Inconsistent dead battery
Every few weeks, I find my 190 with a flat dead battery! I had the alternator and barttery checked and both appear to be fine. I can not get the cause of the mysterious dead battery. This is the same car that for no reason threw a straight baar code on the radio and the radio stopped working. Otherwise, the car runs beautifully. The steering seems to have excessive play in it. I was told to adjust to adjust the steering play on the top of the steering box and that the adjustor adjust up rather than down when the lock nut is open. Aany thoughts? My manual and tech book c=does not address these problems.
Thank you for your time and assistance.