I took my 2012 Mercedes Sprinter to Neece Tire and Auto Service, Tallahassee, FL to have an internal tire pressure monitoring system (TPMS) installed. Short story: They sent us away with 4 tires leaking!
Long story: They needed to take off each tire, deflate, push down the tire, remove the valve stem, and install a new metal valve stem that holds the TPMS electronic module inside the tire. I expected this to be a routine installation, but it was taking over 5 hours and the service advisor did not tell me of problems while I waited. When I finally ventured past the “No customers beyond this point” sign to see what the mechanic was doing, I found he was very upset and frustrated saying that on every tire he installed the components as provided, then it leaked so he had to take it apart and substitute different parts. The nut would not fit on the valve stem so he was putting on a smaller nut that was very hard to tighten.
Then they told us they all installed successfully so we paid and left, only to find that they had over-pressured all the tires and most were leaking. We called the company that sold the TPMS and it turns out they had supplied us with the wrong parts.
In the morning I added air and headed back to Neece Tire and Auto Service and asked for the person in charge. Mr. Neece was very defensive and after a few minutes that seemed an eternity I was able to get some words in to tell him that we now realize that the parts we provided from TST were not the right ones. But why did they install them anyway when they all leaked? He said that they did not leak when we left and the pressures were so high because the gauge was defective. I had no way to prove he was wrong at the time, but later we overheard the mechanic say to a foreman that they were indeed leaking after he finished installing them. Mr. Neece said that they would put back regular rubber valve stems, give us back all our parts, and charge us $15 per tire for that work. I explained that I would report all this on the forums and he didn’t care. In the end the service manager did not charge us for removing the TPMS, but a refund of the original $160 was out of the question. Not to mention our time of about 12 hours counting the drive back. I will never return to that place.