Is that the same place that diagnosed the alternator? Like Jim said, a bad switch that stays in the accessory position could kill your battery overnight, but won't prevent the battery from charging normally with the engine running. 13-14V with the engine running and less than 12.6 with the ignition off means a parasitic loss like leaving accessories on with the key out. Less than 13V (should be about 13.4V with a factory voltage regulator) with the engine running means the battery is dead flat or the alternator can't keep up with the load. Mitch.
> On January 16, 2019 at 6:01 PM Patrick Atuonah via Mercedes > <mercedes@okiebenz.com> wrote: > > > The glow plugs relay doesn't have a strip fuse. I have done all battery > tests. The new battery in the car is an interesting battery. Brand new yet > it is drained after a week's installation. That's why I took it to a > Mercedes-Benz of silver spring (MD) dealership. That's where they diagnosed > ignition swotch ad the issue. > Thanks every one. _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
