My 2005 X5 4.4 is possessed, please help!

[pghguy517]

2005 X5 with 209,000 miles, I get random dash lights and codes that come and go, sometimes the wipers and radio won't work, seat belt alert chimes with seat belts buckled, brake lights stay on. Sometimes no issues and all works fine. I recently had an old battery fail, replaced it twice in a month with a Costco 900 CCA Interstate battery that were both good, replaced the alternator both were tested as good and charge at 14.2V. Replaced the brake light switch, still same issues. Replaced the Steering angle sensor and calibrated it several months ago before all this started. With new battery, car always starts and runs like it should. Codes I get are P0461, 2DB4, 2F62, and 2A1D. I clear them and they come back, may be other codes that come and go. Dash lights that come and go, and are not consistent are yellow brake light, air bag (sometimes it's dim), seat belt (even though its buckled), trans failsafe prog, and 4x4. Any ideas? Thanks!