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Old 09-23-2015, 04:55 PM   #1
steveha's Avatar
Join Date: May 2015
Posts: 36
Thor Sprinter battery/isolator

I have a 2015 Siesta Sprinter, I left the lights on and killed the battery.

From page 96 in the 2015 siesta sprinter motorhomes owner's manual:

4. In the event the automotive battery is discharged, it will be
necessary to press and hold the Start Switch located in the dash.

There is no switch..called Thor ,they say MB will not let the put in switch.
(generic owners manual is wrong)
I asked where the isolator was and was told it was under the hood..NOT
I think it under the drivers seat but can't look now. It should have a by-pass button.

Does any one know where the isolator is, and can it be wired to use the house batteries to start the sprinter? (I have cables and got a nice RV'r to help me jump it)

Also does anyone with a Sprinter have a switch than enables the house batteries?

Thanks in advance
Betsy Steve & Barney
2015 Thor Siesta 24SR
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Old 09-23-2015, 11:03 PM   #2
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Honwing's Avatar
Join Date: Aug 2014
Location: Woodland, Washington
Posts: 537
Have a 2013 Itasca Navion IQ with Battery Boost on the dash below the radio that allows the house batteries to be used to start the engine when chassis battery is too low to do so.
2004 Itasca Horizon 40AD. 400hp Cummins
2015 Ford Fusion Hybrid Titanium
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battery, thor

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