How do I unlock the door when the battery is discharged

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When I use the key from the remote it turns but does not unlock the doors. The battery is completely discharged and I tried spray lubricant in the key slot as previously suggested but the door will not unlock... If I can get a door unlocked I can gain access to the hood released and place the battery on a slow charge. The side windows are so tightly sealed, I doubt eve a locksmith could get a door unlocked.