Transmission parameters
The Kia K4 has 15 transmission parameters.
● Confirmed◆ In testing○ Supported× Not supported
Clutch #1 temperature K4_CLUTCH_1_T
Part of the dual clutch transition
- Request
22 01 A4 - Service 22
DID 01A4 - Module
7E1 → 7E9 - Every
250 ms - Testing
Bits 232 to 247 of the reply, 16 bits.
- Formula
(val × 2 − 40)- Range
- -40 to 300 °C
- Unit
- °C
In testing for 2024, 2026. Not supported for 2025.
Clutch #2 temperature K4_CLUTCH_2_T
Part of the dual clutch transition
- Request
22 01 A4 - Service 22
DID 01A4 - Module
7E1 → 7E9 - Every
250 ms - Testing
Bits 248 to 263 of the reply, 16 bits.
- Formula
(val × 2 − 40)- Range
- -40 to 300 °C
- Unit
- °C
In testing for 2024, 2026. Not supported for 2025.
Commanded gear K4_COMMANDED_GEAR
- Request
21 A0 - Service 21
PID A0 - Module
7E1 → 7E9 - Every
250 ms - Testing
Bits 176 to 183 of the reply, 8 bits.
- Formula
val- Range
- 0 to 255
- Unit
- Number
In testing for 2024, 2026. Not supported for 2025.
Commanded gear K4_COMMANDED_GEAR_7E1Confirmed
- Request
22 01 A0 - Service 22
DID 01A0 - Module
7E1 → 7E9 - Every
250 ms - Testing for 2024, 2026
Example reply from a 2025 Kia K4.
Bits 176 to 183 of the reply, 8 bits.
0x00 = 0 → 0
- Formula
val- Range
- 0 to 255
- Unit
- Number
Confirmed for 2025. In testing for 2024, 2026.
Current gear K4_CURRENT_GEAR
- Request
21 A0 - Service 21
PID A0 - Module
7E1 → 7E9 - Every
250 ms - Testing
Bits 168 to 175 of the reply, 8 bits.
- Formula
val- Range
- 0 to 255
- Unit
- Number
In testing for 2024, 2026. Not supported for 2025.
Current gear K4_CURRENT_GEAR_7E1Confirmed
- Request
22 01 A0 - Service 22
DID 01A0 - Module
7E1 → 7E9 - Every
250 ms - Testing for 2024, 2026
Example reply from a 2025 Kia K4.
Bits 168 to 175 of the reply, 8 bits.
0x00 = 0 → 0
- Formula
val- Range
- 0 to 255
- Unit
- Number
Confirmed for 2025. In testing for 2024, 2026.
Current gear K4_CURRENT_GEAR_7E1_2
- Request
21 A1 - Service 21
PID A1 - Module
7E1 → 7E9 - Every
250 ms - Testing
Bits 32 to 39 of the reply, 8 bits.
- Formula
val- Range
- 0 to 255
- Unit
- Number
In testing for 2024, 2026. Not supported for 2025.
Current gear K4_GEAR_CUR
- Request
22 01 A4 - Service 22
DID 01A4 - Module
7E1 → 7E9 - Every
250 ms - Testing
Bits 188 to 191 of the reply, 4 bits.
- Formula
val- Range
- 0 to 15
- Unit
- Number
In testing for 2024, 2026. Not supported for 2025.
Dual-clutch transmission even shaft, gear engaged K4_DUAL_CLU_TRANS_EVEN
- Request
22 01 A5 - Service 22
DID 01A5 - Module
7E1 → 7E9 - Every
5 s - Testing
Bits 40 to 47 of the reply, 8 bits.
- Formula
val- Range
- 0 to 255
- Unit
- Number
In testing for 2024, 2026. Not supported for 2025.
Dual-clutch transmission odd shaft, gear engaged K4_DUAL_CLU_TRANS_ODD
- Request
22 01 A5 - Service 22
DID 01A5 - Module
7E1 → 7E9 - Every
5 s - Testing
Bits 32 to 39 of the reply, 8 bits.
- Formula
val- Range
- 0 to 255
- Unit
- Number
In testing for 2024, 2026. Not supported for 2025.
Gear K4_GEAR_7E0
- Request
22 ED 05 - Service 22
DID ED05 - Module
7E0 → 7E8 - Every
250 ms - Testing
Bits 176 to 183 of the reply, 8 bits.
- Formula
val- Range
- 0 to 255
- Unit
- Number
In testing for 2024, 2026. Not supported for 2025.
Gear selector K4_GEARConfirmed
- Request
22 01 A0 - Service 22
DID 01A0 - Module
7E1 → 7E9 - Every
250 ms - Testing for 2024, 2026
Example reply from a 2025 Kia K4.
Bits 160 to 167 of the reply, 8 bits.
0x0B = 11 → 11
- Formula
val- Range
- 0 to 255
- Unit
- Number
Confirmed for 2025. In testing for 2024, 2026.
Next gear K4_GEAR_NXT
- Request
22 01 A4 - Service 22
DID 01A4 - Module
7E1 → 7E9 - Every
250 ms - Testing
Bits 196 to 199 of the reply, 4 bits.
- Formula
val- Range
- 0 to 15
- Unit
- Number
In testing for 2024, 2026. Not supported for 2025.
Reverse gear selected K4_REVERSE_GEARConfirmed
- Request
22 BC 04 - Service 22
DID BC04 - Module
770 → 778 - Every
1 s - Testing for 2024, 2026
Example reply from a 2025 Kia K4.
Bit 35 of the reply.
0b0 = 0 → 0
- Formula
val- Range
- 0 to 1
- Unit
- No or yes
Confirmed for 2025. In testing for 2024, 2026.
Transmission fluid temperature K4_ATF_TEMP
Pelican can show this parameter as the transmission fluid temperature.
- Request
22 21 A0 - Service 22
DID 21A0 - Module
7E0 → 7E8 - Every
10 s - Testing
Bits 16 to 23 of the reply, 8 bits.
- Formula
(val × 9 ÷ 5 − 40)- Range
- 0 to 255 °F
- Unit
- °F
In testing for 2024, 2026. Not supported for 2025.