Stihl Overheating of Motor or Electronics

Robot lawnmower emits a burning smell or shows signs of overheating during operation.

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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

Blocked cooling vents, Overloaded mowing motor due to tall grass, Failing drive or mowing motor, High ambient temperature combined with long duty cycles

How to Fix / Troubleshooting

Safety first: Immediately switch the mower OFF and disconnect from the docking station. Do not continue to operate if you smell burning.

  • Inspect for obstructions: Check the cutting disc and wheels for jams that could overload the motors.
  • Clean vents: Remove grass and dust from any ventilation openings.
  • Reduce workload: Raise the cutting height and shorten mowing sessions, allowing cool-down periods between runs.

If the burning smell persists or visible discoloration appears on plastic near motors or electronics, stop using the mower and have it inspected by a Stihl technician immediately.

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Repair Difficulty

Professional Required 5/5

Required Part

Mowing Motor / Drive Motor
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