Timing Tensioner Problems of BMW 335

My name is don, and I took my BMW to one of portlands dealerships to get my car services. First two days were fine, then after that my passenger and driver air bag lights were constantly flashing on my warning notifications tab. I reached out to the dealership and they wanted me to come back. After I was done with them they charged me over $700 for inspecting the issues and problems reported, then quoted me over $4,000 worth of air bag replacements. The dealership cleared the codes before I left and declined their offer. I saw on kelly blue book that there were recalls on this model. At this time I'm hesitant to trust the dealership because last time I was there I was told I needed a new engine, worth over $26,000. The car is almost at 70,000 miles and I find that very hard to believe. I almost asked the technician if he would be willing to take a lie detector test on my expense. I understand that dealerships typically make more money in the service department than selling new and used cars. I was told by them there were no recalls on my car, but I do want to make a report. Not feeling comfortable to drive my car, I have been storing it in the garage and only using it very lightly. My engine issues started with a small ticking sound. The dealership of portland wanted me to replace tensioners and the timing belt, but the sound was coming from the fuel injectors, after that they wanted me to replace my whole engine. I have been misled by them multiple times. When I bought the car, my luck wasn't so great, after two weeks of purchasing it a small rock on the penetrated my window while I was on the highway. I got insure to cover it but they needed a quote from the dealership. I got 3 different quotes, all hundreds of dollars apart from $800-+$1,000. The reason why I am making this report is regarding my safety and concerns for these airbags, wanting to be assured safety.

See all problems of the 2013 BMW 335 🔎.