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Weird electrical issue! 2004 Durango 5.7L Limited 4x4

855 Views 1 Reply 1 Participant Last post by  ddm2k
Primary concern: New battery goes dead if D sits for a week. However, if run every day the drain is slow enough that it will start each morning.

Super weird side behavior: while driving at night, on the course of a 10 minute well traveled route, no less than three (3) times all of these things happened at exactly the same moment:

  • Instrument cluster went dark, reset, came back up
  • Radio (REC nav) rebooted to Dodge logo then came back up
  • Temperature in overhead console immediately changed to -40F


  • No loss of engine power or throttle, stayed running
  • Headlights did not even blink

Now I think I might have found what’s draining my battery, but it still doesn’t explain the other stuff above. After connecting my NoCo 10 Amp to recharge the battery, I started the vehicle for awhile and then shut it back off. I locked it, interior lights went off, but then a second after the interiors went off, the HVAC (auto climate, has buttons not knobs) lit back up! What in the world!

I did not hear any blower running from outside the car, I unlocked, and as soon as I opened a door, the screen of it went off! No misbehavior from radio, instrument cluster, or overhead console during that particular event.

So I disconnected a battery cable in between drives. Any ideas where to start looking or how to test?

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To anyone with this same issue:

Sunroof drains were clogged (you only want to worry about the easy two up front) the driver side one can clog and overflow down your A pillar and soak that fuse box near your left foot! Go through a car wash - is your driver side carpet wet?

I used fish tape from Lowe’s: plastic, get the thin straight round one, these channels are NO more than 1/4” inner diameter. Open the sunroof completely and look at the two front corners where you can feed this through and clear any debris.

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