>Arakhoper

It sounds like at least some of your problems are due to the recent work you performed or had done at your local shop. You just replace the horns...and they don't work. You just took apart the steering column, and the airbag light is on and the rear wiper and steering wheel controls won't work. Are you sure you're not out of your depth working on this car?

X5's can be VERY tricky cars to work on, especially if you're new to BMWs. Anything electrical can be diabolically difficult to work on, and many jobs involving electrical components are impossible to diagnose or put right without a dealer level scan tool.

There are a LOT of jobs a non-technician owner can do, especially with the help of the tutorials found on this site, TIS, and Bentley manual. But it's certainly possible to foul things up if you're not careful.

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2014 BMW 328i Xdrive
2011 BMW 335i M-Sport
2008 BMW X5 4.8i Sport
2000 BMW 528i 5sp