Sunseeker Intermittent Power Loss

Robot mower occasionally shuts down completely in the middle of the lawn with no error code

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

Loose battery connector, Damaged main power switch, Internal wiring harness intermittent, Over-sensitive BMS cutoff

How to Fix / Troubleshooting

Safety first: Turn OFF the mower and remove it from the lawn before opening covers.

  • Step 1 – Check main switch: Toggle the Sunseeker main power switch several times and ensure it feels firm. Replace if it feels loose or intermittent.
  • Step 2 – Inspect battery connector: Remove the battery cover and verify the battery plug is fully seated and locked.
  • Step 3 – Wiggle test: With the mower ON (blade disabled), gently move the wiring harnesses to see if power cuts out. If so, locate and repair/replace the affected harness.
  • Step 4 – Battery test: If available, have the battery pack load-tested to check for internal faults.
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Repair Difficulty

Hard 4/5

Required Part

Sunseeker Main Power Switch
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