Battery Drain I have a 2009 FXDF that has a draw that is draining my battery if I do not ride it at least once a week. I have added LED blinkers with a Badlands load equalizer, a magnetic cruse control and riding lights. When I test my fuse box I found the 40 AMP main fuse drawing 1.1 amp when off and the 15 amp fuse 3rd column 2nd row is drawing .076 when off. I have reviewed all of the wires and do not see any grounding issues or cut wires. Thoughts?
Switch could have gone bad. Usually you get more use but it's not uncommon. If your fuse and wiring checks out there is not much else that could break the circuit. One thing you want to remember is to make sure the switch is capable of taking what your battery is putting out. A 3 amp switch will almost certainly fail. 6 amp, at least, is recommended. But they do go bad. Change out the switch and make sure to insulate any exposed metal with shrink tubing.
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If you have used an amp meter and pulled all fuses and relays, and still can't find the source of the battery drain in your 2009 2500HD Silverado, there are a few other things you can try.
Check for aftermarket accessories: If your vehicle has any aftermarket accessories installed, such as a stereo system or alarm system, they may be causing the battery drain. Check the wiring for these accessories to ensure they are properly installed and not causing a short circuit.
Check the alternator: A faulty alternator can cause the battery to drain. Test the alternator to make sure it is functioning properly and charging the battery.
Check for parasitic draw: Even if you can't find a specific component causing the battery drain, there may be a small parasitic draw on the battery that is draining it over time. To check for this, disconnect the negative battery cable and place an amp meter in-line between the battery terminal and cable. The reading should be less than 50 milliamps. If it's higher, start pulling fuses one at a time to see if the draw decreases.
Check the battery: If your battery is old or has been drained multiple times, it may not be holding a charge properly. Have your battery tested to make sure it is still in good condition.
If you've tried all of these steps and still can't find the source of the battery drain, it may be time to take your vehicle to a professional mechanic or auto electrician for diagnosis and repair. Electrical problems can be difficult to diagnose and repair, so it's best to get help from a professional.
The problem is that an electrical component in the BMW that should be dormant when the vehicle is shut down is actively drawing power.
The only way to track it down is to have tests run to see which circuit is drawing excessive power because there are numerous components that might be the cause.
Your problem is either that the battery is not being properly charged, OR that there is a circuit that is drawing power from the battery when the vehicle's key has been removed and all is supposed to be off.
If new battery and just a few weeks old it is eligible for warranty replacement. Get a new one and see what happens. If that one also goes dead then you certainly have an issue like I indicated before.
??? are you certain its that ??? that fuse will most likely control all the power in the fuse box and the 3.5 amp you see that's called the parasitic draw will most likely be that of the cars computer..
3.5 amp wont drain a battery over night nor in a week i'm assuming you have at least a 500CCA battery here.
battery's don't drain like that, they do loose power once they have a bad cell, or the battery water is low. I'm assuming you had it tested here by a technician from the battery shop and that's what they told you and its a new battery or relatively new..
to test this your self you can take the battery out of the vehicle and leave it outside over night, you will see the power is drained out and it wasn't connected to anything. Thats because of the bad cell..
To prove it to them, Remove the caps If its not a sealed maintenance free one and you will see bubble coming out of the bad cell once the car is idling.. (don't inhale the fumes or let it get in your eyes)
A 6 amp draw would be enough to drain the battery overnight. are you sure its not lower?
The easiest way to find a draw is to start removing fuses one at a time until the draw goes away making sure to replace the fuse before moving onto the next so you don't end up with a pile of fuses that you don't know where they go. Once you have narrowed down the fuse that eliminates the draw you can then start to focus on all the devices that circuit powers up.
Typically you would want to see a draw of less than .050 amps and in your situation you should see less that .030 amps or even less after the draw is gone.
Post back after your find out what fuse eliminates the draw and I'll do my best to get you some more info on that circuit.
It could be a shorted voltage regulator. Sometimes they will short and draw current even when the bike is not running. I would measure the current drain with an amp meter by removing a battery cable and inserting amp meter between the cable end and the battery. Then pull one fuse at a time to locate the current draw. If pulling fuses doesn't find it then while still testing with the amp meter disconnect the voltage regulator and see if current draw stops.
aside from hallogen fog lamps, i cannot think of other matters / parts of a bike that can drain the battery. this is a clear short issue. check the wirings and make sure that the circuits are harnessed, you'll see the difference once they are tied up. BTW, if the battery is a year old, have it recharged.
The alternator test will likely indicate a charging problem from the alternator that is not keeping the battery charged up.
Regardless of the alternator test, it would be best to do an electrical draw test to determine whether there is an excess drain on the battery. This can be done with an ammeter between the positive terminal and the positive battery post. This test is done with key off, all accessories off, no lights on, etc. There will be a small draw on the battery in all newer vehicles, but it should be in the order of up to 50 milliamps. If you are getting more than 200 milliamps of current draw then there is a problem with an electrical system that will drain the battery over a period of days or weeks. Once you know this is true, the electrical systems can be methodically tested.
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