What could be the issue if my 2007 S80 3.2 has a fully charged battery but won't start?

What could be the issue if the loudspeaker in the S80 isn't working?

What could be the issue if my 2007 S80 3.2 has a fully charged battery but won't start?

The auto start-stop function on my 2020 model 280 Comfort version has been inactive for a month. No matter how I park, it won't activate. What could be the issue?

My car has a weird problem. Sometimes it takes two tries to start. What could be the issue?

Is there anything other than a battery issue that could cause the auto start-stop to show the battery not fully charged on a three-year-old car?

What could be the issue with the electric sliding door of my Volkswagen Sharan not fully opening or closing?

The car doors won't open, and there's no response inside. What's going on? The battery seems to be charged.

The engine won't start, and the EPC, battery, and engine fault lights on the dashboard are all on. What could be the reason?

The car won't start, and the EPC, battery, engine, and malfunction indicator lights are all on. What could be the reason?

Even with the clutch fully pressed, the car still won't start.