Power mobility scooters definitely should not be ridden i the rain or allowed to get wet. Rain puddles, etc., are not good for the controller, motor or gear box and repair would not be covered by the warranty.
If your scooter should get wet and stop working, it might be able to be restored to proper operation by letting it completely dry out. Park the scooter indoors for a few days or a week where it's air conditioned and the humidity is lower.
If that doesn't solve your problem, please email or call our technical support team for further diagnosis and repair.