Where is radiator fan switch on 1991 Mercedes-Benz 190e?

On a 1991 Mercedes-Benz 190E, the radiator fan switch is typically located on the thermostat housing or the radiator itself, depending on the specific model and configuration. It is usually a cylindrical component with electrical connections. To access it, you may need to remove some components around the engine bay for better visibility. Always refer to the vehicle's service manual for precise locations and instructions.