The reasons for the Xiaomi Robot Vacuum E5 failing to return to the charging dock are as follows:
1. There are too many obstacles near the charging dock. Please place the charging dock in an open area, ensuring there are no obstacles within 0.5 meters on both sides and 1.5 meters in front;
2. The robot does not start cleaning from the charging dock, or it does not detect the charging dock during cleaning. Please try to ensure that the robot starts cleaning from the charging dock;
3. The robot is moved during the cleaning process;
4. There is water accumulation on the charging dock or the ground in front of it, causing the wheels to slip. Please dry it before trying again.