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Automotive electrical troubleshooting

Car Electrical Issue and Dash Cam Power Supply Troubleshooting

Behnam ยท 2026-05-21 18:11:00 to 2026-05-21 18:15:18

Review: Pending Review

Summary

Behnam and another speaker discuss an issue with a hybrid car where the dash cam shows a 'halo dash cam active' message repeatedly. The problem seems related to voltage drops or interruptions in the car's electrical circuits, especially when the car comes to a stop or during regenerative braking and stop-start logic. The conversation covers how some circuits in hybrids, particularly BMWs, are not stable enough for sensitive electronics like dash cams or Raspberry Pis. They suggest trying different fuse points such as cigarette lighter sockets, infotainment power, or rear accessory sockets, and avoiding circuits managed aggressively by the body control module. The idea of using a power bank is also mentioned as a potential solution.

Facts

  • Voltage drops occur when the hybrid car comes to a stop.
  • Fuse circuits in hybrids can have voltage dips affecting sensitive electronics.
  • Certain fuse points like cigarette lighter or infotainment sockets are more stable.
  • Some circuits are managed aggressively by the body control module causing instability.
  • Power banks can help provide stable power to dash cams.

Tasks

  • Try different fuse points for dash cam power supply.
  • Avoid circuits with aggressive energy management for sensitive electronics.

Issues

  • Voltage instability in hybrid car circuits affecting dash cam operation.