I have the 04 SL. I hear a swishing sound when the air conditioning is on. When it is not running I hear no sound. The dealership flushed the coolant and it was better for a short time. On a related issue I had the right headlamp short out. The dealer replaced the headlamp assembly but could not find a problem with the cooling system. Does any one have any ideas? I would not want my cooling system to seize up. The dealership seems nice but they are not able to help.

Any suggestions would be appreciated. I tried to search the site but that feature is turned off.

Thanks, Gldman

 

There's a TSB on this...

http://maxima.theowensfamily.com/tsb/NTB03-072.pdf

Good luck

 

Thank you.