i own a g35s (manuel if that matters).

Every time i start my car from a cold start the car starts. however whenever i try to start the car while the engine is still warm the engine doesnt wanna turn over, all the lights on my dash and interior turn as well as the headlights and tail lights.
any idea as to why this is happening ( my battery was replaced not too long ago, and my key fod is a little bit old however the car still reads it).

 

What happens when you turn the key, car cranks strong but doesnt fire? Car cranks weak? No crank at all, if so does it click? How long does it take to start when cold? Do you have any check engine codes? What year / how many miles?

Read though any of the threads listed here.

 

Sounds like a bad starter solenoid, fail to start when hot issued are usually that. Hard to bench test because by the time you get it off it's cooled down enough and starts again.

 

Are you getting spark?
Have you checked for fuel pump pressure
Have you tested your battery, cables, tightness of battery posts, ground connections?
Clutch interlock switch?

If you are saying the starter will not operate there are a couple of starter relays in the IPDM
Test them

Telcoman