply.

0b0 = 0 → 0

Formula
val
Range
0 to 1
Unit
Off or on

Confirmed for 2019, 2021. In testing for 1994 to 2018, 2020. Not supported for 2022.

Stop light relay AVALON_STOP_LIGHT_RELAYConfirmed

  • Request21 3C
  • Service 21PID 3C
  • Module7B0 → 7B8
  • Every1 s
  • Testing for 1994 to 2018, 2020, 2022

Example reply from a 2021 Toyota Avalon.

Bit 0 of the reply.

0b0 = 0 → 0

Formula
val
Range
0 to 1
Unit
Off or on

Confirmed for 2019, 2021. In testing for 1994 to 2018, 2020. Not supported for 2022.

Tail cancel SW AVALON_TAIL_CANCEL_LIGHT

  • Request21 12
  • Service 21PID 12
  • Module7C0 → 7C8
  • Every1 s
  • Testing

Bit 2 of the reply.

Formula
val
Range
0 to 1
Unit
Off or on

In testing for 1994 to 2018, 2020. Not supported for 2019, 2021 to 2022.

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