Stihl Moisture Ingress / Sealing Problem

Robot lawnmower shows condensation or moisture inside the display window.

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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

Damaged housing seal, Cracked display cover, Operation in heavy rain beyond specification, Previous impact damaging seals

How to Fix / Troubleshooting

Safety first: Turn the mower OFF and remove it from wet conditions.

  • Dry the unit: Place the mower in a dry, warm, well-ventilated area for 24–48 hours. Do not use direct heat sources like hair dryers.
  • Inspect housing: Look for visible cracks or gaps around the display and control panel. Do not attempt to reseal with household sealants.
  • Adjust usage: Avoid operating the mower in standing water or during extreme downpours.

Persistent moisture or visible water inside the electronics requires professional disassembly, drying, and likely replacement of seals or the control panel by a Stihl service center.

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Repair Difficulty

Hard 4/5

Required Part

Control Panel Housing / Seals
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