Hey guys. My car is A4 2016 2.0tdi 140kw. Ive got a problem. I turn on ignition and i get all sorts of problems, traction control problem, tyre pressure problem, safety system problem, drive system fault, engine check etc. Then i turn it on, car goes on limp mode says drive system fault. I figured battery, but i turned on scan tool and it says that voltage is OK. But I dont know if u can trust scan tool with battery. Anyways when i scanned the car i got fault on Turbo Boost Sensor. Can that be the problem or should i check the battery first? Thanks guys.