Battery

You need to make sure the battery has a full charge and the charging system is ok. If there is excessive drain, with everything off, check that. Make sure no lites are staying on interior-- under the hood, everywhere. Best time to check is in the dark. You can take battery cable loose from battery, use a testlite between battery post and cable, if lite comes on and stays on, you have a drain. If the problem circuit is a fused circuit, you can remove and replce fuses, one at a time. When you pull the fuse on the problem circuit, the lite goes out. It'ds best to check amp draw.