GLC Class (X253) Produced 2016-2022

'22 GLC 300 4MATIC fuse box schematic

Old Dec 26, 2023 | 02:10 PM
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2022 GLC 300 4MATIC
'22 GLC 300 4MATIC fuse box schematic

I read pretty much all "fuse" related posts and I still do not find a single '22 GLC 300 4MATIC fuse box schematic that applies to my unit. I could not locate any folded fuse map in any of the fuse boxes I can locate (front, driver side, passenger well). I do not seem to be able to locate the rear fuse box at all - perhaps that is where my problem lies? Either way, is there anybody here that has a copy of a '22 GLC 300 4MATIC fuse box schematic to share?
I am trying to hard wire a camera and a radar detector and keep the only one available cigarette lighter for other purposes.
Thanks
M

PS. Pretty angry with MB for making it so hard to find fuse schematic for my car. Audi / VW is much better in this respect.
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Old Dec 26, 2023 | 02:28 PM
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'21 AMG53 wDPP & ARC, 19 GLC300 - Former-03 C240,2 ML BlueTecs,20 GLE450 E-ABC,15 Cayenne D,17 Macan
Sometimes you'll find the schematic you're looking for as an inset, or on the reverse side of the main schematic.

I have also seen that schematic, folded, with spare fuses in the spare tire well.
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Old Dec 26, 2023 | 03:09 PM
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2022 GLC 300 4MATIC
I have looked through the glove compartment and all places I have access to, but no luck for now. I wonder whether it was not removed by the previous owner (I am the second owner for this car), which still puts me in a bit of a pickle to work out what is what
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Old Dec 30, 2023 | 02:14 PM
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More fun, I had to remove the trim in my '22 unit (trim under the spare wheel) to gain access to the fuse box. So annoyed right now, this is the worst possible design - not only do you have to remove the spare but also remove the trim panel. There is no access door, nothing. A really poor design choice, if anybody asks me. Cost saving for sure, but annoying from usability perspective.
The fuse sheet was tucked in a slot in the fuse box, really hard to get it out. Pliers to the rescue and I have a fuse schematic. Kind of. It just says what individual fuses allegedly are connected to, but it does not show which ones are hot all the time vs which ones are connected to "ignition". With doors open on passenger side, all 3xx (three hundred) number fuses are hot and they do not lose power even when the car is locked.
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Old Jan 2, 2024 | 10:08 AM
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2022 GLC 300 4MATIC
It seems that the 3xx series fuses are a no-go for any hardwiring, since they are always on, which would leave battery drained over time. I will need to test 2xx series on the driver side to see if any of them is triggered by the ignition signal. I know 216 used to be accessible there and triggered that way, but it seems it was removed in '22 model year for some reason.
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Old Jan 15, 2024 | 06:34 PM
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GLC 300e (x253)
Originally Posted by mmmzon
It seems that the 3xx series fuses are a no-go for any hardwiring, since they are always on, which would leave battery drained over time. I will need to test 2xx series on the driver side to see if any of them is triggered by the ignition signal. I know 216 used to be accessible there and triggered that way, but it seems it was removed in '22 model year for some reason.
Yup, I can confirm that the slot 216 disappeared on every models since '20, as you'll see in this thread dedicated to the hardwiring of a dashcam : https://mbworld.org/forums/glc-class...-glc-x253.html
Also planned to mount a dashcam with the parking mode, but I'm currently stuck and out of solution. I might choose to buy another dashcam already premounted in the mirror box and directly connected to the rain sensor.

Anyway, I'll keep digging and let you know if I've found a solution to any 12V after ignition, even though it seems like it's screwed ..
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Old Apr 1, 2024 | 08:18 PM
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2022 GLC 300 4MATIC
Originally Posted by Miky_
Anyway, I'll keep digging and let you know if I've found a solution to any 12V after ignition, even though it seems like it's screwed ..
After digging through the electrical wiring, consulting with a few car electricians, etc., I was told that is was a deliberate decision by MB and there is no way around it. One solution that was recommended was to tap directly into wiring feeding individual cigarette lighters, but that requires trim removal, etc. I ended up buying two things:and tucked them under passenger seat so that is it no visible. I use the rear cigarette lighter to feed this line - it is not ideal, but it avoids having to run new wiring or dismantle panels. It works reasonably well. I just wish there was a flat cigarette lighter port plug in. I am unable to locate any at this time, unfortunately.

This is where the trip ends, I think. I dislike the MB decision to remove even a single existing switchable port. It is super annoying, honestly.

Last edited by mmmzon; Apr 1, 2024 at 08:23 PM.
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