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Old 07-07-2018, 03:39 PM   #1
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Dead battery when it sits

I am very new to this. When my 2017 Int. sits for 3 days the chassis battery is dead (eg. 6 v. won't open the doors). I have made sure the radio etc is off. The dealer says no unusual draw and the charging system and battery are ok. This just isn't right. Any ideas are very much appreciated. Thanks.
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Old 07-07-2018, 04:58 PM   #2
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So something is drawing down the Chassis battery. Is the house battery staying charged?

I also have 2017. Never had issue with chassis battery but some have reported some fusion wiring issues. I have ran down house batteries but I left fan/fridge/propane switch on.
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Old 07-07-2018, 05:20 PM   #3
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Can you disconnect the battery, remove the negative cable, from the rig and charge it over night? If so disconnect the charger in the am and test the voltage later that day. If the battery is good you shouldn't see a voltage drop of more than a 1/10 volt or so.



Get a cheap, Pep Boys hydrometer and check each battery cell just after the charge. They should all be the same.


If the stand alone battery will hold a charge touch the negative cable to the battery post a watch for the spark. The size of the spark will give you an idea of the back ground current draw.

I suspect the battery is bad if it has been discharged below 9 volts a few times.

There is a ton of stuff running in background on newer vehicles. Besides the memory in the radio there is most likely a Body Computer. The batteries in my Excursion will go dead in a week or less of siting. Lincoln had a major problem with this a few years back.
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Old 07-07-2018, 05:59 PM   #4
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Hi

Simple set of tests:

1) Get a current meter and *measure* the current being pulled off the chassis battery with everything turned off. If it's over an amp, start digging for things.

2) Pull the chassis battery and get it tested. If it fails, you may have some warranty money left in it. That makes testing it at a dealer who handles that brand a good idea.

3) Put a multimeter on the battery with the engine running. Make sure it comes up to a reasonable charge voltage. If it does not, get the alternator / voltage regulator troubleshot.

Yes, there are a whole variety of other possibilities and rabbit holes to wander down. There's a pretty good bet one of the above will find the problem.

Bob
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Old 07-08-2018, 10:19 AM   #5
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I had a similar situation and determined it was the Fusion Entertainment system. I had pushed the power button which darkened the screen but did not turn the system off. I’ve also realized that if I switch off the battery disconnect for the house (allowing current to flow) the Fusion system comes on! So, when I park my 2016 for a few days without shore power I switch on the battery disconnect. The solar panels keep the batteries topped off and all is good.

Hope this helps. Dead batteries are a bummer.
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Old 07-08-2018, 12:47 PM   #6
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Quote:
Originally Posted by Mobey View Post
I am very new to this. When my 2017 Int. sits for 3 days the chassis battery is dead (eg. 6 v. won't open the doors). I have made sure the radio etc is off. The dealer says no unusual draw and the charging system and battery are ok. This just isn't right. Any ideas are very much appreciated. Thanks.

You are correct - this isn't right.

Which dealer are you talking about - Airstream or Mercedes? Recommend you contact Airstream customer service. The battery drain on 2017 Interstates is a well know problem that has been discussed extensively on this forum. It appears to be caused by incorrect wiring of Fusion radio/entertainment system.
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Old 07-08-2018, 12:49 PM   #7
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dead battery when it sits

Ignore the comment about using a hydrometer - all batteries on Interstate are sealed AGM.
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Old 07-09-2018, 12:24 AM   #8
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I put a battery tender on the Airstream and the f350. This solved the problem you are having.
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Old 07-11-2018, 12:47 PM   #9
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dead battery when it sits

I bought a new 2017 International Serenity 23’ Airstream.
After just a month the “New” Interstate Batteries died. Brought it to the “Interstate Battery Dealer and they replaced them. A headache especially after paying $70K for an Airstream!
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Old 07-11-2018, 03:15 PM   #10
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FYI this thread is about an Interstate RV, which has its own unique battery/charger system and peculiarities.



Quote:
Originally Posted by hpjack View Post
I put a battery tender on the Airstream and the f350. This solved the problem you are having.
Quote:
Originally Posted by dustin View Post
I bought a new 2017 International Serenity 23’ Airstream.
After just a month the “New” Interstate Batteries died. Brought it to the “Interstate Battery Dealer and they replaced them. A headache especially after paying $70K for an Airstream!
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Old 07-11-2018, 05:26 PM   #11
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Quote:
Originally Posted by OTRA15 View Post
FYI this thread is about an Interstate RV, which has its own unique battery/charger system and peculiarities.

OTRA15 - so nicely put. But I will say it on behalf of other Interstate owners - "unique/pecularities" = headaches (which I am still trying to fully comprehend)
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Old 07-12-2018, 09:19 AM   #12
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I like a ‘clamp-on’ type DC Ammeter.
But you need to make sure it will measure very small current flow- not all do.

I’ll try to find a link to the one I use. It is does very low current flows.
1 amp for three days draw 24 hours a day adds up.

mark
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Old 07-12-2018, 01:55 PM   #13
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Quote:
Originally Posted by Mobey View Post
I am very new to this. When my 2017 Int. sits for 3 days the chassis battery is dead (eg. 6 v. won't open the doors). I have made sure the radio etc is off. The dealer says no unusual draw and the charging system and battery are ok. This just isn't right. Any ideas are very much appreciated. Thanks.
Hi Mobey,

We're very sorry to learn about the issue you are having. Please send us a direct message with your contact information and the last 6 digits of your VIN so we can share it with our Customer Service and Technical Support team.

You can also reach Airstream Customer Service and Technical Support at customer_support@airstream.com

Thank you.
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Old 07-13-2018, 12:17 AM   #14
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Hi Mobey,



We're very sorry to learn about the issue you are having. Please send us a direct message with your contact information and the last 6 digits of your VIN so we can share it with our Customer Service and Technical Support team.



You can also reach Airstream Customer Service and Technical Support at customer_support@airstream.com



Thank you.


Wow! Truly pleasantly surprised an Airstream representative is reading this thread and actually is contacting the Airstream owners to help solve problems !
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