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Subaru Ascent

Battery parameters

The Subaru Ascent has 36 battery parameters.

● Confirmed◆ In testing○ Supported× Not supported

How to read a parameter card

Battery terminal voltage SUBARU_BAT_TERMINAL_VOLTAGEConfirmed

Pelican can show this parameter as the starter battery voltage.

  • Request22 13 21
  • Service 22DID 1321
  • Module7A2 → 7AA
  • Every5 s
  • Testing

Example reply from a 2025 Subaru Ascent.

Bits 0 to 15 of the reply, 16 bits.

0x37B1 = 14257 → (14257 ÷ 1000) = 14.257 V

Formula
(val ÷ 1000)
Range
0 to 65.535 V
Unit
V

Confirmed for 2023 to 2025. In testing for 2020, 2026. Not supported for 2019, 2021 to 2022.

  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.

12V aux battery temperature SUBARU_12V_AUX_BAT_T

  • Request22 20 E2
  • Service 22DID 20E2
  • Module7E7 → 7EF
  • Every1 s
  • Testing

Bits 0 to 7 of the reply, 8 bits.

Formula
(val ÷ 2 − 40)
Range
-40 to 87.5 °C
Unit
°C

In testing for 2026. Not supported for 2019 to 2025.

12V aux battery voltage SUBARU_12V_AUX_BAT_VOLTAGE

Pelican can show this parameter as the starter battery voltage.

  • Request22 10 37
  • Service 22DID 1037
  • Module7E7 → 7EF
  • Every1 s
  • Testing

Bits 0 to 7 of the reply, 8 bits.

Formula
(val × 25.5 ÷ 255)
Range
0 to 25.5 V
Unit
V

In testing for 2026. Not supported for 2019 to 2025.

12V battery current SUBARU_12V_CConfirmed

  • Request22 11 35
  • Service 22DID 1135
  • Module7A2
  • Every1 s
  • Testing

Example reply from a 2025 Subaru Ascent.

Bits 0 to 7 of the reply, 8 bits.

0xFD = 253 → (253 − 128) = 125 mA

Formula
(val − 128)
Range
-128 to 127 mA
Unit
mA

Confirmed for 2020, 2023 to 2025. In testing for 2026. Not supported for 2019, 2021 to 2022.

12V battery temperature SUBARU_12V_TConfirmed

  • Request22 11 36
  • Service 22DID 1136
  • Module7A2
  • Every5 s
  • Testing

Example reply from a 2025 Subaru Ascent.

Bits 0 to 7 of the reply, 8 bits.

0x8C = 140 → (140 − 40) = 100 °C

Formula
(val − 40)
Range
-40 to 215 °C
Unit
°C

Confirmed for 2019 to 2020, 2023 to 2025. In testing for 2026. Not supported for 2021 to 2022.

12V engine restart battery current SUBARU_12V_CURRENT

  • Request22 20 12
  • Service 22DID 2012
  • Module7E7 → 7EF
  • Every1 s
  • Testing

Bits 0 to 15 of the reply, 16 bits.

Formula
(val ÷ 10 − 2000)
Range
-2000 to 4553.5 A
Unit
A

In testing for 2026. Not supported for 2019 to 2025.

12V engine restart battery soc SUBARU_12V_ENGINE_RESTART_BAT_SOC

  • Request22 10 77
  • Service 22DID 1077
  • Module7E7 → 7EF
  • Every1 s
  • Testing

Bits 0 to 7 of the reply, 8 bits.

Formula
(val × 127.5 ÷ 255)
Range
0 to 100 %
Unit
%

In testing for 2026. Not supported for 2019 to 2025.

12V engine restart battery soc control SUBARU_12V_SOC_CONTROL

  • Request22 20 14
  • Service 22DID 2014
  • Module7E7 → 7EF
  • Every1 s
  • Testing

Bits 0 to 7 of the reply, 8 bits.

Formula
(val × 127.5 ÷ 255)
Range
0 to 100 %
Unit
%

In testing for 2026. Not supported for 2019 to 2025.

12V engine restart battery temperature SUBARU_12V_ENGINE_RESTART_BAT_T

  • Request22 10 79
  • Service 22DID 1079
  • Module7E7 → 7EF
  • Every1 s
  • Testing

Bits 0 to 7 of the reply, 8 bits.

Formula
(val − 40)
Range
-40 to 215 °C
Unit
°C

In testing for 2026. Not supported for 2019 to 2025.

12V engine restart battery voltage SUBARU_12V_ENGINE_RESTART_BAT_VOLTAGE

  • Request22 10 39
  • Service 22DID 1039
  • Module7E7 → 7EF
  • Every1 s
  • Testing

Bits 0 to 7 of the reply, 8 bits.

Formula
(val × 25.5 ÷ 255)
Range
0 to 25.5 V
Unit
V

In testing for 2026. Not supported for 2019 to 2025.

Battery charge/discharge current SUBARU_BAT_CHARGE_DISCHARGE_CURRENTConfirmed

  • Request22 13 22
  • Service 22DID 1322
  • Module7A2 → 7AA
  • Every1 s
  • Testing

Example reply from a 2025 Subaru Ascent.

Bits 0 to 31 of the reply, 32 bits.

0x001E8D42 = 2002242 → (2002242 × 10 ÷ 10000 − 2000) = 2.242 A

Formula
(val × 10 ÷ 10000 − 2000)
Range
-2000 to 4292967 A
Unit
A

Confirmed for 2023 to 2025. In testing for 2020, 2026. Not supported for 2019, 2021 to 2022.

Battery terminal voltage SUBARU_BAT_TERMINAL_VOLTAGEConfirmed

Pelican can show this parameter as the starter battery voltage.

  • Request22 13 21
  • Service 22DID 1321
  • Module7A2 → 7AA
  • Every5 s
  • Testing

Example reply from a 2025 Subaru Ascent.

Bits 0 to 15 of the reply, 16 bits.

0x37B1 = 14257 → (14257 ÷ 1000) = 14.257 V

Formula
(val ÷ 1000)
Range
0 to 65.535 V
Unit
V

Confirmed for 2023 to 2025. In testing for 2020, 2026. Not supported for 2019, 2021 to 2022.

Control module voltage VPWRSAE J1979Confirmed

Power input to the OBD control module. VPWR is normally battery voltage, less any voltage drop in the circuit between the battery and the control module.

Pelican can show this parameter as the starter battery voltage.

  • Request01 42
  • Service 01PID 42
  • Module7E0 → 7E8
  • Every10 s

Bits 0 to 15 of the reply, 16 bits.

Formula
(val ÷ 1000)
Range
0 to 65535 V
Unit
V

Confirmed for 2019 to 2022. Supported for 2023 to 2025.

Estimated battery temperature SUBARU_ESTIMATED_BAT_TConfirmed

  • Request22 13 23
  • Service 22DID 1323
  • Module7A2 → 7AA
  • Every5 s
  • Testing

Example reply from a 2025 Subaru Ascent.

Bits 0 to 15 of the reply, 16 bits.

0x0068 = 104 → (104 ÷ 2 − 40) = 12 °C

Formula
(val ÷ 2 − 40)
Range
-40 to 32727.5 °C
Unit
°C

Confirmed for 2023 to 2025. In testing for 2020, 2026. Not supported for 2019, 2021 to 2022.

High voltage battery cell temperature estimated SUBARU_HVBAT_CELL_T

  • Request22 11 43
  • Service 22DID 1143
  • Module7E3 → 7EB
  • Every1 s
  • Testing

Bits 0 to 15 of the reply, 16 bits.

Formula
(val ÷ 10 − 100)
Range
-100 to 6453.5 °C
Unit
°C

In testing for 2019 to 2021, 2023 to 2026. Not supported for 2022.

High voltage battery charge power SUBARU_HVBAT_CHG_POWER

  • Request22 20 26
  • Service 22DID 2026
  • Module7E7 → 7EF
  • Every1 s
  • Testing

Bits 0 to 7 of the reply, 8 bits.

Formula
(val ÷ 10)
Range
0 to 25.5 kW
Unit
kW

In testing for 2019 to 2021, 2023 to 2026. Not supported for 2022.

High voltage battery cooling fan duty output SUBARU_HVBAT_COOLING_FAN_DUTY

  • Request22 10 84
  • Service 22DID 1084
  • Module7E6 → 7EE
  • Every1 s
  • Testing

Bits 0 to 31 of the reply, 32 bits.

Formula
val
Range
0 to 100 %
Unit
%

In testing for 2019 to 2021, 2023 to 2026. Not supported for 2022.

High voltage battery cooling fan duty, target SUBARU_HVBAT_COOLING_FAN_DUTY_TGT

  • Request22 10 7A
  • Service 22DID 107A
  • Module7E7 → 7EF
  • Every1 s
  • Testing

Bits 0 to 7 of the reply, 8 bits.

Formula
val
Range
0 to 100 %
Unit
%

In testing for 2019 to 2021, 2023 to 2026. Not supported for 2022.

High voltage battery cooling fan duty, target SUBARU_HVBAT_COOLING_FAN_DUTY_TGT_7E7

  • Request22 20 0C
  • Service 22DID 200C
  • Module7E7 → 7EF
  • Every1 s
  • Testing

Bits 0 to 15 of the reply, 16 bits.

Formula
val
Range
0 to 65535 rpm
Unit
rpm

In testing for 2019 to 2021, 2023 to 2026. Not supported for 2022.

High voltage battery cooling fan duty, target SUBARU_HVBAT_COOLING_FAN_TGT

  • Request22 10 82
  • Service 22DID 1082
  • Module7E6 → 7EE
  • Every1 s
  • Testing

Bits 0 to 7 of the reply, 8 bits.

Formula
val
Range
0 to 100 %
Unit
%

In testing for 2019 to 2021, 2023 to 2026. Not supported for 2022.

High voltage battery cooling fan speed SUBARU_HVBAT_COOLING_FAN

  • Request22 10 81
  • Service 22DID 1081
  • Module7E6 → 7EE
  • Every1 s
  • Testing

Bits 0 to 15 of the reply, 16 bits.

Formula
val
Range
0 to 65535 rpm
Unit
rpm

In testing for 2019 to 2021, 2023 to 2026. Not supported for 2022.

High voltage battery current SUBARU_HVBAT_CURRENT

  • Request22 20 0A
  • Service 22DID 200A
  • Module7E7 → 7EF
  • Every1 s
  • Testing

Bits 0 to 15 of the reply, 16 bits.

Formula
(val ÷ 10 − 200)
Range
-200 to 6353.5 A
Unit
A

In testing for 2019 to 2021, 2023 to 2026. Not supported for 2022.

High voltage battery discharge power SUBARU_HVBAT_DCHG_POWER

  • Request22 20 25
  • Service 22DID 2025
  • Module7E7 → 7EF
  • Every1 s
  • Testing

Bits 0 to 7 of the reply, 8 bits.

Formula
(val ÷ 10)
Range
0 to 25.5 kW
Unit
kW

In testing for 2019 to 2021, 2023 to 2026. Not supported for 2022.

High voltage battery intake air temperature SUBARU_HVBAT_IAT

  • Request22 10 2D
  • Service 22DID 102D
  • Module7E3 → 7EB
  • Every1 s
  • Testing

Bits 0 to 15 of the reply, 16 bits.

Formula
(val ÷ 2 − 100)
Range
-100 to 32667.5 °C
Unit
°C

In testing for 2019 to 2021, 2023 to 2026. Not supported for 2022.

High voltage battery intake air temperature SUBARU_HVBAT_IAT_7E7

  • Request22 20 24
  • Service 22DID 2024
  • Module7E7 → 7EF
  • Every1 s
  • Testing

Bits 0 to 7 of the reply, 8 bits.

Formula
(val ÷ 2 − 40)
Range
-40 to 87.5 %
Unit
%

In testing for 2019 to 2021, 2023 to 2026. Not supported for 2022.

High voltage battery state of charge SUBARU_HVBAT_ST_CHG

  • Request22 10 21
  • Service 22DID 1021
  • Module7E3 → 7EB
  • Every1 s
  • Testing

Bits 0 to 7 of the reply, 8 bits.

Formula
(val ÷ 2)
Range
0 to 100 %
Unit
%

In testing for 2019 to 2021, 2023 to 2026. Not supported for 2022.

High voltage battery state of charge SUBARU_HVBAT_ST_CHG_7E7

  • Request22 10 33
  • Service 22DID 1033
  • Module7E7 → 7EF
  • Every1 s
  • Testing

Bits 0 to 7 of the reply, 8 bits.

Formula
(val ÷ 2)
Range
0 to 100 %
Unit
%

In testing for 2019 to 2021, 2023 to 2026. Not supported for 2022.

High voltage battery state of health SUBARU_HVBAT_ST_HEALTH

  • Request22 20 21
  • Service 22DID 2021
  • Module7E7 → 7EF
  • Every1 s
  • Testing

Bits 0 to 7 of the reply, 8 bits.

Formula
(val ÷ 2)
Range
0 to 100 %
Unit
%

In testing for 2019 to 2021, 2023 to 2026. Not supported for 2022.

High voltage battery temperature 1 SUBARU_HVBAT_T_1

  • Request22 10 2A
  • Service 22DID 102A
  • Module7E3 → 7EB
  • Every1 s
  • Testing

Bits 0 to 15 of the reply, 16 bits.

Formula
(val ÷ 2 − 100)
Range
-100 to 32667.5 °C
Unit
°C

In testing for 2019 to 2021, 2023 to 2026. Not supported for 2022.

High voltage battery temperature 2 SUBARU_HVBAT_T_2

  • Request22 10 2B
  • Service 22DID 102B
  • Module7E3 → 7EB
  • Every1 s
  • Testing

Bits 0 to 15 of the reply, 16 bits.

Formula
(val ÷ 2 − 100)
Range
-100 to 32667.5 °C
Unit
°C

In testing for 2019 to 2021, 2023 to 2026. Not supported for 2022.

High voltage battery temperature 3 SUBARU_HVBAT_T_3

  • Request22 10 2C
  • Service 22DID 102C
  • Module7E3 → 7EB
  • Every1 s
  • Testing

Bits 0 to 15 of the reply, 16 bits.

Formula
(val ÷ 2 − 100)
Range
-100 to 32667.5 °C
Unit
°C

In testing for 2019 to 2021, 2023 to 2026. Not supported for 2022.

High voltage battery temperature max SUBARU_HVBAT_T_MAX

  • Request22 20 22
  • Service 22DID 2022
  • Module7E7 → 7EF
  • Every1 s
  • Testing

Bits 0 to 7 of the reply, 8 bits.

Formula
(val ÷ 2 − 40)
Range
-40 to 87.5 %
Unit
%

In testing for 2019 to 2021, 2023 to 2026. Not supported for 2022.

High voltage battery temperature min SUBARU_HVBAT_T_MIN

  • Request22 20 23
  • Service 22DID 2023
  • Module7E7 → 7EF
  • Every1 s
  • Testing

Bits 0 to 7 of the reply, 8 bits.

Formula
(val ÷ 2 − 40)
Range
-40 to 87.5 %
Unit
%

In testing for 2019 to 2021, 2023 to 2026. Not supported for 2022.

High voltage battery total voltage SUBARU_HVBAT_TOT_V

  • Request22 20 09
  • Service 22DID 2009
  • Module7E7 → 7EF
  • Every1 s
  • Testing

Bits 0 to 15 of the reply, 16 bits.

Formula
(val ÷ 10)
Range
0 to 6553.5 V
Unit
V

In testing for 2019 to 2021, 2023 to 2026. Not supported for 2022.

Mass airflow sensor voltage SUBARU_MAF_VOLTAGEConfirmed

  • Request22 10 A1
  • Service 22DID 10A1
  • Module7A2 → 7AA
  • Every1 s
  • Testing

Example reply from a 2025 Subaru Ascent.

Bits 0 to 7 of the reply, 8 bits.

0x00 = 0 → (0 ÷ 50) = 0 V

Formula
(val ÷ 50)
Range
0 to 5.1 V
Unit
V

Confirmed for 2023 to 2025. In testing for 2020, 2026. Not supported for 2019, 2021 to 2022.

Remaining battery capacity SUBARU_REMAINING_BAT_CAPACITYConfirmed

Pelican can show this parameter as the state of charge.

  • Request22 13 24
  • Service 22DID 1324
  • Module7A2 → 7AA
  • Every1 s
  • Testing

Example reply from a 2025 Subaru Ascent.

Bits 0 to 15 of the reply, 16 bits.

0x03C1 = 961 → (961 ÷ 10) = 96.1 %

Formula
(val ÷ 10)
Range
0 to 100 %
Unit
%

Confirmed for 2023 to 2025. In testing for 2020, 2026. Not supported for 2019, 2021 to 2022.

Throttle motor voltage SUBARU_THROTTLE_MOTOR_VConfirmed

  • Request22 12 75
  • Service 22DID 1275
  • Module7E0 → 7E8
  • Every1 s
  • Testing

Example reply from a 2022 Subaru Ascent.

Bits 0 to 7 of the reply, 8 bits.

0xAC = 172 → (172 × 2 ÷ 25) = 13.76 V

Formula
(val × 2 ÷ 25)
Range
0 to 20.4 V
Unit
V

Confirmed for 2022. In testing for 2019 to 2021, 2023 to 2026.

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