Display shows E020, and the mower cannot be started with the PIN.

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

Incorrect PIN entered too many times, Keypad malfunction, Corrupted security data on the main board

Safety: No special physical risk, but avoid disassembling security-related components.

Wait for lockout period: If too many incorrect PIN attempts were made, wait the specified time (see manual) before trying again.
Verify PIN: Double-check the PIN from your Bosch documentation or app.
Use app or owner verification: Some models allow PIN reset via the Bosch app or through customer support after proof of ownership.
If the keypad is unresponsive: See keypad-related error procedures; the keypad assembly may be faulty.
Persistent E020: This may indicate corrupted security data on the main control board, requiring authorized service replacement.

Hard 4/5

Main Control Board

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