Uldis

From or back tyres

Could or hot. Check a oil level first. And then you done last service. I know same service change just oil but not filter.

20min minimum like that

Option. In my a8 working. If dpf full. Go on m25 or m1 .automat put on sport and hold 2000 .and work. Smell not nice but burn out all !Removed! from dpf .but be sure that you have system of byself cleaning

Dpf is full . Automatically or mechanical gear box

I'm be recommended original find out.

Or can be pipe connection coming out.

Check a oil level .if gaset broken is 2 option. Go in engine or out.

Door locking and unlocking problem Then I look a car 3 door locking and can't After open from outside. Passengers door all time open.