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Old 03-26-2019, 02:56 PM   #1
tsudapod
 
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Default Jumping aux battery. I AM AN IDIOT

Whats up yall

2017 MB 144 4x4 outfitted by tourig in golden CO. Dead battery for whatever reason and like an idiot I tried (unsuccessfully) to jump the aux battery. Now the cabin lights and outlets that run off the aux when motor is not running do not work. I went to MB and they replaced the aux battery (300 bones$$$) still nothing works. No clue what to try next. Open to any suggestions. Yes I already know Im an idiot .....


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Old 03-26-2019, 03:35 PM   #2
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Default Re: Jumping aux battery. I AM AN IDIOT

First I would check all fuses.
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Old 03-26-2019, 03:49 PM   #3
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Default Re: Jumping aux battery. I AM AN IDIOT

Which battery was dead, the one under the hood or the one under the drivers floor?

And are you still in Golden? If so call Dennis at Linden Engineering, he'll sort you out. And for a lot less than the stealership!!!

Keith.
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Old 03-26-2019, 03:53 PM   #4
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Default Re: Jumping aux battery. I AM AN IDIOT

2017, not under warranty?
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Old 03-26-2019, 03:55 PM   #5
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Default Re: Jumping aux battery. I AM AN IDIOT

After fuses, check for power at the socket, then try new light bulbs.


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Old 03-26-2019, 05:30 PM   #6
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Default Re: Jumping aux battery. I AM AN IDIOT

Quote:
Originally Posted by Cheyenne View Post
Which battery was dead, the one under the hood or the one under the drivers floor?

And are you still in Golden? If so call Dennis at Linden Engineering, he'll sort you out. And for a lot less than the stealership!!!

Keith.
The starter battery under the seat was dead but I was too stupid to know that there were two batteries and I tried to jump the aux when
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Old 03-26-2019, 05:55 PM   #7
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Default Re: Jumping aux battery. I AM AN IDIOT

Quote:
Originally Posted by tsudapod View Post
The starter battery under the seat was dead but I was too stupid to know that there were two batteries and I tried to jump the aux when
Surely a 2017 has its starter battery under the floor and NOT under the seat!
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Old 03-26-2019, 09:00 PM   #8
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Default Re: Jumping aux battery. I AM AN IDIOT

Jump the aux?

Meaning what exactly, applied jumper cables to the aux battery from an outside vehicle? While trying to crank the propulsion engine starter?
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Old 03-26-2019, 09:25 PM   #9
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Default Re: Mercedes Benz Sprinter 906 NCV3 jumpstart locations.

...For future reference, utilize the jump starting feature located in the engine compartment. Refer to "Jump Starting" in Owner's Manual for more information.


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Last edited by Bobnoxious; 03-27-2019 at 03:52 AM.
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Old 03-27-2019, 01:30 AM   #10
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Default Re: Jumping aux battery. I AM AN IDIOT

I'd also check the relay off the aux battery - as I understand it, the relay closes (passes current between aux and starter battery) when the ignition is turned on, so between your connected jumpers and a more fresh aux battery, you might have pushed too much current through the relay. If so, it's a pretty simple fix.

And don't beat yourself up - it's an easy mistake to make!
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