The battery isn't seated or the main fuse is blown.
- Push the battery release button and remove the battery, then reinstall it firmly.
- Check the 4908 Fuse PCBA (part number 2830216002). If the fuse is blown, replace it.
If that didn't work, inspect the internal wire assembly (part number 4860616001) and the wiring harness (part number 4860570002) for damage or disconnection.
Heads up: Always ensure the battery is fully inserted and locked before attempting to start. A loose connection is the most common cause.