S-Class (W222) 2014-2020

12V Trunk Outlet

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Old 09-02-2019, 11:40 PM
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2014 S550 AMG, 2017 XT5
12V Trunk Outlet

On a 2014, I connected my trickle charger, but the trunk outlet was off. I had to unlock the car to get it to turn on. I know other people use this outlet to keep the battery charged during storage, but it looks like it is not active all the time. Is there a setting to keep it active so I can use the battery maintainer?
Old 09-06-2019, 06:52 PM
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2014 S550 AMG, 2017 XT5
Anyone use the Trunk lighter outlet with a trickle charger / battery maintainer? Is it suppose to be constant on?
Old 09-10-2019, 11:38 PM
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2014 S550 AMG, 2017 XT5
Originally Posted by Nice Ride
Anyone use the Trunk lighter outlet with a trickle charger / battery maintainer? Is it suppose to be constant on?
Can anyone confirm if the Trunk Outlet can be used to connect a battery maintainer?

Thanks!
Old 09-13-2019, 12:47 PM
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s550 Diamond white amg pano
sorry man I havent needed to charge the car yet.

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