Or more likely jsut a tire is low... My TPMS come on as soon as a rear tire goes even just a little below 36 psi.
When I went to purchase my Scion iQ to replace my totaled Smart I brought a tire gauge and hand pump to adjust the tire pressures before the 400 mi trip home. When we completed the deal I adjusted the pressures and the guy kindly offered to lend his air tank/compressor but it's was quick for me. If I go, I'll ask about the tires first thing if they don't mind me checking, then reset the system per instructions....
If you like it like that don't reset the system. I don't blame you if you do it's set too low percentage wise from correct pressure.
There are these PPI companies that send out a mechanic to inspect the cars. Search online and find one that can do a proper battery check. I don't have a Mercedes Star Clone sadly not Jim's battery tester...
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