Technical Power Steering and ESC Issue

[lewispunto15]

Hi guys. I have a 2015 Fiat punto pop 1.2L. Battery has been changed. Over the past year I have issues with the power steering and the ESC.
Firstly the majority of the time when I press my brake, the ESC becomes unavailable (warning light comes on) and then when I press my brake again it activates again. This happens repeatedly but sometimes it doesn’t happen and sometimes it stays on throughout the journey.
Another issue I have is when it’s been cold (4 degrees and below) when I start the car, the power steering warning light comes on along with the ESC being unavailable. The power steering is also heavy. What I have been doing is letting the engine warm up, turning the car off and moving the steering wheel and restarting the car. After a couple of attempts doing this and restarting the car, the fault disappears.
Any advice on what the faults could be?

 

[GrandePunto PL]

0. You've started 2 threads (different titles, but same content), erase one, now.
1. SEARCH. Multiple existing threads about power steering cutting off etc.
2. Basics to rule out: alternator, battery, main ground/earth leads.
3. Only then you can mess with the steering (sensors, column).