Hello, I drive a Hyundai IX20, Built 12.2016,Diesel, 1.6 liters, 116 hp, 109,000 km,Reimport from Belgium. After starting the engine it happens more and more often that when the wheels are hit the steering aid is not available. Bzw. that the impact is very difficult. I crank, drive at the same time backwards from the parking gap, after a few seconds the servo support goes again, the steering wheel can be easily rotated. What is the cause? What is going on gradually? Second question: I want to completely expand the back bench for transport tasks. I see the screw heads on the fittings on the floor sheet, but don’t dare to turn them out, it could sit on the bottom of the sheet nuts, which I can’t get to any more. Who knows a solution. Third question: Engine oil and filter change: all 15 or 30 tsd km ? TMAPU81SAHJ238900 MfG Motormazda