Tire parameters
The smart fortwo has 16 tire parameters.
● Confirmed◆ In testing○ Supported× Not supported
Tire sensor 1 battery low FORTWO_TPMS_LOWBAT_1
- Request
21 74 - Service 21
PID 74 - Module
745 → 765 - Every
60 s - Testing
Bit 175 of the reply.
- Formula
val- Range
- 0 to 1
- Unit
- Yes or no
In testing for 1998 to 2024.
Tire sensor 1 missing FORTWO_TPMS_MISSING_1
- Request
21 79 - Service 21
PID 79 - Module
745 → 765 - Every
60 s - Testing
Bit 207 of the reply.
- Formula
val- Range
- 0 to 1
- Unit
- Yes or no
In testing for 1998 to 2024.
Tire sensor 1 pressure FORTWO_TP_1
- Request
21 74 - Service 21
PID 74 - Module
745 → 765 - Every
60 s - Testing
Bits 64 to 79 of the reply, 16 bits.
- Formula
(val × 0.75)- Range
- 0 to 49151.25 kPa
- Unit
- kPa
In testing for 1998 to 2024.
Tire sensor 1 temperature FORTWO_TT_1
- Request
21 74 - Service 21
PID 74 - Module
745 → 765 - Every
60 s - Testing
Bits 128 to 135 of the reply, 8 bits.
- Formula
(val − 30)- Range
- -30 to 225 °C
- Unit
- °C
In testing for 1998 to 2024.
Tire sensor 2 battery low FORTWO_TPMS_LOWBAT_2
- Request
21 74 - Service 21
PID 74 - Module
745 → 765 - Every
60 s - Testing
Bit 174 of the reply.
- Formula
val- Range
- 0 to 1
- Unit
- Yes or no
In testing for 1998 to 2024.
Tire sensor 2 missing FORTWO_TPMS_MISSING_2
- Request
21 79 - Service 21
PID 79 - Module
745 → 765 - Every
60 s - Testing
Bit 206 of the reply.
- Formula
val- Range
- 0 to 1
- Unit
- Yes or no
In testing for 1998 to 2024.
Tire sensor 2 pressure FORTWO_TP_2
- Request
21 74 - Service 21
PID 74 - Module
745 → 765 - Every
60 s - Testing
Bits 80 to 95 of the reply, 16 bits.
- Formula
(val × 0.75)- Range
- 0 to 49151.25 kPa
- Unit
- kPa
In testing for 1998 to 2024.
Tire sensor 2 temperature FORTWO_TT_2
- Request
21 74 - Service 21
PID 74 - Module
745 → 765 - Every
60 s - Testing
Bits 136 to 143 of the reply, 8 bits.
- Formula
(val − 30)- Range
- -30 to 225 °C
- Unit
- °C
In testing for 1998 to 2024.
Tire sensor 3 battery low FORTWO_TPMS_LOWBAT_3
- Request
21 74 - Service 21
PID 74 - Module
745 → 765 - Every
60 s - Testing
Bit 173 of the reply.
- Formula
val- Range
- 0 to 1
- Unit
- Yes or no
In testing for 1998 to 2024.
Tire sensor 3 missing FORTWO_TPMS_MISSING_3
- Request
21 79 - Service 21
PID 79 - Module
745 → 765 - Every
60 s - Testing
Bit 205 of the reply.
- Formula
val- Range
- 0 to 1
- Unit
- Yes or no
In testing for 1998 to 2024.
Tire sensor 3 pressure FORTWO_TP_3
- Request
21 74 - Service 21
PID 74 - Module
745 → 765 - Every
60 s - Testing
Bits 96 to 111 of the reply, 16 bits.
- Formula
(val × 0.75)- Range
- 0 to 49151.25 kPa
- Unit
- kPa
In testing for 1998 to 2024.
Tire sensor 3 temperature FORTWO_TT_3
- Request
21 74 - Service 21
PID 74 - Module
745 → 765 - Every
60 s - Testing
Bits 144 to 151 of the reply, 8 bits.
- Formula
(val − 30)- Range
- -30 to 225 °C
- Unit
- °C
In testing for 1998 to 2024.
Tire sensor 4 battery low FORTWO_TPMS_LOWBAT_4
- Request
21 74 - Service 21
PID 74 - Module
745 → 765 - Every
60 s - Testing
Bit 172 of the reply.
- Formula
val- Range
- 0 to 1
- Unit
- Yes or no
In testing for 1998 to 2024.
Tire sensor 4 missing FORTWO_TPMS_MISSING_4
- Request
21 79 - Service 21
PID 79 - Module
745 → 765 - Every
60 s - Testing
Bit 204 of the reply.
- Formula
val- Range
- 0 to 1
- Unit
- Yes or no
In testing for 1998 to 2024.
Tire sensor 4 pressure FORTWO_TP_4
- Request
21 74 - Service 21
PID 74 - Module
745 → 765 - Every
60 s - Testing
Bits 112 to 127 of the reply, 16 bits.
- Formula
(val × 0.75)- Range
- 0 to 49151.25 kPa
- Unit
- kPa
In testing for 1998 to 2024.
Tire sensor 4 temperature FORTWO_TT_4
- Request
21 74 - Service 21
PID 74 - Module
745 → 765 - Every
60 s - Testing
Bits 152 to 159 of the reply, 8 bits.
- Formula
(val − 30)- Range
- -30 to 225 °C
- Unit
- °C
In testing for 1998 to 2024.
