Hello,

Recently I was using my family's S class and it is doing some weird things.
1. When I turn it on, the speedometer stays at 160 MPH and the miles of the car just keep increasing (the main mileage counter and the other one that is resettable).
2. All the warning lights are on.
3. It keeps saying that the ESC and the ABS is not working.
4. The Navigation would be stuck in a "loop" like it'll look like I'm moving the thing up and it'll go back to where it was without me touching it.
5. It doesn't happen every time I start it.

Anyone have any idea what is happening? I am thinking the main computer system for the car might be broken or something but I have no idea. Any help is appreciated.

Have your battery load tested

If battery ok it is possible that a ground has gone missing

Thanks ill have that looked at and would you know if it would be expensive to fix?