Newb here with my first post and some?'s / Need advice

[Asudevil]

Hello all! I recently (last Saturday) purchased my first E70, an 09’ X5 4.8i with 96k+ on the odometer for my wife that is expecting our first child. My wife and I are VERY excited about it, however it’s been a bummer that I haven’t been able to play around with it very much because I haven’t received it back from a Houston area BMW dealership that I demanded work on it due to the fact that I was only willing to purchase the vehicle from my local GMC dealership if they allowed me to take it home Friday night and go over it with a fine tooth comb to make sure that I wasn’t being rushed into purchasing a lemon. I’m sure you all understand. We've had family members that’ve owned X5's and they advised us what to look out for which was a tremendous help. The main reason I requested the dealership to work with me on this deal was because out of the few things we initially noticed at the dealership Friday night before we even test drove the SUV was that the lift gate in the rear of the vehicle did not open automatically, which I thought it should (due to comments I’ve seen on forums/online) with the push of a button using the key itself or a button that is located on the bottom of the truck lid when opened. I also believe there is a button on the dash of the interior that is supposed to automatically open the trunk hands free. Please correct me if I’m wrong, but from my understanding this option was incorporated into all X5's beginning in 2007 from what I've researched. Also, I noticed the video/navigation screen on the dash was showing the Passenger Restraint System error message, so I wasn't sure if that was an electrical problem or what. Next, once we started driving an indicator light continued to keep popping up regarding low tire pressure on the right rear which ended up being a bad TPMS sensor according to the general manager of the GMC dealership. On top of all of those problems, Saturday while I was at work my wife pulled the X5 out of our garage to find some fresh new oil leaks that were never there until we parked it in that location. This problem was “supposedly” diagnosed by the GMC service manager once we brought it to their attention Saturday evening when I got off of work. He claims that the oil valve wasn’t tightened properly when they serviced the vehicle there at the GMC service shop when they initially received the trade-in. As minor as the next problem was, there was a grasshopper/bug in the passenger headlight that was promised to be removed due to my wife freaking out over that. So the main concerns of ours are: 1st the oil leak, 2nd the automatic lift gate problems, 3rd the passenger side airbag issue, 5th the headlight, and last but not least, I figured the vehicle needs to be properly serviced and gone through by BMW because on the dash in between the speedo and the tach there is an indicator that stays on. It’s in the shape of a triangle with and exclamation mark (similar to the hazard light button on the dash). If any of you e70 fanatics/enthusiasts can please weigh in on these issues that I’ve noticed and have any ideas, thoughts, or opinions it would be INCREDIBLY HELPFUL and APPRECIATED by my family and myself. I’ve always loved the E70’s but the reason I wanted one was because I need my wife and newborn to be in the safest and hopefully most reliable SUV that I could afford to put them in. Once we get past these issues I want to start adding some tasteful mods but I will save those for another post. Thank you all for taking your time to read my lengthy post and I look extremely forward to hearing back any input that you may have. Have a great day!!