The A/C Switch for the BMW 640i xDrive Gran Turismo guarantees instant control of the cabin atmosphere in all conditions. A crisp on or off message is sent that calls forth satisfying coolness or warmth. With a reputation for reliability, it is a solid, time-tested circuit that delivers command without lag or false feedback. The A/C Switch functions with internal relays so that the climate loop is only closed when required, preventing fuel wastage and maintaining the BMW driving experience. The A/C Switch plugs right into the factory harness on an early 640i xDrive Gran Turismo with tactile push buttons or a later 640i xDrive Gran Turismo with a touch surface, making it cross-year compatible. Every BMW in the series relies on the A/C Switch to activate the intelligent blower motor power module, which offers a virtually endless range of fan steps to ensure constant comfort. The A/C Switch contributes to safety by preventing fogged-up glass and sudden temperature changes in the passenger compartment during rain or frost. The A/C Switch's light electrical demand allows the turbocharged inline six to focus all of its resources on acceleration, aiding the 640i xDrive Gran Turismo's quick sprint times without parasitic loss. The BMW climate interface still registers every tap of the A/C Switch even after traveling thousands of miles, courtesy of long-term evaluations. The xDrive control unit in the 640i xDrive Gran Turismo lets airflow be balanced across the large liftback, so it remains an all-season grand tourer. This BMW A/C Switch part is selected by drivers looking for authentic parts as it matches every spec sheet of a 640i xDrive Gran Turismo and upholds the traditional responsive nature of BMW on hot highways or chilly dawn commutes.
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