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The number one cause of the battery drain you describe is the battery itself. Remove the battery from the vehicle and clean the battery exterior and the area the battery sits in with baking soda mixed with water. Clean the battery cable conections and re-install the battery. While it's possible something is staying on or activating and draining the battery that's a much less frequent occurrence. You should start by having your starting and charging system checked. If you express to the shop that you're concerned that something may be draining the battery while the vehicle is off, they should also perform what's called a "draw test." While some items (such as the clock) remain on even though the vehicle is off, their power consumption is low. Performing a draw test will tell the technician how much current is flowing while the vehicle is off. It should be less than 50mA. Anything 100mA or above is cause for concern. Look at, of course, dome light & courtesy lights, glove box light, trunk & hood light. Also in very rare instances you may have a power window switch stuck in the up position. Even rarer would be a power door switch stuck. I would suspect you need a new battery, especially if the battery is over 3 years old.
What else can I help you with?
Battery drainage on 1997 Chrysler town and country and is not alternator could it be that the radiator needs flushing which it does but would it cause battery to drain?
A raidator in need of a flush will not cause a battery drain.
What would cause the battery to drain when the lights are on in a 2002 KIA when the alternator is good and battery is good?
A short in the wiring.
What would cause a battery drain on a 1991 F-150?
Shorted diodes in the alternator.
What would cause a battery to drain in a 1989 mercury sable if it is not the power cords or alternator?
dead cell in the battery or something is on pulling power from the battery.
What would cause a large drain of a battery of 1998 ford escort?
Your alternator could be bad.
What relay could be stuck that would drain a cars battery?
Any relay could be the cause.
What would cause a battery to drain on a 62 Lincoln if nothing is on?
If no light is on and no relay is stuck then the battery has a dead cell and needs replacing.
What would cause a 1998 Chevy Tahoe to drain the battery when the truck is off And with nothing else on?
Could be a shorted wire, or bad battery.
What cause a battrey to drain when you starter a truck?
I'd recommend you do a battery test and charging system test. The battery would be my first suspect.
Would a bad ignition switch cause battery to drain overnight and smoke out of steering column?
Good possibility
Would a bad voltage regulator on a 1985 Dodge Ram pick up truck cause the battery to drain?
Yes possible. If switch does not open on engine shut down battery will drain If switch does not close on start up battery will not charge
What would cause a 2000 Ford Taurus motor to not turn over?
dead battery, flooded engine, could be any number of things.
