Whistling sounds with AC on

[Kris@modmynav]

Hello Guys,

just want to check if it's ok or not
I only here whistling sounds when I push the accelerator pedal with AC on.
doesn't matter if I turn on the AC all the way up to max or min.
sounds like air suction, almost same as my 325ci with aftermarket intake.
is this a normal sound? or I have some problem?
btw, I have 2005 X5 4.4i

Thank you!

[Sterling 4.4]

Which vents do you hear the whistle out of? Mine seems to whistle out of vents above the NAV Display

[Kris@modmynav]

Originally Posted by Sterling 4.4

Which vents do you hear the whistle out of? Mine seems to whistle out of vents above the NAV Display

same as yours,
above the NAV screen.

[The Big Easy]

I posted on the windshield problem (loosening on top, losing contact with upper frame) and high pitched sound resulting at speeds >70 mph which would stop the moment you put some firm pressure on the inside of the uppermost part of the windshiled.

Don`t know is this might help?

Cheers,