The Volt has an auxiliary battery back-up that allows the electronic door locks to still operate.
Remove the battery and check it with a volt meter.
If the battery goes dead flat the door will still unlock manually with the key.
Dead or weak battery? Alternator not charging battery properly?
Use the key to unlock it. The key is manually activated. Only the keyless entries will not work when the battery is dead.
Probably not. The cordless drill will, at best, see the battery as nearly dead; it probably won't work at all.
Put the key in the door and turn.
Your battery is about dead .
Around 4 hours on a dead battery.
Use jump leads from another vehicle or charge your battery on the car
If you can not unlock them with a key, you will have to call a locksmith.
use key to manually unlock. manual unlock will not work.
just check the voltage. if its below 12 volt then you have a dead cell. each battery has 6 cell ( 2 volts each cell.)