2004 BMW 545i e60 with magnaflow exhuast 3 inch

[3131561]

What Did you Do? , it is a completely wrong!! its cold !! , 1st u have to start up engine , leave it for 3 mints at least , and after u can start warming up gradually

2nd , u switched off the engine in less Than 30 seconds , in this case, part of engine is hot and another is not yet !!!,

3rd you are confusing the electrical circle , electronic sensors , engine chip !!

I think u also after u come back from any where driving , u just turn off engine immediately right?