Audi A5 Forum & Audi S5 Forum banner

air conditioner

  1. AC very loud noise from engine bay

    A5 & S5 Topics
    Hi Guys, new to this forum. I've had my A5 for nearly a year now and I'm very sure it never used to be this loud outside of the car when my AC is on. I noticed recently that when I have my windows down, if the ac is on I can hear a loud humming noise from the engine bay (no matter how high the...
  2. Hushing sound from the AC at low fan

    A5 General Q&A
    Hey All, Now...when i put the air conditioner on low (1, 2 or 3) i hear this low humming/hushing sound from the vent...its not much, but it seems like a change in the gas pressure, when i talked to the audi dealer he told me this "basically theres a small radiator like behind the vent where it...
Top