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Author Topic: Replacing coach & Chassis batteries in 2016 Winnebago Navion  (Read 212 times)

Driver555

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Replacing coach & Chassis batteries in 2016 Winnebago Navion
« on: January 10, 2019, 10:59:48 PM »
I have bought 3 brand new batteries for the coach and am getting ready to install them.  I have been told by a local RV dealership that when replacing batteries, the Mercedes onboard computer needs to be updated as well.  Is this true?  Anybody have any experience changing out old batteries with new?

Arch Hoagland

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Re: Replacing coach & Chassis batteries in 2016 Winnebago Navion
« Reply #1 on: January 11, 2019, 12:31:02 AM »
Can't help with the update question but I will make a suggestion.

Take pictures with your cellphone BEFORE you disconnect anything. I'fe seen more than one post where people have hooked up their new batteries wrong.

I'm curious why you are replacing the batteries. 

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John Canfield

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Re: Replacing coach & Chassis batteries in 2016 Winnebago Navion
« Reply #2 on: January 11, 2019, 07:45:00 AM »
Welcome to the forum.  Great idea to take pictures!!!

I can't imagine the ECU needs to have a firmware upgrade due to a loss of power - that makes no sense to me. Call Winnebago Owner Relations and ask them just to double-check.
--John
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SpencerPJ

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Re: Replacing coach & Chassis batteries in 2016 Winnebago Navion
« Reply #3 on: January 11, 2019, 02:03:31 PM »
I will say that my Yukon XL throws a fit when I change the battery.  It throws my front and rear HVAC system out of wack.  Sometimes I have to disconnect and reconnect, a couple times.  They actually make a little gizmo that plugs into charging port to keep electronics powered while you exchange battery.  I've often thought you could probably, CAREFULLY, take some jump leads and have a second battery connected to the cables and accomplish the same. 

As John stated, a quick call to Winnebago  :))

One more comment:  a 2016 and batteries bad ???
« Last Edit: January 11, 2019, 02:06:00 PM by SpencerPJ »

IBTripping

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Re: Replacing coach & Chassis batteries in 2016 Winnebago Navion
« Reply #4 on: January 11, 2019, 02:08:06 PM »
For such a new coach, I don't see why you'd need an update. Are you switching to AGM or lithium batteries?
1996 Coachmen Catalina 230BH

Driver555

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Re: Replacing coach & Chassis batteries in 2016 Winnebago Navion
« Reply #5 on: January 14, 2019, 09:58:58 PM »
Thanks so much for your replies.  Not switching to AGM or Lithium.  Just back to the good old lead/acid again.  My batteries are 3 years old, and I have not taken care of them very well.  Didnít realize that I needed to pop off the top caps occasionally and adding distilled water. 

Driver555

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Re: Replacing coach & Chassis batteries in 2016 Winnebago Navion
« Reply #6 on: January 14, 2019, 10:01:55 PM »
I will take a picture before starting.  I probably would be one of those to get the wires mixed up on reinstall...   You guys are great in my book.   

Gizmo100

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Re: Replacing coach & Chassis batteries in 2016 Winnebago Navion
« Reply #7 on: January 14, 2019, 11:09:34 PM »
I can't explain why...But the Nissan work van I used had to have 12 volts fed into the power point before the battery could be swapped.
This was done by the auto parts store that sold us the battery. When I asked him why it needed the 12 volts and he replied the computer tells them which vehicles needed the 12 volts.

Note: The installation was free as was the use of the 12 volt box.
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IBTripping

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Re: Replacing coach & Chassis batteries in 2016 Winnebago Navion
« Reply #8 on: January 15, 2019, 01:13:23 AM »
Thanks so much for your replies.  Not switching to AGM or Lithium.  Just back to the good old lead/acid again.  My batteries are 3 years old, and I have not taken care of them very well.  Didnít realize that I needed to pop off the top caps occasionally and adding distilled water.

So sorry you didn't know about the maintenance of the batteries. Nothing wrong with lead acid batteries other than the hassle of remembering to check the fluid level and add distilled water. 
« Last Edit: January 15, 2019, 01:16:05 AM by IBTripping »
1996 Coachmen Catalina 230BH

John Canfield

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Re: Replacing coach & Chassis batteries in 2016 Winnebago Navion
« Reply #9 on: January 15, 2019, 07:28:14 AM »
... Didnít realize that I needed to pop off the top caps occasionally and adding distilled water.
The beauty of AGM is they are completely sealed and can even be operated on their side. If you don't want to keep up with checking battery electrolyte then AGMs are an obvious choice. They also charge faster and self-discharge slower than lead acid. I got seven years out of my first set and I replaced them just because.

Bottom line is they are a significantly battery chemistry than flooded cell.
--John
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