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Old 11-22-2013, 06:10 PM   #1
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Coach won't start

So my coach won't start and the chassis batteries are only reading 3.6 volts. I tried the aux start and I get nothing. My house batteries are full and the coach is plugged into 50amps! Does anyone have any ideas on what to do and can I jump start the coach off the house batteries???

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Old 11-22-2013, 06:27 PM   #2
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So my coach won't start and the chassis batteries are only reading 3.6 volts. I tried the aux start and I get nothing. My house batteries are full and the coach is plugged into 50amps! Does anyone have any ideas on what to do and can I jump start the coach off the house batteries???

Thanks

Jason
You should be able to jump them with cables if the house batteries are 12 volt.
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Old 11-22-2013, 06:30 PM   #3
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Can you start your genny? If so I think they will charge up your coach batteries after the house batteries are fully charged. How long has your unit been sitting? Any lights, warnings showing up on dash?
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Old 11-22-2013, 07:10 PM   #4
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My coach is plugged in. Won't that charge the batteries?
No I get no lights at all on the dash or anything. They are completely dead. Does the generator charge the chassis batteries?? If so why wouldn't shore power?
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Old 11-22-2013, 07:15 PM   #5
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Could the battery shut off switch gotten turned to the off position somehow? Also, check to see if there are any fuses/breakers in the battery compartment or on the inverter that could have tripped.
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Old 11-22-2013, 07:20 PM   #6
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My coach is plugged in. Won't that charge the batteries?
No I get no lights at all on the dash or anything. They are completely dead. Does the generator charge the chassis batteries?? If so why wouldn't shore power?
Are the battery terminals corroded?
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Old 11-22-2013, 07:27 PM   #7
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A battery charger or a 12 volt jump start should give you an indication of where to start. As soon as you connect a charger to your batteries you should get dash lights even if the unit still wont start. Also, the toggle switch on the dash, (AUX) should allow for battery sharing to start the unit.
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Old 11-22-2013, 07:31 PM   #8
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So my coach won't start and the chassis batteries are only reading 3.6 volts. I tried the aux start and I get nothing. My house batteries are full and the coach is plugged into 50amps! Does anyone have any ideas on what to do and can I jump start the coach off the house batteries???

Thanks

Jason
If you have another vehicle available and jumper cables I think you should take that approach. With only 3.6 volts that battery is totally dead (or badly corroded cables at the posts 10x may be spot on) and will have to be cycled up with an alternator or a good charger that has the ability to cycle up dead batteries. You will have to let the jumper cables have time to charge your battery for a while before attempting to start your coach.
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Old 11-22-2013, 07:48 PM   #9
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Aux start won't work!! Not sure why since house batteries are full and coach is plugged in. Ran jumper cables from my house batteries to chassis batteries and all lights came on but I fried my cables!! Don't think they were strong enough for the voltage!!! Going to get better cables and try tomorrow. Still don't understand why my aux start won't work though!!! Is there anything special I need to do to make it work???
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Old 11-22-2013, 08:01 PM   #10
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Your batteries for your engine are a separate circuit, they are not connected to the house batteries. Sounds like you need new batteries for you engine. How old are they?
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