Bosch Intermittent Power Supply / Internal Connection Fault

Robot mower randomly restarts or powers off during mowing without showing an error

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.

Possible Causes

Loose battery connector, Cracked solder joint on main board, Faulty main power switch, Vibration-induced cable break

Safety: Turn OFF the mower and remove from the lawn.

Check main switch: Ensure the ON/OFF switch has a firm, positive action and is not loose.
Inspect battery connector: If accessible, verify the battery plug is fully seated and locked.
Gently tap test: With the mower on a bench (and OFF), lightly tap the housing to listen for loose components.
Service required: If random shutdowns continue, a technician should inspect and possibly replace the main control board or main power switch.

Hard 4/5

Main Power Switch

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