Maintenance Schedule Model X, even if charging is not in progress. Warning: Keep your hands and clothing away from cooling fans. Some fans operate even when Model X is powered off. Warning: Some fluids (battery acid, Battery coolant, brake fluid, windshield washer additives, etc.) used in vehicles are poisonous and should not be inhaled, swallowed, or brought into contact with open wounds. For your safety, always read and follow instructions printed on fluid containers. 182 Model X Owner's Manual