Lexus IS Forum banner

1 - 5 of 5 Posts

·
Registered
Joined
·
191 Posts
Discussion Starter #1
I sometimes hear a vacuum/ sucking noise when I turn the AC (air cond.) ON right after I start the engine on hot temperature days.
Is it normal though?
I was going to check it with the dealer, but I could not reproduce them.
Thanks a lot.
 

·
Registered
Joined
·
1,798 Posts
IS300SD said:
I sometimes hear a vacuum/ sucking noise when I turn the AC (air cond.) ON right after I start the engine on hot temperature days.
Is it normal though?
I was going to check it with the dealer, but I could not reproduce them.
Thanks a lot.
Do you mean like a faint whistling sound? If so, than I think it is normal.
 

·
Registered
Joined
·
1 Posts
That is the A/C system switching the flap that brings outside air in to re-circulate. When the car first starts on a hot day it will do that to help cool off the air inside the car faster. Hit the outside/recirculate button and you should hear that same sound.
 
1 - 5 of 5 Posts
Top