Yes it has a good battery. Is the malfunction that only occurs during daylight. It is a mystery to me, but to one technician, it is the plastic , or the lense that has wore off. The alternative is buy new ones, but don't sell them as a replacement part. You're forced to buy both door handles and the trunk system because they're factory coded and like I said before they won't provide you with the little simple lenses. The whole thing costs around $800 plus dollars.