Pressure wash should be used below knee level and NOTHING ABOVE ! Note, motor and dashboard is IP65 whereas battery is IP67.
First Digit in IP Rating
6: No ingress of dust; complete protection against contact (dust tight). A vacuum must be applied. Test duration of up to 8 hours based on airflow.
Second Digit in IP Rating
5: Water projected by a nozzle (6.3 mm) against enclosure from any direction shall have no harmful effects.
7: 1 m depth Ingress of water in harmful quantity shall not be possible when the enclosure is immersed in water under defined conditions of pressure and time (up to 1 m of submersion).