2007 G35x Sedan. I can't force the A/C to come on before the engine gets warmed up anymore. Previously I was able to turn off "Auto" and bump off the fan and it would come on. But, now it won't. I believe this all started when I replaced a dead battery. Is there something that needs to be reset? I did reset my windows after the battery change to get them to automatically go up with one press. Thanks!

 

I don't know of anything to reset or any interlocks for this. I've pulled the battery a few times and haven't had this happen. Sounds like something is degraded but i have a hard time figuring what it would be.

 

Ok, thanks for the feedback! I may have to end up taking it to the dealership to see if they can figure it out.

 

go to NICO.com and read the FSM for your G before heading to a dealer

 

I looked all over for an FSM online and couldn't find one. Is NICO.com the correct address? that redirects to "The Lindgren group"?

 

sorry its nicoclub.com

 

Got it, thanks!

 

I would suggest looking at the the Blower Motor Relay.
It is located behind the fuse panel on the Kick panel to the left of the brake pedal.

I just replaced mine for what sounds like the same issue - It cost me about 33 dollars and a half hour of my time.