To update your security code, follow these steps while the door is open: Open the battery cover on the interior unit. Press the once.
| Problem | Likely Cause | Solution | |--------|--------------|----------| | No response from keypad | Batteries dead or reversed | Replace batteries / check orientation | | Fingerprint not recognized | Dirty sensor or dry finger | Clean sensor; moisturize fingertip | | Lock beeps 5 times after PIN | Wrong PIN | Re-enter correctly; check lockout period | | Thumb turn feels stiff | Door misaligned | Adjust strike plate position | | Auto-lock not working | Feature disabled | Enable via system settings (delay >0) | Zeus Z3 Digital Lock Manual
If the batteries are completely dead and you did not use the mechanical key: To update your security code, follow these steps