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Old 08-09-2013, 09:56 AM   #1
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Boost Starting

Some RVs built on the Sprinter chassis have a built in boost switch which permits the house batteries to connect to the chassis battery for emergency starting.

As far as I know the Solera does not have this ability.

Is there any reason you couldn't jump the chassis battery from the house battery using a jumper cable? (Probably wouldn't need to make the negative connection due to common grounds?)
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Old 08-10-2013, 07:03 AM   #2
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Look down low on the left side of the driver's seat. That's where the boost switch is on Sunseeker's.
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Old 08-10-2013, 07:37 AM   #3
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Quote:
Originally Posted by cousin01 View Post
Some RVs built on the Sprinter chassis have a built in boost switch which permits the house batteries to connect to the chassis battery for emergency starting.

As far as I know the Solera does not have this ability.

Is there any reason you couldn't jump the chassis battery from the house battery using a jumper cable? (Probably wouldn't need to make the negative connection due to common grounds?)
In a pinch I don't see why not. Deep cycle batteries are not designed for starting and thus will lack the full cranking amps of a starting battery but at the same time "dead" batteries" often put out much more cranking power than we think. You likely right, bridging the positives should work.
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Old 08-12-2013, 03:43 AM   #4
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Quote:
Originally Posted by RvBill3 View Post
Look down low on the left side of the driver's seat. That's where the boost switch is on Sunseeker's.
Sunseekers yes, Solera no. For whatever reason, MB had an issue with it. I know others may do it... but maybe they are unaware.
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Old 05-30-2015, 10:50 PM   #5
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Do the current 2016 Sunseeker MBS models have the battery boost? I know the Winnebago and Itasca models do so I doubt there is a Mercedes issue with it.
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Old 06-01-2015, 11:19 AM   #6
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They do not. We're looking into it right now. While you say there is no issue, their owners manual states otherwise...which is why we have not done it.

I have attached a pdf of that page in question. basically it says "warning, do not use auxiliary battery for start aid...blah, blah, blah, end of the world, etc, etc".

We're talking to them now about a work around.
Attached Files
File Type: pdf SPRINTER ELECTRICAL.pdf (396.1 KB, 46 views)
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Old 06-01-2015, 02:10 PM   #7
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That's interesting info! I wonder why other RV manufacturers do it on the same chassis. Perhaps they have some circuitry in place to protect from a battery apocalypse.

Also of interest is the location of the battery cutoff by the driver's foot. When I took delivery of my MBS the service guy also showed me a red switch under the hood that he said was for disconnecting the battery. Are there two locations for this?
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