New owner! Big problems.....

[Stockx5]

I have x5d 2010 with 103k miles
possible cause for your scr failure is a faulty thermostat, if you have not had the thermostat replaced already then it's almost 100% certain the thermostat is faulty not allowing engine to reach operating temperature. this can likely cause your cat to fail prematurely.

checking your engine temperature is easy and free you can read about the issue and how to do it on this thread.
https://xoutpost.com/bmw-sav-forums/...-diy-pics.html

My x5 had multiple components replaced glow plugs no2 sensors etc yet dealer never figured out the thermostat was bad since it did not trigger a check engine light.