Unusual electrical issue that my mechanic cant figure out – 2003 Honda Element

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Unusual electrical issue that my mechanic cant figure out – 2003 Honda Element

Hello!
I have a 2003 Honda Element with a weird electrical issue. Every now and then, the dashboard lights and gauges go completely dead—no illumination, nothing works, except the brake light stays on even though the parking brake isn’t engaged.

When I turn the engine off, the dashboard starts flashing and clicking rapidly, with different warning lights flickering on and off. The only way to stop it is to restart the engine, turn it off again, and quickly remove the key. The problem is totally random, and my mechanic hasn’t been able to trigger it, so they haven’t been able to diagnose it.

Recently, I figured out that if I smack the top of the dash, everything starts working again—but eventually, the issue comes back. So now I keep a mallet in the car just in case.

Any ideas on what could be causing this o r how to fix it?

Hamza Sultan asked on 12 Feb 2025 16:47:40 pm

1 Answer

23 views |

Waqas Rajput - on 12 Feb 2025 16:48:45 pm

Hi!
Your issue is likely caused by a loose instrument cluster connection, faulty ground, o r a failing multiplex control unit BCM. Since hitting the dash temporarily fixes it, start by removing the instrument cluster and checking for loose o r corroded connectors. Also, inspect and clean ground connections under the dash and hood. If the problem persists, check the fuse box, relays, and wiring harness for damage. A failing BCM may need replacement o r reprogramming. If unsure, an automotive electrician can diagnose it more accurately.