1. Have you already checked the fuse on the electric block below the driver's seat?
2. Is the switch for the water pump on the control panel in the entrance area of the vehicle switched on?
3. Have you been able to check the water level?
If there is not enough water, the water pump runs hot.
4. If your water pump still does not work, please contact a Bürstner partner near you to analyse and repair the error.