Surging and loud whistling noise

Please check the:
- Pull up error code, if any.
- Fuel system.
- Ignition system.
- Cooling system.

diesel engine --possible air in the fuel system
petrol engine check the fault codes

Have the battery and alt tested for free at the local parts store.
Tell them what it's doing, and start suspecting a fuel issue.
Could be getting the right amount of fuel but not burning it. (plugs, wires, coil)
Or could not be getting enough fuel.

Still hard to say, so get the charging/power system checked first.
Let me know what you find out as I'm real curious now.

Same happened to a friend and it was the fuel pump....
Same for another friend and it was 2 bad coil packs.

I will do some research on the headlight problem. An awd system should not bind in a turn like a 4wd does on dry pavement,because the awd has a limited slip differential. And any kind of noise coming from the rearend is NOT normal. You should report the dealership employee that told you this to the factory regional representative. It borders on gross negligence.

TRansmission went on the car you may have to buy a new transmission

I think you should check your battery and alternator.If they both check good you may have a battery draw,something draining the battery over night.Check your doors make sure they are closing like they should.

If fuel filter hasn't been done lately I would start there & if you can, have fuel pressure tested while your at it. You may have tired fuel pump but pressure test will confirm. If you recently filled up somewhere different last time you got gas, I'd also try some "Heet" or similar just incase you got a tank full with some water in it.

try and look at the belts, if they are wore out replace them

Put some water in the plastic reservoir for the coolant. See if it leaks out. Please post your results.

this engine fuel pump prassurae low. it fuel pump celan. Your problem sovel