Problems with cold start

[Bobbybuilder]

Hello, I got a 1.4 TSI FR. For some reason when it did a cold start the revs were at 1.2-1.3K and the dropped to 700. Now it goes from 900-700. Do you know what the issue might be?

I was looking around and sources said it might be alternator, battery to which I checked and it’s not or fuel pump.

 

[SuperV8]

First thing I would do is scan it for fault codes.

 

[Bobbybuilder]

First thing I would do is scan it for fault codes.

I’ve scanned it. Only for codes coming it’s for the rear bass speaker, trunk handle and infotainment which I think it is cause of the Apple car play