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Model specific boards => Golf mk7 => Topic started by: Bluest on 31 October 2025, 15:40
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Puzzling over a mystery. My interior boot light does not work. Bulb changed, there is 12v at the connector and electrical continuity through the holder and the bulb. I've even tested the little diode installed in the bulb holder which is working correctly. Could this be a high resistance somewhere, or something else? Maybe bad earth. Any ideas where to look?
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Noticed my bulb was out last week and just got round to ordering a replacement bulb.
Gone for an LED one this time. Read it has to be fitter the right way around otherwise it doesn’t work. Wouldn’t expect that is your issue here though.
Will be watching for any updates in case I have the same issue.
Good luck sorting it out
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Bit of an odd one. Maybe the issue is in the switch that detects the hatch is open?
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Do you know where the switch might be located? Is it in the latch?
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Yes, it’s in the latch.
From memory there’s an access panel in the inside trim of the boot which will expose latch assembly bits that can be wiggled to see if the switch activates the boot light.
I’m assuming all the other interior lights work correctly(?)
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Left field thought, but could it be an issues with the BCM (body control module) or similar?
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Do your interior lights come on when the doors open? If they’re turned off, iirc it disables the one in the boot too.
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Left field thought, but could it be an issues with the BCM (body control module) or similar?
Not sure how I would test that. Are the lights powered directly from an output on the BCM? Could that explain why I see 12v at the light? That could be a very low current monitoring voltage.
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Do your interior lights come on when the doors open? If they’re turned off, iirc it disables the one in the boot too.
Yes, interior lights working normally.
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Left field thought, but could it be an issues with the BCM (body control module) or similar?
Not sure how I would test that. Are the lights powered directly from an output on the BCM? Could that explain why I see 12v at the light? That could be a very low current monitoring voltage.
Unfortunately I think most circuits run through the BCM, do you have an OBD2 scanner where you could check for any BCM error codes?
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Not currently, it's on the shopping list though.