Where is the external circulation on the Audi A4L?

2 Answers
Matthew
08/30/25 7:45am
The Audi A4L does not have an external circulation button, and it automatically defaults to external circulation when no buttons are operated. Here are the relevant details: 1. Exterior: For the Audi A4L's exterior, the 35TFSI Progressive and 40TFSI Progressive models come standard with the S-line sports package from the previous model, with slight differences in the rear bumper and exhaust pipe details. 2. Upgrades: The new model features two additional USB ports across all variants and has upgraded air conditioning. Additionally, the prices of some models have seen minor fluctuations, but the value for money remains excellent given the added features. The new A4L 35TFSI Progressive continues to be powered by the EA211 1.4T engine, delivering 110kW (150PS), while the 40TFSI/45TFSI models maintain their power outputs at 139kW (190PS) and 185kW (252PS), respectively. All models are paired with a 7-speed DSG transmission, with the 45TFSI variant also featuring the exclusive quattro all-wheel-drive system.
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LauraLynn
09/12/25 4:41am
My old A4L has been running for five years. The external circulation button is most conveniently located on the center console's AC panel. Look for the car icon with an arrow inside - when the light is on, it indicates internal circulation; when off, it's external circulation. Never use external circulation in traffic jams, or you'll get all the exhaust fumes inside. On highways though, you should turn on external circulation for ventilation, otherwise prolonged driving gets stuffy and dizzy. Audi's AC system is quite sophisticated - when automatic AC is on, just press this button to toggle modes, very intuitive. If you can't find the button, simply tap the 'Air Circulation' icon on the center display to switch modes. Page 37 of the manual even has diagrams, though you'll memorize it after a few uses.
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