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Mercedes-Benz G-Class

Battery parameters

The Mercedes-Benz G-Class has 10 battery parameters.

● Confirmed◆ In testing○ Supported× Not supported

How to read a parameter card

Control module voltage VPWRConfirmed

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, 2025. Supported for 2011, 2017.

  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.

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, 2025. Supported for 2011, 2017.

Enhanced Hybrid/EV Vehicle Charging State EHEV_MODESAE J1979Confirmed

  • Request01 9A
  • Service 01PID 9A
  • Module7E0 → 7E8
  • Every250 ms

Bits 1 to 2 of the reply, 2 bits.

Unit
Named states
States
Raw valueStateMeaning
0CSMCharge sustaining mode
1CDMCharge depleting mode
2CIMCharge increasing mode

Confirmed for 2025.

Hybrid battery pack remaining charge BAT_SOCSAE J1979Confirmed

The percent remaining level of charge for a battery pack used for propulsion, expressed as a percentage of total useable battery energy, commonly referred to as State Of Charge (SOC).

Pelican can show this parameter as the state of charge.

  • Request01 5B
  • Service 01PID 5B
  • Module7E0 → 7E8
  • Every1 s

Bits 0 to 7 of the reply, 8 bits.

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

Confirmed for 2025.

Hybrid/EV Battery System Current HEV_BATT_ASAE J1979Confirmed

  • Request01 9A
  • Service 01PID 9A
  • Module7E0 → 7E8
  • Every250 ms

Bits 32 to 47 of the reply, 16 bits. The value is signed.

Formula
(val ÷ 10)
Range
-3276.8 to 3276.7 A
Unit
A

Confirmed for 2025.

Hybrid/EV Battery System Voltage HEV_BATT_VSAE J1979Confirmed

  • Request01 9A
  • Service 01PID 9A
  • Module7E0 → 7E8
  • Every250 ms

Bits 16 to 31 of the reply, 16 bits.

Formula
(val ÷ 64)
Range
0 to 1023.98 V
Unit
V

Confirmed for 2025.

Hybrid/EV Vehicle Charging State HEV_MODESAE J1979Confirmed

  • Request01 9A
  • Service 01PID 9A
  • Module7E0 → 7E8
  • Every250 ms

Bit 0 of the reply.

Unit
Named states
States
Raw valueStateMeaning
0CSMCharge sustaining mode
1CDMCharge depleting mode

Confirmed for 2025.

Battery › Internal

Enhanced Hybrid/EV Vehicle Charging State supported? EHEV_MODE_SUPSAE J1979Confirmed

  • Request01 9A
  • Service 01PID 9A
  • Module7E0 → 7E8
  • Every250 ms

Bit 4 of the reply.

Formula
val
Range
0 to 1
Unit
No or yes

Confirmed for 2025.

Hybrid/EV Battery Current supported? HEV_BATT_A_SUPSAE J1979Confirmed

  • Request01 9A
  • Service 01PID 9A
  • Module7E0 → 7E8
  • Every250 ms

Bit 5 of the reply.

Formula
val
Range
0 to 1
Unit
No or yes

Confirmed for 2025.

Hybrid/EV Battery Voltage supported? HEV_BATT_V_SUPSAE J1979Confirmed

  • Request01 9A
  • Service 01PID 9A
  • Module7E0 → 7E8
  • Every250 ms

Bit 6 of the reply.

Formula
val
Range
0 to 1
Unit
No or yes

Confirmed for 2025.

Hybrid/EV Vehicle Charging State supported? HEV_MODE_SUPSAE J1979Confirmed

  • Request01 9A
  • Service 01PID 9A
  • Module7E0 → 7E8
  • Every250 ms

Bit 7 of the reply.

Formula
val
Range
0 to 1
Unit
No or yes

Confirmed for 2025.

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