Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×
RV Trip Planning Discussions

Go Back   iRV2 Forums > THE OWNER'S CORNER FORUMS > Winnebago Industries Owner's Forum
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
 
Thread Tools Search this Thread Display Modes
 
Old 01-05-2023, 05:49 PM   #1
Junior Member
 
Join Date: Aug 2021
Posts: 14
Sunstar Battery Problem

We have an almost one year old 2021 Sunstar 27P on a Ford F53 2020 Chassis with the new engine. The coach is still under warranty from Winnebago and from Ford.

During a trip over Thanksgiving in the mountains of Virginia and in Tennessee the battery light would come on climbing long grades and then go off going down a grade or on flat terrain. Several times the light would come on at intermittent times on flat grades and go off.

The first time it happened, stopped at a rest area and called Winnebago and they said it was a Ford issue. Called Ford and they were no help, except they would have us towed to the closest Ford dealer for them to evaluate. I called the closest Ford dealer and they said it would be 2 months before they could look at it. Decided to continue to drive on our trip and the same thing happened on our return.

Coach is now at Ford and after 4 hours they have determined the charging circuit is working properly and the batteries are charged and test ok.
Ford is willing to dig a little further but not much more without a guarantee of payment if they find an issue that is not Ford's but Winnebago's. Was told there are several fault codes but they have not looked into those yet.

I reached out to Winnebago and waiting for a reply. So right now I am in the middle of this problem.

Any thoughts on what to look for or what guidance to give Ford? I am not confident the local Winnebago dealer has any expertise in this area, but have not talked to them yet.
Thanks in advance for any help.
aftergolf is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 01-05-2023, 06:02 PM   #2
Senior Member
 
BayRunner's Avatar
 
Join Date: Oct 2022
Posts: 418
Quote:
Originally Posted by aftergolf View Post
We have an almost one year old 2021 Sunstar 27P on a Ford F53 2020 Chassis with the new engine. The coach is still under warranty from Winnebago and from Ford.

During a trip over Thanksgiving in the mountains of Virginia and in Tennessee the battery light would come on climbing long grades and then go off going down a grade or on flat terrain. Several times the light would come on at intermittent times on flat grades and go off.

The first time it happened, stopped at a rest area and called Winnebago and they said it was a Ford issue. Called Ford and they were no help, except they would have us towed to the closest Ford dealer for them to evaluate. I called the closest Ford dealer and they said it would be 2 months before they could look at it. Decided to continue to drive on our trip and the same thing happened on our return.

Coach is now at Ford and after 4 hours they have determined the charging circuit is working properly and the batteries are charged and test ok.
Ford is willing to dig a little further but not much more without a guarantee of payment if they find an issue that is not Ford's but Winnebago's. Was told there are several fault codes but they have not looked into those yet.

I reached out to Winnebago and waiting for a reply. So right now I am in the middle of this problem.

Any thoughts on what to look for or what guidance to give Ford? I am not confident the local Winnebago dealer has any expertise in this area, but have not talked to them yet.
Thanks in advance for any help.
While I donít have a direct answer that may help but you said that it only happened on the long up grades. What RPMs were you running up these long grades? Did you down shift and run higher RPMs or leave it in a high gear and run lower RPMs?
BayRunner is online now   Reply With Quote
Old 01-05-2023, 06:05 PM   #3
Junior Member
 
Join Date: Aug 2021
Posts: 14
Was always in drive and would downshift when necessary. Did not keep track of the RPMs but went up when the engine shifted.
aftergolf is offline   Reply With Quote
Old 01-05-2023, 06:10 PM   #4
Senior Member
 
Arch Hoagland's Avatar
 
Monaco Owners Club
Workhorse Chassis Owner
Join Date: Aug 2002
Location: Clovis, CA, USA
Posts: 12,296
Are you sure it wasn't the Check Engine Light?

I always carry an OBD reader with me. It has paid for itself.
__________________
2004 Monaco La Palma 36DBD, W22, 8.1, 7.1 MPG
2000 LEXUS RX300 FWD 22MPG 4020 LBS
Measure twice...Cut once.
Arch Hoagland is online now   Reply With Quote
Old 01-05-2023, 06:15 PM   #5
Junior Member
 
Join Date: Aug 2021
Posts: 14
For sure it is the battery light, not check engine.
There is no gauge for the battery, only an idiot light.
aftergolf is offline   Reply With Quote
Old 01-05-2023, 06:52 PM   #6
Senior Member
 
Arch Hoagland's Avatar
 
Monaco Owners Club
Workhorse Chassis Owner
Join Date: Aug 2002
Location: Clovis, CA, USA
Posts: 12,296
You could use one of these if you have a cigarette lighter tied to your engine battery:

https://www.amazon.com/LIHAN-Charger...s%2C143&sr=8-4


Have you ever used a voltmeter to check the 12 volts right at your battery terminals with the engine running?
__________________
2004 Monaco La Palma 36DBD, W22, 8.1, 7.1 MPG
2000 LEXUS RX300 FWD 22MPG 4020 LBS
Measure twice...Cut once.
Arch Hoagland is online now   Reply With Quote
Old 01-05-2023, 06:56 PM   #7
Junior Member
 
Join Date: Aug 2021
Posts: 14
Yes, have checked voltage when running and was 13.4 at idle. The Ford dealer has much more sophisticated equipment and was told everything is working to spec for the entire charging circuit and batteries.
aftergolf is offline   Reply With Quote
Old 01-05-2023, 07:03 PM   #8
Senior Member
 
SteveJ.'s Avatar
 
Join Date: Dec 2019
Location: America's Seaplane City.
Posts: 952
With the extra speed and possibly the fan engaging it could be the serpentine, (I, assume) belt slipping.
__________________
1998 Safari Trek 2480, 7.4 Vortec
'15 Kawasaki Versys650LT, well farkled
Mid Flowriduh
SteveJ. is offline   Reply With Quote
Old 01-05-2023, 07:21 PM   #9
Senior Member
 
Join Date: Jul 2014
Posts: 32,703
Did you have the generator running ?

The house battery charging thru the isolation/charging circuit can sometimes cause the alternator to sense its not charging.

Sometimes just turning on the headlights will put out the low battery indicator.

Sent from my SM-A025V using iRV2 - RV Forum mobile app
twinboat is offline   Reply With Quote
Old 01-05-2023, 07:28 PM   #10
Junior Member
 
Join Date: Aug 2021
Posts: 14
So how would one figure that out? In the shop the coach is in the service bay. Don't know if you can simulate the load on the engine?
aftergolf is offline   Reply With Quote
Old 01-05-2023, 07:30 PM   #11
Junior Member
 
Join Date: Aug 2021
Posts: 14
The genset was not running. Headlights were on during the trip.
aftergolf is offline   Reply With Quote
Old 01-06-2023, 08:07 AM   #12
Senior Member
 
Winnebago Owners Club
Workhorse Chassis Owner
Join Date: Nov 2018
Posts: 2,014
This is the battery light on the dash and not some other battery indicator? If it's the dash light, it's controlled by the vehicle computer and Ford has set all the parameters that will trigger that light. So even if it's caused by an external condition like loads or unintended situations like a miswire, what makes the light come on is known. Poking around on technical forums you should be able to get a good idea what the operating parameters are. If they can't duplicate it at the dealer then you might be stuck with hooking up a meter or two and watching various operating points in the system to detect what might be going out of bounds when the light does come on. OBD data might reveal something but often it doesn't monitor all the points you might need to observe. This could be a problem with a component overheating or thermally unstable, a bad connection or even something winnebago inadvertently or incorrectly connected to some point in the chassis. Since the problem doesn't obviously present itself you get to decide if you pay someone to chase it down, or chase it down yourself.

Mark B.
Albuquerque, NM
Mark_K5LXP is offline   Reply With Quote
Old 01-09-2023, 08:50 AM   #13
Senior Member
 
dkoldman's Avatar
 
Winnebago Owners Club
Ford Super Duty Owner
Join Date: Oct 2019
Location: Dallas, Texas
Posts: 640
I would file the warranty issue with Ford to get it documented. Be prepared to pay the checkout fee, because they likely gonna hide behind they don't see anything.

I had a WBGO issue that would not occur at dealers lot as it was random. They made me pay a checkout fee despite my knowing something was wrong with WBGO wiring under warranty. But WBGO could do nothing if Dealer saw nothing. Made sense, but did not fix my problem.

8 months later with problem still randomly occurring ( and pissed with the dealer to never return there) I got a clue as to where the issuer might be. It was a loose connector pin behind the outdoor breaker panel that was not making good contact. I fixed and reset and problem has never reoccurred. I showed what I did to Dealer, because they should have found, but they just smiled and offered no refund for their failure to diagnose properly.

Maybe try to find another Ford dealer or call Ford Motorhome assistance directly to make them fix it. I can't see it being a WBGO issue.
__________________
2019 Sunstar 29VE Sumo Springs; Safe T Plus; EC-30 AGS; Vmax 250ah AGM; Nighthawk X4 AC2200 WiFi EX7300; H/W Heater / Chassis Disconnect Switches; Southwire Surge Guard 44270 & 34951 w/Monitor 40301; Jet Flo Macerator; Alpine SPE500 Speakers; Visio M21D-H8R
dkoldman is offline   Reply With Quote
Old 01-09-2023, 11:29 AM   #14
Junior Member
 
Join Date: Aug 2021
Posts: 14
I have a case opened with Ford Motorhome support. Was told it will take 1-2 weeks before I will hear back from anyone at Ford.

Contacted WBGO support. They are going to set up a call with WB technical support and the local Ford dealer to discuss to see if they can figure out something. Hope to have that call completed this week. WBGO does not think there is anything on their end that would make the dash battery light come on.

The local Ford dealer is willing to dig in deeper but wants someone give a credit card to pay for their time. Looks like a blank check for them to charge $$ if they cannot find something.
aftergolf is offline   Reply With Quote
Reply

Tags
battery, problem, sunstar



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


» Featured Campgrounds

Reviews provided by


All times are GMT -6. The time now is 10:15 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2023, vBulletin Solutions, Inc.