Is this normal?

[jgarcia]

I have an '04 limited with the JBL factory audio. while listening to the radio and driving at a moderate speed with the two rear windows down, the sound becomes very annoying, echoing and vibrating. Has anybody also experienced this? thanx

 

[josh220]

Go through the settings and try toning down the bass, or turning off the surround sound option. Also, you can disconnect the center speaker on top of the dash for a less harsh sound.

And you are referring to something caused by the JBL and not the loud thumping vibration noises caused when you roll one window down at a time right?

 

[simple]

I made a thread on this awhile ago. The consensus was; your 4runner is broken. Kidding. Something about aerodynamics. I don't have JBL and I get it too. Lots of people did.

 

[Pdl Pwr Girl]

I don't have a JBL system and I get a similar vibration when I open my sun roof all the way. When I stop it 2 inches short of all the way the noise goes away completely. I think we're talking about the same annoying thing but could be wrong.