E18
Makita Security Lock / PIN Error

Robot mower shows E18 and stops with message related to PIN or security

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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

Incorrect PIN entered multiple times, Keypad or display module fault, Corrupted security data on PCB

How to Fix / Troubleshooting

Safety: Ensure the mower is in your possession and not stolen; Makita security features are designed to deter theft.

  • Enter correct PIN: Carefully re-enter the correct PIN code. Check the user manual for default PIN if never changed.
  • Wait lockout period: If the mower is locked due to too many attempts, wait the specified time before trying again.
  • Keypad check: Verify that all buttons on the keypad respond correctly; stuck or non-responsive keys may cause wrong entries.
  • Owner documentation: If the PIN is lost, contact Makita support with proof of purchase for reset options.

If E18 persists with the correct PIN and working keypad, the display/keypad module or main PCB may be faulty and require replacement.

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Repair Difficulty

Medium 3/5

Required Part

Keypad / Display Module
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