If you want to restart your lock, do the following:
1. Remove Cap
Release the knob's cap using the tool shipped with your smart lock, as shown in the picture above. Make sure to take proper measures to avoid electrostatic discharge that can destroy your device, e.g. by touching a radiator. Gently pull off the cap from the knob.
2. Unplug Battery
Disconnect the battery by unplugging the battery connector. Try getting a grip on the connector itself rather than just the cable, to avoid tearing it off. Please wait for 10 seconds now.
3. Plug In Battery
Plug in the battery again and connect it with the device. The connector only fits in one orientation for reverse battery protection.
4. Put the Cap Back On
Position the tool on the back of the knob as shown in the picture. Now, gently put the cap back on. The cap can only be put on in one specific orientation. Take a look at the two notches at the top and the bottom inside of the cap, that mark the middle position. They also have a different width and will only allow the cap to go onto the knob in the proper position. Be careful!
5. Latch the Cap
Latch the cap by using the tool as shown in the picture above. Again, make sure that everything works as desired by presenting an authorised transponder or smartphone.