How to jump start 2008 infiniti g35 keyless ignition with a dead battery?

Question moved to model category.

When you disconnect connectors under the dash, you are likely to cause issues with the anti theft system, when you disconnect the battery, you DEFINITELY do. Now you need to reset the security system. Is the anti theft light on solid?

https://www.google.com/search?q=2005+infiniti+g35+reset+security+system



Or you get an auto electrician to diagnose with a professional grade scan tool computer.

https://www.google.com/search?q=auto+electrician+near+me

..

Is the security light on while the engine spins over? If so, reprogram key.

if you have start buton you dont need to put the key on the ignition

Remove the key blade from the transmitter and you will see two small slots on either side. Use a small flat blade screw drive to carefully pry open the transmitter.

it can be the electrical part of the ignition switch .that is sticking.

should call a dealer for the information

You can not jump a dead battery

That is also an unsafe practice

Have to disconnect any battery that is
dead & try to charge it first or replace,
if it is over 4 to 5 years old & died

When left unused for a long time the grease inside the tumblers starts to act like a gum. Try spraying a releasing oil/penetrating fluid or anti rust agent such as Q20/Tool-in-a-can into the keyhole. Just spray and leave for 5 minutes. Available at your local hardware/Autozone/spares shop.

junk yard

Have your consulted your owner manual for instructions on how to do this? On some models you need to turn the ignition on (without starting) and then pump the accelerator peddle three times within 5 seconds.