I have a burning smell in my 2005 infinity G35 when heat is on... do you know what might be the problem?

SOURCE: 2003 Infiniti G35 Starter location

Downloaded a PDF detailed service manual online. Gives you diagram and everything else you need.

SOURCE: INFINITY G35 FUSE DIAGRAM

there is an ipd/m fuse box behind the battery of my 2004 infiniti g35 sedan. I blew a fuse and couldn't find it. So remove the plastic panel that is right next to the windshield washers when the hood is open. You'll see an entirely new fuse box. So all in all, there are three fuse boxes... one by your feet on the driver's side, one in front of the battery, and one behind the battery. hope it helps

SOURCE: Tire pressure light is on

You cannot reset them,Make sure that you check the pressures in the tires. The Infiniti Tire Pressure Monitoring System is designed to trip the warning light anytime the pressure in any of the tires drops below 29 psi. At 29 psi it really won't look like the tires are low. You could have one tire at 29 or 28 causing the light to stay on all the time. Check your pressures, set at 34 or 35 to be safe, or whatever pressure the tire is recommended to be. Not all infiniti vehicles with TPMS have the display that shows the pressure in each tire. If the pressures are above 29 psi, Then there could be an issue with one or more of the sensors. If you have the tires replaced you will have to have the sensors relearned at the dealer. Tire rotations do not require the same. 

SOURCE: Service engine soon light

in your manual inside your glove box it will tell you how to restet the service due soon message, or the mechanic should do it when he/she services your car.

SOURCE: 2005 infiniti G35 coupe how to reset the service

You cannot reset the light, some people think that by disconnecting the battery you reset the ECM, as that may work on Fords or Chevy, it doesn't work on Infinitis. If the engine light came on because of a loose or missing gas cap, then once the cap is tightened past three clicks, the light will go off on its own. You are going to have to take it to either AutoZone, a dealership or to an independent shop and have the Consult II diagnostic computer retrieve and clear the stored codes. AutoZone does this for free. That's where I suggest you start.