GL Class (X164) 2007-2012: GL320CDI, GL420CDI, GL450, GL550

Trailer connector battery drain?

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Old 01-12-2013 | 01:36 AM
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mikapen's Avatar
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From: Colorado
'21 AMG53 wDPP & ARC, 19 GLC300 - Former- 10&14 ML BlueTecs, 20 GLE450 E-ABC, 15 Cayenne D, 17 Macan
Trailer connector battery drain?

If I leave my 7-pin trailer connector plugged in and run the trailer battery down, is there an isolator of some sort that won't drain the car battery? I have a 2010 ML350 w/ factory hitch.

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