2020 car and all left-side dash fuses are constant and not switched?
Thread Starter
Super Member
Joined: Aug 2011
Posts: 504
Likes: 49
W205, X253, C190, W213,
2020 car and all left-side dash fuses are constant and not switched?
I have seen lots of posts of people using fuses 219 and 204 as switched sources of power for radar detectors and dashcams.
I'm trying to hardwire in a radar detector and it seems that every fuse in the left-side dash fuse panel is constant and not switched.
Am I missing something? The car has Keyless Go. Is power kept on because the key is nearby?
Pics for reference:
Actual fuse panel.
Fuse map.
I'm trying to hardwire in a radar detector and it seems that every fuse in the left-side dash fuse panel is constant and not switched.
Am I missing something? The car has Keyless Go. Is power kept on because the key is nearby?
Pics for reference:
Actual fuse panel.
Fuse map.
Senior Member
Joined: Jul 2019
Posts: 286
Likes: 140
From: Bay Area, CA
2016 C300W4 (W205), Luxury Pkg, Diamond Silver Met. and Silk Beige\Espresso Interior
You've got a lot of blank spaces in your fuse box.
You may still be able to pull power from 218 or 219. Even if there is no existing fuse there, 12v switched might still be present.
Mine below (the 12v to 5v converter cable for my dashcam is blocking view of the left side fuses):
You may still be able to pull power from 218 or 219. Even if there is no existing fuse there, 12v switched might still be present.
Mine below (the 12v to 5v converter cable for my dashcam is blocking view of the left side fuses):
Member
Joined: Aug 2019
Posts: 97
Likes: 16
C200 estate 2019 AMG line premium plus.
Some systems will stay live for around 10 mins after the ignition is turned off and will power up again when the car is unlocked.
This gives the impression that fuses are constantly live.
This gives the impression that fuses are constantly live.
Newbie
Joined: Jun 2017
Posts: 10
Likes: 0
From: The Bay Area, CA
CLK 430
Pretty odd - i have a 2018 C300 and all my driverside fuses are switched (not constant). ???
I have seen lots of posts of people using fuses 219 and 204 as switched sources of power for radar detectors and dashcams.
I'm trying to hardwire in a radar detector and it seems that every fuse in the left-side dash fuse panel is constant and not switched.
Am I missing something? The car has Keyless Go. Is power kept on because the key is nearby?
Pics for reference:
Actual fuse panel.
Fuse map.
I'm trying to hardwire in a radar detector and it seems that every fuse in the left-side dash fuse panel is constant and not switched.
Am I missing something? The car has Keyless Go. Is power kept on because the key is nearby?
Pics for reference:
Actual fuse panel.
Fuse map.
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Member
Joined: Apr 2019
Posts: 80
Likes: 25
From: Florida
2020 GLC43
nice, looks like a great option! thanks! so frustrating, i spent a day to wire dual dash cam to the trunk. I could not even imagine that front fuse boxes and rear view mirror would not have switched power. If i knew upfront, I would wire RD to the trunk as well but it is too late now and I would hate to do all this work again lol 
Newbie
Joined: Oct 2021
Posts: 8
Likes: 0
Mercedes-Benz GLC 2020
P.S.: I have tried fuses in the rear/ trunk fuse box numbered 412 & 416 and they are live for 60 min. I will also try the ones numbered 459 & 460 and post an update.
Last edited by Stalinik; Oct 8, 2021 at 05:11 AM.
Newbie
Joined: Aug 2023
Posts: 13
Likes: 6
S560 4Matic
I have seen lots of posts of people using fuses 219 and 204 as switched sources of power for radar detectors and dashcams.
I'm trying to hardwire in a radar detector and it seems that every fuse in the left-side dash fuse panel is constant and not switched.
Am I missing something? The car has Keyless Go. Is power kept on because the key is nearby?
Pics for reference:
Actual fuse panel.
Fuse map.
I'm trying to hardwire in a radar detector and it seems that every fuse in the left-side dash fuse panel is constant and not switched.
Am I missing something? The car has Keyless Go. Is power kept on because the key is nearby?
Pics for reference:
Actual fuse panel.
Fuse map.
