Hello! This is my 1st Help! Post here, I have a 2005 Infiniti G35 that will not start, typically when it it colder outside.
Heres what happens,
I put the key in ignition to start engine, turn key to 'ON' and VDC OFF, SLIP, and BRAKE, Oil, and Battery lights come on (Ive enclosed a picture). In addition to these lights, the radiator fan comes on as well. When turning the key to start, the car will try to turn over, but not successfuly start.
Heres what I have tried,
-Fill brake fluid
-Replace CamShaft Position Sensors(both bank 1 and bank 2)
-Check brake pads
-Cleaned/Secured ground connections
-Checked oil

The only thing Ive heard that I should try is replacing the coolant sensor? One of my mechanic friends suggested this because of the radiator fan on?

Lastly! This only happens when its cold outside/morning time? If i wait untill ~12:00 after the sun has rose, the car starts fine. No lights, no nothing.

Any help would be awesome!

 

You sure its the radiator fan thats on and not the ABS motor running?

 

Definitly the radiator fan, I assume trying to cool something?

 

Crank sensor

 

Check the battery u had the same problem had to buy a ac Delco 2 weeks ago works great

 

Usually, if the engine is NOT running, a whole bunch of warning lights come on when you turn the key to ON. most disappear.

So, if you turn the key to ON and wait a min, what warning lights stay?

 

i ended up having to replace my ECU and battery when i had this. this might not be your problem and nissan might have ****ed me just because they can. i also had to replaced my camshaft sensors myself with aftermarket ones but that was not the problem.

start with the battery. see if its very old and need a new one. if it is, change it.

if the problem is still happening, scan the vehicle for any codes and go from there.

 

have you checked if there are any codes stored in the ECM after the car starts?