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Desperate for help with map light stuck on

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Old Jan 27, 2021 | 08:07 PM
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SamHenson
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Desperate for help with map light stuck on

Alright guys, I'm at my wit's end with this. Been having intermittent problems with my map light just coming on randomly, usually while parked, and ONLY in cold weather. It also makes a chime, like they key is left in. I tried the WD40 trick on all the hinges, and the switch. No help. Then my buddy bought a really nice code reader, and finally pulled a code for driver door ajar. So I replaced the switch. Problem went away for a couple months. Just started again today. Gonna have him pull the codes again tomorrow. Also, when I tap the dash over the instrument cluster, I can get it to stop. So far, that's the only way to get it to stop after it starts, a quick slap on the dash. Desperate for suggestions. New instrument cluster?
it's an 05 F250, with a 5.4l, fyi. I have a video of symptoms, but can't post it.
 
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Old Jan 27, 2021 | 09:17 PM
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Carefully check all the solder joints on the instrument cluster. My old truck's odometer would only work if you slapped the dash. Turned out to be a bad solder connection.
 
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Old Jan 27, 2021 | 09:27 PM
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Originally Posted by muhford
Carefully check all the solder joints on the instrument cluster. My old truck's odometer would only work if you slapped the dash. Turned out to be a bad solder connection.
Thanks Muhford. I'll try that. The backlight on my fuel gauge also only works when you tap on the dash, so that might actually track. Did you just re-solder the connection?
 
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Old Jan 27, 2021 | 09:28 PM
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Yup. Just touched it up and it worked fine.
 
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