E18
Bosch Top Cover / Service Lid Open Sensor Error

Robot vacuum displays E18; top cover or service lid icon may flash; robot refuses to start.

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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

Top cover not fully closed, Lid sensor switch misaligned, Broken lid latch, Faulty lid microswitch

How to Fix / Troubleshooting

Safety first: Turn the robot OFF before manipulating the cover.

  • 1. Open and close lid: Fully open the top cover or service lid, then close it firmly until you hear a click.
  • 2. Inspect latch: Check that the latch mechanism is intact and not cracked or bent.
  • 3. Clean around latch area: Remove dust or debris that might prevent full closure.
  • 4. Gentle pressure test: With the robot ON, press down gently on the lid and try starting a cleaning cycle. If it works only when pressed, the switch or latch needs adjustment or replacement.
  • 5. Persistent E18: The lid sensor switch inside the housing may be defective and should be replaced by a technician.
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Repair Difficulty

Medium 3/5

Required Part

Lid / Cover Microswitch
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