Hey my fellow E60 bimmers..... Let me pay hommage to the most beautiful 5 series BMW ever made, the E60.

Now back to my problem, so long story short, I got my mechanic to flush out the sludge from the coolant system including the radiator and bought new oil cooler as well as the service kit to do everything one time. However we encounted a problem after while my mechanic was using the hosepipe to flush the coolant through the bottle and the car idling..... Me (thinking I know it all because of YouTube videos and forums) went to switch on the aircon on max for both driver and passenger sides..... Immediately after doing that, the car went into stall mode and after I tried starting it again, just cranked and cranked. FYI there is a half tank of petrol and spark. So please can I knowledgeable person explain to me why the car went into stall mode after maxing out the AC while it was idling and why doesnt it want to start anymore but it cranks.

 

Did your mechanic check the codes. I'm sure it's telling you why. With your explanation of what happened there's no rhyme or reason so the codes will have to be read

 

The code scanner said intake camshaft sensor and exhaust camshaft sensor

 

The car can't run on fault cam sensors so that would be the reason it died and will not start anymore. Now you have to figure out why both triggered fault at the same time. Since you didn't post the fault I can't advise any further. I'd advise you to go see a better mechanic also. This is 101 with those faults