Hello,

Basically my car sometimes won't start, to be more specific the starter does only one full crank and then stops, after which I'm forced to turn off ignition and try again.. I want to make very clear that the car DOES NOT keep cranking instead stops and, for whatever reason, after a few tries it cranks normally and starts the engine. 

Car is 280.000 kms, so not exactly new and also very recently got a new battery (if I'm not mistaking is even bigger in AH than what's supposed to be OEM)

My basic idea is that the brushes on the starter motor are worn and perhaps don't do what they're supposed to do anymore and, to add more details, this happens more often when outside is cold/damp (though I'm not saying that when it's hot and dry this doesn't happen, just way less often)

I should have a video from inside the car somewhere that now I can't find but It's legit only the starter making ONE crank then stopping suddendly

thanks in advance for the attention.

Ps. When the car is warm this never happens

It might be lack of a timing signal from the crank sensor leading to the PCM believing the engine is locked up and so disabling the starter to prevent damage. 

Sounds like a basic wiring problem. It could be an ignition switch or button going bad or it could be an issue with the wiring to the starter. It’s all very easy to test with a basic test lamp.