Abs, brake and oil lights come on at the same time and rpm gauge stops working, why does this happen after 15 minutes of driving

You need to find out why you have low oil pressure. It is normal that as engine rpm's increase, the oil pressure will rise- the oil pump is moving oil faster. Even though your light goes out, you could still have critically low oil pressure. There should be sufficient pressure at idle to keep the light off. The light will come on when your oil pressure is almost nil- I believe for some it's as low as 8 psi. Normally, oil pressure at idle is specified anywhere from 15 to 40 psi. You would have to check specifications for your Expedition. To verify oil pressure, hook up a mechanical gauge at the oil pressure sending unit on the engine block. Check with a local shop.

The causes run from easy, simple to budget busting ruin. Low oil level, wrong grade oil, real old oil, oil leaks, internal oil leaks, worn oil pump, worn crankshaft bearings. It was pretty common on older very high mileage cars to have a fluttering oil light at stops and idle. It was time for a rebuild, or time to look for another car.

That's still under warranty, is it not? Take it to the dealer - let the manufacturer pay for the fix.

Maybe your car got fault codes. You can use obd2 code scanner to read out the codes or use airbag reset tool to check.

replace eletric part of ignition shorting out differnt circits at diiffernt times

ok your problem is with the wheel the wheel speed sensor is reading a different speed prolly 1-2 mph difference so the dump valve in the abs is triggering i would change that wheel fast or youll be putting brake pads/shoes on that side very quickly. once you change the wheel pull the abs fuses or battery cable for 5 minutes then you should be good to go.as far as the spongyness pedal it will go away soon as the wheel is changed. if you still have the abs and brake light on you will need to pull some codes for us to help you some more.you 15" wheel is spinning faster then the 16" wheel the faster you go the bigger the difference will be between the 2.hope to hear good new back from ya.

Im been having same problem. So far it since to be ABS Module. I will recommend to have reading of ABS with a code reader with abs reader. regular code reader wont work. In my case i need to replace ABS module, but maybe in your case could be a wheel sensor, a cable, rotor,etc. If you need an abs module best thing to do fix it with http://www.modulemaster.com/en/services/abs.php. dealer price is $1400 and so it's either dealer, junker (EOM PART USED) or repair.
Good luck!

try putting water in it

Just a idea. If the car is running at idle and the oil light blinks , it usually from low oil pressure. At a idle your seeing the light respond to the revolutions of the engine. ! thing to try is to replace the oil pressure switch on the engine block. And #2, Most causes in a VW is that the vehicle overheated at one time and weekend the oil pump,or massive amount of miles.

it might be a fuse under the hood or fuse panel or connection to the gauges them selves

It is your battery. Replace it and you will be good as new.
It has happened to me 2x now.