Thank you for the response. The scooter has now been to the BMW Dealership three times. They claim to have done the following: check that the fan kicks in properly, updated the software, checked the strainers, replaced the temperature sensor, checked that the radiator is clean, checked the radiator cap and thermostat. The red warning light is still coming on at speeds above 120 kph. It resets when speed is reduced. For now it looks like we are out of options.The OP does not appear to have been back since posting. Have you tried some of the above...cleaning radiator...fuse check...fan check? I have not had the issue but this is where I would start.