Red security light on dash and nothing else?

Tiny
LEARNED
  • MEMBER
  • 2002 DODGE RAM
  • 5.9L
  • V8
  • 4WD
  • AUTOMATIC
  • 165,000 MILES
The red security light is on my dash. The truck runs fine but nothing on the dash works. Headlights are on all time switch doesn't respond. No brake lights, blinkers or hazards. Has a new front control module batt cables ignition switch fuse box. I'm at a loss.
Friday, March 28th, 2025 AT 6:58 PM

9 Replies

Tiny
KEN L
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  • 54,137 POSTS
Yep, I have seen this problem before, the instrument cluster needs to be replaced/rebuilt. The lighting system you have motioned go through the cluster. You can get a preprogrammed unit by searching Google or Ebay. Let us know how it goes.
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Saturday, March 29th, 2025 AT 4:30 PM
Tiny
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The cluster can control all these different functions? And is there a way to test the cluster?
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Sunday, March 30th, 2025 AT 3:58 PM
Tiny
KEN L
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Sure, you can test the input and outputs of the cluster, here is a guide to help you and the wiring diagrams for the headlamps and exterior lights.

https://www.2carpros.com/articles/how-to-use-a-voltmeter

Check out the images (below). Please let us know what happens.
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Monday, March 31st, 2025 AT 12:03 PM
Tiny
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Can you tell what the this black box on the back of the cluster is? When you go to buy a new one most don't come with this.
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Friday, April 4th, 2025 AT 3:10 PM
Tiny
KEN L
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Good question, it looks like a cover, can you remove it?
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Saturday, April 5th, 2025 AT 10:43 AM
Tiny
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Looked it up says it's for remote keyless entry. Got a new cluster on the way.
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Saturday, April 5th, 2025 AT 11:06 AM
Tiny
KEN L
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Sounds good, let me know what happens and have a good weekend!
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Saturday, April 5th, 2025 AT 11:52 AM
Tiny
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Thank you. I wish I would have talked to you first! Sir you saved the day, it worked.
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Sunday, April 13th, 2025 AT 3:31 PM
Tiny
KEN L
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You are welcome, glad you could get it fixed, thanks for letting us know.
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Monday, April 14th, 2025 AT 9:30 AM

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