Either the battery has a dead cell and needs replacing or something is pulling power from the battery when the engine is off. I had a problem with my 1986 Cadillac DeVille where the power antenna was stuck and the motor would run all night trying to lower the antenna. To resolve the problem I just removed the fuse for the power antenna motor.
No, a bad ground will not drain the battery. A dead cell in the battery will most certainly drain it. If it has a dead cell it must be replaced. Also any light that is on will drain it. Lastly a stuck relay will run it down.
This is caused by one of two reasons. Either the battery has a dead cell and needs replacing or there is a parasitic drain on the battery. The drain can be any light that is constantly on or a relay that is stuck.
Yes. Happened to me today in Audi A3
lights being on all night....radio...electronic matters such as so...
Either something is stuck on like interior lights or there is a short inside the battery. Have the battery checked Just wanted to add my experience. If no lights are left on, that you can see, then check the light in the glove box. My light stayed on and it took me a month before I figured it out because you can't see it when the door is closed. Instead of fixing the switch I just took out the bulb. In my 1986 Cadillac DeVille I had a problem where my electric antenna was stuck, and the motor would run all night trying to lower the antenna. That would drain the battery. Once I noticed the hum of the antenna motor, I figured it out and removed the fuse for the antenna motor. Still trying to find a replacement part...
A dead cell in the battery will cause the battery to loose it's charge overnight. The battery must be replaced if this is the case. Also, any light that is on will drain the battery. A stuck relay will also drain it. Disconnect the negative cable at night in the dark and if you see a spark of any size then something is on. You will see a very tiny spark which is normal but look for a spark that show a large power draw.
There's a number of things ... but the one that got me was a stuck fuel pump relay. It stayed closed and the fuel pump ran all night.
the voltage regulator in the alternator is going bad it can possibly stick when everything is turn off and drain you battery over night.
Pull battery and let it sit over night. Leave the key in the ignition in the on position to drain whats left of the charge. When you connect the battery back the next day it should be gone. Don't leave the key on when you reconnect the battery.
The most common cause is a dead cell in the battery which requires that the battery be replaced. It can also be a light on somewhere. Like and under-hood, glove box, trunk, curtorsey light, etc. Can also be a relay that is stuck.
Looked at my dads van and it had a drain 0.27 it should be 0.03 when I removed the stereo fuse it went. I unplugged the cd changer but it's still there so I think it's the sat nav unit