01279

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01279 - Longitudinal Acceleration Sensor (G251)

01279 - Longitudinal Acceleration Sensor (G251): Implausible Signal

Possible Symptoms

  • Malfunction Indicator Lamp (MIL) active

Possible Causes

  • Longitudinal Acceleration Sensor (G251) Calibration not performed
  • Wiring/Connectors from/to Longitudinal Acceleration Sensor (G251) faulty

Possible Solutions

  • Check Longitudinal Acceleration Sensor (G251)
    • Use Measuring Value Blocks (MVB) to check Sensor Signal for plausibility
    • Check Installation Position of Longitudinal Acceleration Sensor (G251)
  • Perform Longitudinal Acceleration Sensor (G251) Calibration
  • Check Wiring/Connectors from/to Longitudinal Acceleration Sensor (G251)


01279 - Longitudinal Acceleration Sensor (G251): No or Incorrect Basic Setting / Adaptation

Possible Causes

  • Longitudinal Acceleration Sensor (G251) Basic Setting lost/not performed

Possible Solutions

  • Perform Longitudinal Acceleration Sensor (G251) Basic Setting


Special Notes

  • The Longitudinal Acceleration Sensor - G251, is only installed for vehicles that have at least one of the following options:
    • 1X1: Four-wheel drive
    • UG1: Hill start assist
    • UG4: Hill hold
    • 7X5: Park assist
    • 7X6: Park Assist with rear camera
    • 8T3: Distance control (ADC)
    • 7L6: Start-Stop system
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