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If the alternator is good and the battery is new, then something is draining the battery while it's parked. In the old days people left their headlights, radio or something on and this drained the battery. Now a days this is not as big a problem with 5 minute timers that turn off lights if you forget. I would take it back to whomever did the alternator work for an answer. How old is the battery? You can take it to see if it can't hold a charge any longer. In my experience, most batteries don't seem to hold a charge after about two years. Did anyone do some custom work in your car that requires electricity? It could be this extra stuff is draining the battery.
Hi:
Though your car seems fine without using the headlights, you have a charging problem, and need to get a couple things checked out. First make sure your battery connections are clean and tight. Your alternator belt should also be checked to make sure it is serviceable and properly tightened too. Your alternator should be checked under load, and lastly, your battery too. Most auto parts stores, such as auto zone,will check your parts for free,so you should only be spending money on what is broken!
are your dasboard lights at full brightness?Turn your headlight switch(it may be on the interior light detent).BTW I drive a '97 Bonneville SE and one great thing about these cars is that if you leave a light on it will shut off after about 5 minutes so it won't drain your battery overnight.
sounds like u have a wire shorting out somewhere? as for the draining is ur alternator working??? try a curcuit tester on wires to headlights and alternator.
I own the same year make and model. The headlights are supposed to stay on for a few minutes if you shut them off after shutting off the engine. This is a safety feature. These are the headlights only. If the lights, side markers and taillights stay on, then the issue is most likely the switch. You will have to pull the switch and disconnect the wiring harness to confirm this. If the lights go out, then the switch is bad.
However, if the lights don't go out, or the headlights never shut off until they drain the battery, you may want to take the car in to get diagnosed. There could be an issue with the body control module or wiring. Most likely, it is the switch as Chrysler uses the cheapest parts for their switches, but I would check it first and not swap parts. All you have to do to check the switch is pull the bezel it sit in out of the dash. The switch is held in with two screws.
Recharge the battery. Or buy a new one. But make sure you have a fully charged battery.What happened was that the battery drained because it probably needs replacement. When the battery drained too low. The ECU deprogramed itself. When installing a new or fully charged battery. Start the car. You may have to remove the negative cable a few times then restart it for the CPU to go into the default settings.
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