Climate parameters
The Toyota Grand Highlander has 20 climate parameters.
● Confirmed◆ In testing○ Supported× Not supported
Adjusted ambient temperature GH_ADJUSTED_AMBIENT_T
- Request
21 3D - Service 21
PID 3D - Module
7C4 → 7CC - Every
5 s - Testing
Bits 0 to 7 of the reply, 8 bits.
- Formula
(val × 81.6 ÷ 255 − 30.8)- Range
- -30.8 to 50.8 °C
- Unit
- °C
In testing for 2023. Not supported for 2024 to 2026.
Air inlet damper actual pulse GH_AIR_INLET_DAMPER_ACTUAL_PULSE
- Request
21 44 - Service 21
PID 44 - Module
7C4 → 7CC - Every
1 s - Testing
Bits 8 to 15 of the reply, 8 bits.
- Formula
val- Range
- 0 to 255
- Unit
- Number
In testing for 2023. Not supported for 2024 to 2026.
Air inlet damper target pulse GH_AIR_INLET_DAMPER_TARGET_PULSE
- Request
21 44 - Service 21
PID 44 - Module
7C4 → 7CC - Every
1 s - Testing
Bits 0 to 7 of the reply, 8 bits.
- Formula
val- Range
- 0 to 255
- Unit
- Number
In testing for 2023. Not supported for 2024 to 2026.
Air outlet servo actual pulse, driver GH_AIR_OUTLET_SERVO_ACTU_PULSE_D
- Request
21 43 - Service 21
PID 43 - Module
7C4 → 7CC - Every
1 s - Testing
Bits 8 to 15 of the reply, 8 bits.
- Formula
val- Range
- 0 to 255
- Unit
- Number
In testing for 2023. Not supported for 2024 to 2026.
Air outlet servo pulse, driver GH_AIR_OUTLET_SERVO_PULSE_D
- Request
21 43 - Service 21
PID 43 - Module
7C4 → 7CC - Every
1 s - Testing
Bits 0 to 7 of the reply, 8 bits.
- Formula
val- Range
- 0 to 255
- Unit
- Number
In testing for 2023. Not supported for 2024 to 2026.
Ambient air temperature GH_AAT_7C4
- Request
21 22 - Service 21
PID 22 - Module
7C4 → 7CC - Every
5 s - Testing
Bits 0 to 7 of the reply, 8 bits.
- Formula
(val × 89.25 ÷ 255 − 23.3)- Range
- -23.3 to 65.95 °C
- Unit
- °C
In testing for 2023. Not supported for 2024 to 2026.
Ambient temperature GH_AMBIENT_TConfirmed
- Request
22 1F 46 - Service 22
DID 1F46 - Module
700 → 708 - Every
5 s - Testing for 2023
Example reply from a 2026 Toyota Grand Highlander.
Bits 0 to 7 of the reply, 8 bits.
0x2A = 42 → (42 − 40) = 2 °C
- Formula
(val − 40)- Range
- -40 to 215 °C
- Unit
- °C
Confirmed for 2024 to 2026. In testing for 2023.
Ambient temperature, climate GH_AAT_7C4_V2Confirmed
- Request
22 10 02 - Service 22
DID 1002 - Module
7C4 → 7CC - Every
10 s - Testing for 2023, 2025 to 2026
Example reply from a 2024 Toyota Grand Highlander.
Bits 0 to 15 of the reply, 16 bits. The value is signed.
0x09D3 = 2515 → (2515 ÷ 100) = 25.15 °C
- Formula
(val ÷ 100)- Range
- -327.68 to 327.67 °C
- Unit
- °C
Confirmed for 2024. In testing for 2023, 2025 to 2026.
Blower level GH_BLOWERConfirmed
- Request
22 28 01 - Service 22
DID 2801 - Module
7C4 → 7CC - Every
10 s - Testing for 2023, 2025 to 2026
Example reply from a 2024 Toyota Grand Highlander.
Bits 0 to 7 of the reply, 8 bits.
0x02 = 2 → 2
- Formula
val- Range
- 0 to 7
- Unit
- Number
Confirmed for 2024. In testing for 2023, 2025 to 2026.
Blower motor speed level GH_BLOWER_MOTOR_SPEED_LEVEL
- Request
21 3C - Service 21
PID 3C - Module
7C4 → 7CC - Every
5 s - Testing
Bits 0 to 7 of the reply, 8 bits.
- Formula
val- Range
- 0 to 255
- Unit
- Number
In testing for 2023. Not supported for 2024 to 2026.
Cabin temperature GH_CABIN_T
- Request
21 21 - Service 21
PID 21 - Module
7C4 → 7CC - Every
5 s - Testing
Bits 0 to 7 of the reply, 8 bits.
- Formula
(val × 63.75 ÷ 255 − 6.5)- Range
- -6.5 to 57.25 °C
- Unit
- °C
In testing for 2023. Not supported for 2024 to 2026.
Cabin temperature GH_CABIN_T_V2Confirmed
- Request
22 10 01 - Service 22
DID 1001 - Module
7C4 → 7CC - Every
10 s - Testing for 2023, 2025 to 2026
Example reply from a 2024 Toyota Grand Highlander.
Bits 0 to 15 of the reply, 16 bits. The value is signed.
0x0AB8 = 2744 → (2744 ÷ 100) = 27.44 °C
- Formula
(val ÷ 100)- Range
- -327.68 to 327.67 °C
- Unit
- °C
Confirmed for 2024. In testing for 2023, 2025 to 2026.
Climate set point code GH_HVAC_SET_RAWConfirmed
- Request
22 10 36 - Service 22
DID 1036 - Module
7C4 → 7CC - Every
10 s - Testing for 2023, 2025 to 2026
Example reply from a 2024 Toyota Grand Highlander.
Bits 0 to 7 of the reply, 8 bits.
0x2A = 42 → 42
- Formula
val- Range
- 0 to 255
- Unit
- Number
Confirmed for 2024. In testing for 2023, 2025 to 2026.
Communication with air conditioner GH_COMM_WITH_AIR_CONDITIONER
- Request
21 24 - Service 21
PID 24 - Module
7E0 → 7E8 - Every
5 s - Testing
Bit 5 of the reply.
- Formula
val- Range
- 0 to 1
- Unit
- Off or on
In testing for 2023. Not supported for 2024 to 2026.
Communication with HV GH_COMMUNICATION_WITH_HV
- Request
21 24 - Service 21
PID 24 - Module
7E0 → 7E8 - Every
5 s - Testing
Bit 2 of the reply.
- Formula
val- Range
- 0 to 1
- Unit
- Off or on
In testing for 2023. Not supported for 2024 to 2026.
Communication with valvematic GH_COMM_WITH_VALVEMATIC_COMM
- Request
21 24 - Service 21
PID 24 - Module
7E0 → 7E8 - Every
5 s - Testing
Bit 6 of the reply.
- Formula
val- Range
- 0 to 1
- Unit
- Number
In testing for 2023. Not supported for 2024 to 2026.
Evaporator fin thermistor GH_EVAP_FIN_THERMISTOR
- Request
21 4B - Service 21
PID 4B - Module
7C4 → 7CC - Every
5 s - Testing
Bits 0 to 7 of the reply, 8 bits.
- Formula
(val × 89.25 ÷ 255 − 29.7)- Range
- -29.7 to 59.55 °C
- Unit
- °C
In testing for 2023. Not supported for 2024 to 2026.
Evaporator target temperature GH_EVAP_TARGET_T
- Request
21 4C - Service 21
PID 4C - Module
7C4 → 7CC - Every
1 s - Testing
Bits 0 to 15 of the reply, 16 bits.
- Formula
(val ÷ 100 − 327.68)- Range
- -327.68 to 327.67
- Unit
- Number
In testing for 2023. Not supported for 2024 to 2026.
Set temperature, driver side GH_T_DRIVER
- Request
21 29 - Service 21
PID 29 - Module
7C4 → 7CC - Every
5 s - Testing
Bits 0 to 7 of the reply, 8 bits.
- Formula
val- Range
- 0 to 255 °C
- Unit
- °C
In testing for 2023. Not supported for 2024 to 2026.
Solar sensor, driver side GH_SOLAR_DRIVER
- Request
21 24 - Service 21
PID 24 - Module
7C4 → 7CC - Every
1 s - Testing
Bits 0 to 7 of the reply, 8 bits.
- Formula
val- Range
- 0 to 255
- Unit
- Number
In testing for 2023. Not supported for 2024 to 2026.
