A/C on max will typically make steaming worseFlyingwilko wrote: ↑Wed Jan 13, 2021 7:22 amGreat 1.5 hour drive to work today with my #jaguar #ipace completely fogged up. Despite being preconditioned and A/C on max the whole way it never cleared.
When you put on max heat or cooling most cars will switch to fully recycling air and not let in new fresh air just blow about the old cabin air. Thus gets increasingly moist due to occupants breathing.
There is typically only 2 reasons for excessive steaming like this a cabin filter needing replacement or excessive recycle of cabin air. The latter is user controlled.