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Cabin Light not working at night

haze10

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So my interior cabin light comes on fine during the day, every time I open the door. But for some reason it doesn't come on at night. Definitely not in deep sleep mode as driving the truck daily. Any ideas.
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haze10

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Yes. But never drained the battery and truck is only 18 months old with 10K miles. If the battery, why work during the day and not at night?
 
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haze10

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so far yes, it never seems to come on at night but does during daylight.
 

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Master Blaster

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Your OEM battery is sulphated and about to die completely. I'll bet it measures below 12.0V after an overnight sleep. Have you had all your recalls and SSM53801 for the a/c power leak fixed?
 

Glen Baker LLC

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so far yes, it never seems to come on at night but does during daylight.
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A while back I noticed this.
At night if I come home and I'd manually turn off my headlights. In the morning when I get in my Maverick before I put the key in the ignition the interior lights will not come on.
Once I start the truck the headlights revert to the AUTO Default and the interior lights will come on when the door is opened.
 
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Chopperbobc

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There is something else that controls the cabin lights, but I don't know what it is.....after a few days of not running my cabin lights fail even though my 12 volt AGM battery is at 12.6 volts..... can someone explain why this happens....ty Bob
 

Master Blaster

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The only other thing that controls the cabin lights is the 3-position switch in the centre of the roof console. It is normally in the centre position.
 

Chopperbobc

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Mine is always in the middle position and this happens many times....
 
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MaverickMark

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So my interior cabin light comes on fine during the day, every time I open the door. But for some reason it doesn't come on at night. Definitely not in deep sleep mode as driving the truck daily. Any ideas.
I got the sleep mode notice everyday and I drove the truck everyday. I think it's your battery too.
 

Master Blaster

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Your battery is totally toast. I think that at night with the extra headlight and taillight loads, the voltage is decreasing from your dead battery to the point where the system is going into self-preservation sleep and not turning on the nonessential interior light. During the day you are just above that trigger level and the light will go on for a short period.
 

boxster03

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it makes no difference that your truck is new or you drive it daily - deep sleep mode is an issue with bad software engineering causing a constant drain on the battery and the battery not fully charging when you do drive it - you can change the battery that may or may not "fix" the issue
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