SL-Class (R231) 2013 on: Discussion on the SL550

SL/R231: Switchable 12V in door

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Old 02-11-2024, 02:29 PM
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2015 AMG SL63 (R231)
Switchable 12V in door

Hi All,

I am trying to find switchable 12v somewhere in the door of my 2015 AMG SL63.

When I am testing cables from the door control module, I can only find permanent 12v. Without the door card connected, I can’t really lock the car and measure from the inside :/

Any idea where to grab switchable 12v or the wire color?

thank you so much in advance.
Old 02-13-2024, 10:17 AM
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SL550
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Last edited by Keon; 02-13-2024 at 09:20 PM.
Old 02-14-2024, 01:02 PM
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2020 GLC300 -2013 Sl550 - 1997 SL600
Originally Posted by Heikojuerges
Hi All,

I am trying to find switchable 12v somewhere in the door of my 2015 AMG SL63.

When I am testing cables from the door control module, I can only find permanent 12v. Without the door card connected, I can’t really lock the car and measure from the inside :/

Any idea where to grab switchable 12v or the wire color?

thank you so much in advance.
Do you have a VIN? I can probably post the wiring diagram for the doors from the WIS. You should be careful not to overload certain circuits, depending on what you're hooking up.
Old 02-14-2024, 01:19 PM
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2020 GLC300 -2013 Sl550 - 1997 SL600
Pulled a VIN off Autotrader...
May not be an exact match but, may help.

edit: assumed its for the drivers door.
See attached PDF.
(You should be able to zoom in and rotate any part of the PDF with Adobe Acrobat.)


Good Luck

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