Mercedes b180 2007 diesal , the battery is new and my car car has needed jump starting twice in the past 2 weeks , ?
Does anyone know what causes the battery to die could it be lights or heating
- thebax2006Lv 71 month ago
Have you gone to n auto parts store and had your battery and charging system tested yet? They do that as a free service. If your bright red battery charge warning light is on you probably need an alternator.
- BarryLv 51 month ago
Use a cheap multimeter to test the voltage across the battery terminals when the engine is running. You should see about 14.6 volts. Much less or intermittent and the alternator is faulty. Although you should first check the serpentine belt tension. It should deflect about 1/2" at the middle of it's longest run with thumb pressure.
- 99%AnonymousLv 51 month ago
if you have new battery that leaves only the Alternator or the Voltage regulator
- Jay PLv 71 month ago
DIESEL, not "diesal".
Have the charging system checked first and if that is okay, check for a parasitic electrical draw when the vehicle is shut down.
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- Andy CLv 71 month ago
Lights don't drain the battery unless left on for months. You've got a 'leak'. Something is improperly grounded and thusly draining your battery.
Does the car shut down while driving? That would likely be a bad alternator (charger).
Do you have speakers with amplifiers? A bad ground or loose wire can short circuits, drawing lots of constant energy.
Use a multimeter and begin diagnosing or take it to the shop!
Do a quick Google/Yahoo search for your model to see if this is a known problem and for possible fixes.