Battery drain from 2018 Mercedes Sprinter in Holiday Rambler RV
My engine battery drains to being unable to start in less than 2 days. My dealer
is telling me this occurs in an Mercedes Sprinters and that I need to disconnect
the battery with the disconnect next to the gas pedal whenever I turn off the
vehicle for longer than a day. Is what they are telling me correct?
I would expect that a Hyundai dealer might say this, but not a Mercedes dealer. Your car should not have any problems if left unrun for several days. If it's more than a week or so, you might want to buy a battery tender. But for two days unused, I would suspect the battery is weak or you have a parasitic draw on the electrical system and the dealer doesn't want to spend time to fix this under warranty.
Disconnect the battery longer than one day...that's baloney...Find another dealer. It's an RV, you should have a battery isolator, if it's working correctly this should not happen.
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