YES
For a battery to "Drain" you MUST have a short somewhere or the "Glovebox" or "Trunk" light is staying on etc. etc. Battery's don't just "Drain" on there own ;-) TommyTrouble
Yes. Happened to me today in Audi A3
Either the switch was left in the wrong position, or the thing is defective. The dome lights draw enough current to drain the battery overnight.
The overhead light used up the battery. Get a new battery.
I disconnected the battery and left doors open. I was thinking it would drain the capacitors. I left it for about 30 minutes. The check engine light was off and the warning on the dash disappeared.
I disconnected the battery and left doors open. I was thinking it would drain the capacitors. I left it for about 30 minutes. The check engine light was off and the warning on the dash disappeared.
Anything left plugged in and powered up can drain the battery.
The battery might drain
Old battery unable to hold a charge? Hidden accessory left on? (glove box light, under hood light, etc.) Bad voltage regulator (not opening circuit on shutdown)? Excessive parasytic load?
Unnoticed accessory left on? i.e. trunk light, glove box light Excessive parasytic load? Bad voltage regulator - not opening circuit on shut-down?
A battery that runs down overnight is normally caused by a dead cell in that battery. The only fix is to replace the battery. It can also be caused by any light that is left on, on the vehicle. Dome light, under hood light, trunk light, glovebox light, or even brake lights that our on due to a sticking brake light switch. A relay that is sticking can also cause this. Disconnect the negative battery cable and let the vehicle sit overnight. If the battery is still charged the next morning then you know the battery is good. If the battery is dead then you know the battery has a dead cell and must be replaced.
Bad Battery. Bad Alternator. Lights left on by mistake. Something left running. Exc.