Blown fuse/fuses and or rear battery?
Thread Starter
Newbie
Joined: Apr 2022
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c350e 2017
Blown fuse/fuses and or rear battery?
I was hooking up a subwoofer to the rear battery and getting signal from the rear amp(c350e wagon)
used the 12+ inlet to the fuse panel back there and hooked my ground straight to the battery.
i then managed to slip and short between + and ground. rear camera/front driverside lumbar support/sound system/ rear window controls/radio signal no longer works. None of the fuses in the fusebox are blown though.
used the 12+ inlet to the fuse panel back there and hooked my ground straight to the battery.
i then managed to slip and short between + and ground. rear camera/front driverside lumbar support/sound system/ rear window controls/radio signal no longer works. None of the fuses in the fusebox are blown though.
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Joined: Sep 2020
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W205
I was hooking up a subwoofer to the rear battery and getting signal from the rear amp(c350e wagon)
used the 12+ inlet to the fuse panel back there and hooked my ground straight to the battery.
i then managed to slip and short between + and ground. rear camera/front driverside lumbar support/sound system/ rear window controls/radio signal no longer works. None of the fuses in the fusebox are blown though.
used the 12+ inlet to the fuse panel back there and hooked my ground straight to the battery.
i then managed to slip and short between + and ground. rear camera/front driverside lumbar support/sound system/ rear window controls/radio signal no longer works. None of the fuses in the fusebox are blown though.
Thread Starter
Newbie
Joined: Apr 2022
Posts: 6
Likes: 2
c350e 2017
nevermind. I just assumed the rear fusebox got power from the battery in the trunk. But iguess it gets power from the front one? Would be weird tho
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Joined: Sep 2020
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W205
What exactly did you hook up the subwoofer to? What ground did you use (because it won't be battery as there isn't one in the back)?
It sounds to me like you might have shorted the whole rear sam in which case you'd need a replacement and coding of it, find a local MB specific shop or take it to a dealer as coding these cars isn't a trivial matter and to code the SAM to the specs of the car you'd need online SCN coding.
Thread Starter
Newbie
Joined: Apr 2022
Posts: 6
Likes: 2
c350e 2017
There is no battery in the trunk though, all power in the car is provided by the battery in the engine bay and/or the supercapacitor behind the passenger footwell foam insert.
What exactly did you hook up the subwoofer to? What ground did you use (because it won't be battery as there isn't one in the back)?
It sounds to me like you might have shorted the whole rear sam in which case you'd need a replacement and coding of it, find a local MB specific shop or take it to a dealer as coding these cars isn't a trivial matter and to code the SAM to the specs of the car you'd need online SCN coding.
What exactly did you hook up the subwoofer to? What ground did you use (because it won't be battery as there isn't one in the back)?
It sounds to me like you might have shorted the whole rear sam in which case you'd need a replacement and coding of it, find a local MB specific shop or take it to a dealer as coding these cars isn't a trivial matter and to code the SAM to the specs of the car you'd need online SCN coding.
Member
Joined: Sep 2020
Posts: 224
Likes: 60
W205
Lucky you, shorted it before the SAM, you can do what you tried to do but make sure to ground it on the specific ground points that are all around the boot and maybe use a fuse slot that has nothing in it already.
Thread Starter
Newbie
Joined: Apr 2022
Posts: 6
Likes: 2
c350e 2017
yep! Just replaced the blown fuse and powered it the way i was going to. Super nice to have power/ground/signal from the stock amp all in the trunk. Easy to set up a sub in there without any loong cables n stuff
