Climate parameters
The Toyota Tundra has 21 climate parameters.
● Confirmed◆ In testing○ Supported× Not supported
Adjusted ambient temperature TUNDRA_ADJUSTED_AMBIENT_TConfirmed
- Request
21 3D - Service 21
PID 3D - Module
7C4 → 7CC - Every
5 s - Testing for 1999 to 2006, 2009, 2012 to 2013, 2016, 2022 to 2026
Example reply from a 2021 Toyota Tundra.
Bits 0 to 7 of the reply, 8 bits.
0x49 = 73 → (73 × 81.6 ÷ 255 − 30.8) = -7.44 °C
- Formula
(val × 81.6 ÷ 255 − 30.8)- Range
- -30.8 to 50.8 °C
- Unit
- °C
Confirmed for 2007 to 2008, 2010 to 2011, 2014 to 2015, 2017 to 2021. In testing for 1999, 2001 to 2004, 2009, 2012 to 2013, 2016, 2022, 2026. Not supported for 2000, 2005 to 2006, 2023 to 2025.
Air inlet damper actual pulse TUNDRA_AIR_INLET_DAMPER_ACTUAL_PULSE
- Request
21 44 - Service 21
PID 44 - Module
7C4 → 7CC - Every
1 s - Testing for 1999 to 2006, 2009, 2012 to 2013, 2016, 2022 to 2026
Bits 8 to 15 of the reply, 8 bits.
- Formula
val- Range
- 0 to 255
- Unit
- Number
In testing for 1999, 2001 to 2004, 2009, 2012 to 2013, 2016, 2022, 2026. Supported for 2007 to 2008, 2010 to 2011, 2014 to 2015, 2017 to 2021. Not supported for 2000, 2005 to 2006, 2023 to 2025.
Air inlet damper target pulse TUNDRA_AIR_INLET_DAMPER_TARGET_PULSEConfirmed
- Request
21 44 - Service 21
PID 44 - Module
7C4 → 7CC - Every
1 s - Testing for 1999 to 2006, 2009, 2012 to 2013, 2016, 2022 to 2026
Example reply from a 2021 Toyota Tundra.
Bits 0 to 7 of the reply, 8 bits.
0x1C = 28 → 28
- Formula
val- Range
- 0 to 255
- Unit
- Number
Confirmed for 2007 to 2008, 2010 to 2011, 2014 to 2015, 2017 to 2021. In testing for 1999, 2001 to 2004, 2009, 2012 to 2013, 2016, 2022, 2026. Not supported for 2000, 2005 to 2006, 2023 to 2025.
Air outlet servo actual pulse, driver TUNDRA_AIR_OUTLET_SERVO_ACTU_PULSE_D
- Request
21 43 - Service 21
PID 43 - Module
7C4 → 7CC - Every
1 s - Testing for 1999 to 2006, 2009, 2012 to 2013, 2016, 2022 to 2026
Bits 8 to 15 of the reply, 8 bits.
- Formula
val- Range
- 0 to 255
- Unit
- Number
In testing for 1999, 2001 to 2004, 2009, 2012 to 2013, 2016, 2022, 2026. Supported for 2007 to 2008, 2010 to 2011, 2014 to 2015, 2017 to 2021. Not supported for 2000, 2005 to 2006, 2023 to 2025.
Air outlet servo pulse, driver TUNDRA_AIR_OUTLET_SERVO_PULSE_DConfirmed
- Request
21 43 - Service 21
PID 43 - Module
7C4 → 7CC - Every
1 s - Testing for 1999 to 2006, 2009, 2012 to 2013, 2016, 2022 to 2026
Example reply from a 2021 Toyota Tundra.
Bits 0 to 7 of the reply, 8 bits.
0x46 = 70 → 70
- Formula
val- Range
- 0 to 255
- Unit
- Number
Confirmed for 2007 to 2008, 2010 to 2011, 2014 to 2015, 2017 to 2021. In testing for 1999, 2001 to 2004, 2009, 2012 to 2013, 2016, 2022, 2026. Not supported for 2000, 2005 to 2006, 2023 to 2025.
Ambient air temperature AATSAE J1979Confirmed
- Request
01 46 - Service 01
PID 46 - Module
7E0 → 7E8 - Every
15 s
Bits 0 to 7 of the reply, 8 bits.
- Formula
(val − 40)- Range
- -40 to 215 °C
- Unit
- °C
Confirmed for 2010. Supported for 2022 to 2025.
Ambient air temperature TUNDRA_AAT_7C4Confirmed
- Request
21 22 - Service 21
PID 22 - Module
7C4 → 7CC - Every
5 s - Testing for 1999 to 2006, 2009, 2012 to 2013, 2016, 2022 to 2026
Example reply from a 2021 Toyota Tundra.
Bits 0 to 7 of the reply, 8 bits.
0x37 = 55 → (55 × 89.25 ÷ 255 − 23.3) = -4.05 °C
- Formula
(val × 89.25 ÷ 255 − 23.3)- Range
- -23.3 to 65.95 °C
- Unit
- °C
Confirmed for 2007 to 2008, 2010 to 2011, 2014 to 2015, 2017 to 2021. In testing for 1999, 2001 to 2004, 2009, 2012 to 2013, 2016, 2022, 2026. Not supported for 2000, 2005 to 2006, 2023 to 2025.
Ambient temperature TUNDRA_AMBIENT_TConfirmed
- Request
22 1F 46 - Service 22
DID 1F46 - Module
700 → 708 - Every
5 s - Testing for 1999 to 2022, 2026
Example reply from a 2025 Toyota Tundra.
Bits 0 to 7 of the reply, 8 bits.
0x12 = 18 → (18 − 40) = -22 °C
- Formula
(val − 40)- Range
- -40 to 215 °C
- Unit
- °C
Confirmed for 2023 to 2025. In testing for 1999, 2001 to 2004, 2009, 2012 to 2013, 2016, 2022, 2026. Not supported for 2000, 2005 to 2008, 2010 to 2011, 2014 to 2015, 2017 to 2021.
Ambient temperature, climate TUNDRA_AAT_7C4_V2Confirmed
- Request
22 10 02 - Service 22
DID 1002 - Module
7C4 → 7CC - Every
10 s - Testing for 1999 to 2022, 2026
Example reply from a 2025 Toyota Tundra.
Bits 0 to 15 of the reply, 16 bits. The value is signed.
0x0BFC = 3068 → (3068 ÷ 100) = 30.68 °C
- Formula
(val ÷ 100)- Range
- -327.68 to 327.67 °C
- Unit
- °C
Confirmed for 2023 to 2025. In testing for 1999 to 2022, 2026.
Blower level TUNDRA_BLOWERConfirmed
- Request
22 28 01 - Service 22
DID 2801 - Module
7C4 → 7CC - Every
10 s - Testing for 1999 to 2022, 2026
Example reply from a 2025 Toyota Tundra.
Bits 0 to 7 of the reply, 8 bits.
0x04 = 4 → 4
- Formula
val- Range
- 0 to 7
- Unit
- Number
Confirmed for 2023 to 2025. In testing for 1999 to 2022, 2026.
Blower motor speed level TUNDRA_BLOWER_MOTOR_SPEED_LEVELConfirmed
- Request
21 3C - Service 21
PID 3C - Module
7C4 → 7CC - Every
5 s - Testing for 1999 to 2013, 2016 to 2017, 2019, 2022 to 2026
Example reply from a 2021 Toyota Tundra.
Bits 0 to 7 of the reply, 8 bits.
0x18 = 24 → 24
- Formula
val- Range
- 0 to 255
- Unit
- Number
Confirmed for 2014 to 2015, 2020 to 2021. In testing for 1999, 2001 to 2004, 2009, 2012 to 2013, 2016, 2022, 2026. Supported for 2018. Not supported for 2000, 2005 to 2008, 2010 to 2011, 2017, 2019, 2023 to 2025.
Cabin temperature TUNDRA_CABIN_TConfirmed
- Request
21 21 - Service 21
PID 21 - Module
7C4 → 7CC - Every
5 s - Testing for 1999 to 2013, 2016 to 2019, 2022 to 2026
Example reply from a 2021 Toyota Tundra.
Bits 0 to 7 of the reply, 8 bits.
0x34 = 52 → (52 × 63.75 ÷ 255 − 6.5) = 6.5 °C
- Formula
(val × 63.75 ÷ 255 − 6.5)- Range
- -6.5 to 57.25 °C
- Unit
- °C
Confirmed for 2014 to 2015, 2020 to 2021. In testing for 1999, 2001 to 2004, 2009, 2012 to 2013, 2016, 2022, 2026. Not supported for 2000, 2005 to 2008, 2010 to 2011, 2017 to 2019, 2023 to 2025.
Cabin temperature TUNDRA_CABIN_T_V2Confirmed
- Request
22 10 01 - Service 22
DID 1001 - Module
7C4 → 7CC - Every
10 s - Testing for 1999 to 2022, 2026
Example reply from a 2025 Toyota Tundra.
Bits 0 to 15 of the reply, 16 bits. The value is signed.
0x0A42 = 2626 → (2626 ÷ 100) = 26.26 °C
- Formula
(val ÷ 100)- Range
- -327.68 to 327.67 °C
- Unit
- °C
Confirmed for 2023 to 2025. In testing for 1999 to 2022, 2026.
Climate set point code TUNDRA_HVAC_SET_RAWConfirmed
- Request
22 10 36 - Service 22
DID 1036 - Module
7C4 → 7CC - Every
10 s - Testing for 1999 to 2022, 2026
Example reply from a 2025 Toyota Tundra.
Bits 0 to 7 of the reply, 8 bits.
0x0D = 13 → 13
- Formula
val- Range
- 0 to 255
- Unit
- Number
Confirmed for 2023 to 2025. In testing for 1999 to 2022, 2026.
Communication with air conditioner TUNDRA_COMM_WITH_AIR_CONDITIONERConfirmed
- Request
21 24 - Service 21
PID 24 - Module
7E0 → 7E8 - Every
5 s - Testing for 1999 to 2004, 2009 to 2026
Example reply from a 2008 Toyota Tundra.
Bit 5 of the reply.
0b1 = 1 → 1
- Formula
val- Range
- 0 to 1
- Unit
- Off or on
Confirmed for 2005 to 2008. In testing for 1999, 2001 to 2004, 2009, 2012 to 2013, 2016, 2022, 2026. Not supported for 2000, 2010 to 2011, 2014 to 2015, 2017 to 2021, 2023 to 2025.
Communication with HV TUNDRA_COMMUNICATION_WITH_HVConfirmed
- Request
21 24 - Service 21
PID 24 - Module
7E0 → 7E8 - Every
5 s - Testing for 1999 to 2004, 2009 to 2026
Example reply from a 2008 Toyota Tundra.
Bit 2 of the reply.
0b1 = 1 → 1
- Formula
val- Range
- 0 to 1
- Unit
- Off or on
Confirmed for 2005 to 2008. In testing for 1999, 2001 to 2004, 2009, 2012 to 2013, 2016, 2022, 2026. Not supported for 2000, 2010 to 2011, 2014 to 2015, 2017 to 2021, 2023 to 2025.
Communication with valvematic TUNDRA_COMM_WITH_VALVEMATIC_COMMConfirmed
- Request
21 24 - Service 21
PID 24 - Module
7E0 → 7E8 - Every
5 s - Testing for 1999 to 2004, 2009 to 2026
Example reply from a 2008 Toyota Tundra.
Bit 6 of the reply.
0b1 = 1 → 1
- Formula
val- Range
- 0 to 1
- Unit
- Number
Confirmed for 2005 to 2008. In testing for 1999, 2001 to 2004, 2009, 2012 to 2013, 2016, 2022, 2026. Not supported for 2000, 2010 to 2011, 2014 to 2015, 2017 to 2021, 2023 to 2025.
Evaporator fin thermistor TUNDRA_EVAP_FIN_THERMISTORConfirmed
- Request
21 4B - Service 21
PID 4B - Module
7C4 → 7CC - Every
5 s - Testing for 1999 to 2006, 2009, 2012 to 2013, 2016, 2022 to 2026
Example reply from a 2021 Toyota Tundra.
Bits 0 to 7 of the reply, 8 bits.
0x54 = 84 → (84 × 89.25 ÷ 255 − 29.7) = -0.3 °C
- Formula
(val × 89.25 ÷ 255 − 29.7)- Range
- -29.7 to 59.55 °C
- Unit
- °C
Confirmed for 2007 to 2008, 2010 to 2011, 2014 to 2015, 2017 to 2021. In testing for 1999, 2001 to 2004, 2009, 2012 to 2013, 2016, 2022, 2026. Not supported for 2000, 2005 to 2006, 2023 to 2025.
Evaporator target temperature TUNDRA_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 1999, 2001 to 2004, 2009, 2012 to 2013, 2016, 2022, 2026. Not supported for 2000, 2005 to 2008, 2010 to 2011, 2014 to 2015, 2017 to 2021, 2023 to 2025.
Set temperature, driver side TUNDRA_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 1999, 2001 to 2004, 2009, 2012 to 2013, 2016, 2022, 2026. Not supported for 2000, 2005 to 2008, 2010 to 2011, 2014 to 2015, 2017 to 2021, 2023 to 2025.
Solar sensor, driver side TUNDRA_SOLAR_DRIVERConfirmed
- Request
21 24 - Service 21
PID 24 - Module
7C4 → 7CC - Every
1 s - Testing for 1999 to 2013, 2016 to 2026
Bits 0 to 7 of the reply, 8 bits.
- Formula
val- Range
- 0 to 255
- Unit
- Number
Confirmed for 2014 to 2015. In testing for 1999, 2001 to 2004, 2009, 2012 to 2013, 2016, 2022, 2026. Not supported for 2000, 2005 to 2008, 2010 to 2011, 2017 to 2021, 2023 to 2025.
