where/how do i check my automatic transmission fluid levelon my 2009 G37x Sedan?

 

Welcome to the site
It's a sealed unit and is best left to the dealer regarding changing the fluid.
Differing opinions around here as to when it should be flushed, some say at 50k, others at 100k, and others say never. FWIW I'm having mine done at 75k, it's about $200 or a little less at the dealer.

 

Got mine done for about $150.00 at the dealership. Like blnewt said, it's best left to the dealer.

Just FYI, be sure you are getting them to flush the trans fluid. Check paperwork there are two differences in wording. You will know that they flushed the system when it says "flush and top off." It will not be flushed if you see the words "drained" and top off.

 

Thanks for that clarification. My 09 G37xS is almost at 100k. Time for plugs and thinking about having the trans fluid flushed as well.

 

I would do it. I don't believe in trans fluid that is good for the life of the transmission
going to have mine done soon and i'm at about 40,000 miles. I have heard that the nissan dealer will do it cheaper than at the infiniti dealer.

 

Good to know. Something to keep in mind when I'm ready for mine.