What causes a battery to discharge after 3 days?
A bad battery can not hold a charge, and that may be causing the discharge in 3 days or so, or it could be a parasitic drain. Or a short in the wiring somewhere. You can get a meter for $5 and check every circuit.
Why is the battery draining on my Mercedes medic?
If the car is left parked in high pedestrian traffic areas this could be a problem. It may cause the battery to drain within a couple of days in some models. Try to turn off the proximity key function in your car by looking up the instructions on the owner’s manual.
What should I do if my car battery is draining?
Remove the key from the ignition and let the car sit for at least 15 minutes. In some models you may need to wait up to 30 minutes for all the electronic systems to go “to sleep”. This will allow the car to shut off any electronic consumers that stay on for a brief period after the car is parked.
Can a bad battery cause a light to go out?
And if the lights and other things are out, there is a blown fuse somewhere, or several. A bad battery can not hold a charge, and that may be causing the discharge in 3 days or so, or it could be a parasitic drain. Or a short in the wiring somewhere. RandomTroll August 5, 2018, 2:51pm #7 You can get a meter for $5 and check every circuit.
What causes battery to drain after 2 days?
As far as how much of a draw will drag your battery down, depends on how good your battery is. As little as 1/4-1/2 amp draw will drain a marginal battery. If it turns out that you have zero/no draw, then this could just be a poor battery that won’t hold a charge more than a couple days.
Why does my Mercedes-Benz battery keep draining?
You try to start your Mercedes-Benz and the car is either completely dead or this happens: Battery drains happen when electronic equipment (consumer units) are constantly drawing current from the battery while the car is parked. One simple example is when lights are left on overnight. But it’s not always as simple as that.
Remove the key from the ignition and let the car sit for at least 15 minutes. In some models you may need to wait up to 30 minutes for all the electronic systems to go “to sleep”. This will allow the car to shut off any electronic consumers that stay on for a brief period after the car is parked.
When to disconnect battery from parasitic drain?
If you’re too busy during the workweek and can’t get to it until you’re off, some short term fixes are to disconnect the battery at night, and carry a portable jump starter in your vehicle.