1998 Dodge Grand Caravan Headlights Stay On

1998 ALL OTHER MAKES
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NEEDA MIRACLE
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98 3.0 Grand Caravan 128000 Miles
headlights will not turn off, have also had intermittent power doorlock and power window outages. got no codes because have to disconnect batterry. Is this body control module possibly?
Jun 20, 2006 at 4:58 PM
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JDL
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I realize this is an old post. In the future hope you don't have any vehicle issues, but, if you do, keep the site in mind. They are always working to improve the site. It's free to ask a question and they have more moderators than they used to have.

Our info showed a hi beam relay and lo beam relay. You could pull the relays or applicable fuses to kill the headlamps instead of taking battery cable loose. You would have to remember to put back when you need the headlamps. According to wiring, hi beam relay doesn't use bcm. The lo beam relay does use bcm. The bcm uses a headlamp sense to know headlamp switch is turned on, have to be sure the sense isn't showing closed circuit, with everything off. If it is, your headlamp switch may be faulty or problem with wiring circuit.
Jan 27, 2016 at 12:51 AM
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Suggested Repair

Pull the high- and low-beam relays or related fuses to shut the headlights off instead of disconnecting the battery. The high-beam relay is not BCM-controlled; the low-beam relay is. With everything off, check that the BCM headlamp sense circuit is not closed. If it is, suspect a faulty headlamp switch or a wiring problem.

Conversation Summary

The owner of a 1998 Grand Caravan reports headlights that will not turn off, along with intermittent power door lock and window outages, and asks whether the body control module could be the cause. The expert says the high-beam relay does not use the BCM while the low-beam relay does, and recommends checking the headlamp sense circuit, switch, and wiring rather than assuming a BCM fault.

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