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Lexus IS

Light parameters

The Lexus IS has 9 light parameters.

● Confirmed◆ In testing○ Supported× Not supported

How to read a parameter card

Check engine switch IS_CHECK_ENGINE_LIGHTConfirmed

  • Request21 12
  • Service 21PID 12
  • Module7C0 → 7C8
  • Every2 s
  • Testing for 1998 to 2022, 2024, 2026

Example reply from a 2025 Lexus IS.

Bit 15 of the reply.

0b0 = 0 → 0

Formula
val
Range
0 to 1
Unit
Off or on

Confirmed for 2023, 2025. In testing for 1998 to 2022, 2024, 2026.

  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 switch IS_CHECK_ENGINE_LIGHTConfirmed

  • Request21 12
  • Service 21PID 12
  • Module7C0 → 7C8
  • Every2 s
  • Testing for 1998 to 2022, 2024, 2026

Example reply from a 2025 Lexus IS.

Bit 15 of the reply.

0b0 = 0 → 0

Formula
val
Range
0 to 1
Unit
Off or on

Confirmed for 2023, 2025. In testing for 1998 to 2022, 2024, 2026.

Hazard switch history IS_HAZARD_SWITCH_HISTORY

  • Request21 BC
  • Service 21PID BC
  • Module7B0
  • Every30 s
  • Testing

Bit 2 of the reply.

Unit
Named states
States
Raw valueStateMeaning
0INCOMPLETEIncomplete
1COMPLETEComplete

In testing for 1998 to 2024, 2026. Not supported for 2025.

Oil pressure switch IS_EOP_LIGHTConfirmed

  • Request21 12
  • Service 21PID 12
  • Module7C0 → 7C8
  • Every2 s
  • Testing for 1998 to 2022, 2024, 2026

Example reply from a 2025 Lexus IS.

Bit 35 of the reply.

0b0 = 0 → 0

Formula
val
Range
0 to 1
Unit
Off or on

Confirmed for 2023, 2025. In testing for 1998 to 2022, 2024, 2026.

P-seatbelt buckle switch IS_P_SEATBELT_BUCKLE_LIGHTConfirmed

  • Request21 12
  • Service 21PID 12
  • Module7C0 → 7C8
  • Every2 s
  • Testing for 1998 to 2022, 2024, 2026

Example reply from a 2025 Lexus IS.

Bit 8 of the reply.

0b0 = 0 → 0

Formula
val
Range
0 to 1
Unit
Off or on

Confirmed for 2023, 2025. In testing for 1998 to 2022, 2024, 2026.

Rheostat IS_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 1998 to 2024, 2026. Not supported for 2025.

Stop light IS_STOP_LIGHT_SW

  • Request21 1F
  • Service 21PID 1F
  • Module7B0 → 7B8
  • Every2 s
  • Testing

Bit 0 of the reply.

Formula
val
Range
0 to 1
Unit
Off or on

In testing for 1998 to 2022, 2024, 2026. Not supported for 2023, 2025.

Stop light IS_STOP_LIGHT_SWITCHConfirmed

  • Request21 25
  • Service 21PID 25
  • Module7E0 → 7E8
  • Every1 s
  • Testing for 1998 to 2022, 2024, 2026

Example reply from a 2025 Lexus IS.

Bit 5 of the reply.

0b0 = 0 → 0

Formula
val
Range
0 to 1
Unit
Number

Confirmed for 2023, 2025. In testing for 1998 to 2022, 2024, 2026.

Stop light relay IS_STOP_LIGHT_RELAY

  • Request21 3C
  • Service 21PID 3C
  • Module7B0 → 7B8
  • Every1 s
  • Testing

Bit 0 of the reply.

Formula
val
Range
0 to 1
Unit
Off or on

In testing for 1998 to 2022, 2024, 2026. Not supported for 2023, 2025.

Tail cancel switch IS_TAIL_CANCEL_LIGHTConfirmed

  • Request21 12
  • Service 21PID 12
  • Module7C0 → 7C8
  • Every2 s
  • Testing for 1998 to 2022, 2024, 2026

Example reply from a 2025 Lexus IS.

Bit 2 of the reply.

0b0 = 0 → 0

Formula
val
Range
0 to 1
Unit
Off or on

Confirmed for 2023, 2025. In testing for 1998 to 2022, 2024, 2026.

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