RV Trip Planning Discussions

Go Back   iRV2 Forums > THE OWNER'S CORNER FORUMS > Newmar 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 09-21-2015, 10:51 PM   #1
Senior Member
 
Join Date: Mar 2005
Location: Northern Oklahoma
Posts: 4,451
Why is dash light bar showing "low voltage"

On this trip we spent 5 days at one campground and no problem starting engine to leave there. Next CG was 7 day stay and no problem starting engine to leave there.
Been here 2 days after 150 mile drive to get here. Turned on ignition tonight to check outside temps and the light bar flashed from that information to "low voltage", and back to temperature. In 3 months of ownership I've never seen a "low voltage" message.
2015 DS with 5,000 miles on it. Never noticed the dash volt meter while driving but right now with the ignition on the dial shows between 8 and 13 volts. Too late at night right now to start the diesel engine here in the CG.

I've not touched any of the Magnum Energy buttons during this trip since I'm still trying to understand how all this works but right now it shows Float Charging 13.2V DC. Should there be someplace to check the chassis volts without starting the engine? Do the chassis batteries get charged while plugged into shore power?
In just a little over 30 hours could something have run down the voltage on the chassis batteries that didn't happen in the last two CGs during several days stay?
On my previous couch there was a toggle switch to check voltage on coach and chassis batteries.
__________________

wagonmaster2 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 09-21-2015, 11:06 PM   #2
Senior Member
 
Mr_D's Avatar
 
Country Coach Owners Club
Winnebago Owners Club
Solo Rvers Club
iRV2 No Limits Club
Join Date: May 2011
Location: Vancouver, WA
Posts: 36,779
Alternator is going bad. Had that happen in our '02 DSDP. Cost me over $400 for a new one, then I had the old one rebuilt for $160. Cost was high as they found a bad front bearing too. Would have been about $100 if it had only been the diodes.
__________________

__________________
2009 45' Magna 630 w/Cummins ISX 650 HP/1950 Lbs Ft
Charter Good Sam Lifetime Member, FMCA, SKP
RV'ing since 1957, NRA Benefactor Life, towing '14 Jeep JKU Dragon Edition
Mr_D is online now   Reply With Quote
Old 09-21-2015, 11:10 PM   #3
Senior Member
 
ernieh's Avatar
 
Join Date: Jul 2009
Posts: 1,282
A common cause of a low voltage warning is the inlet heater cycling. Older batteries can amplify the situation.


In 2004, I'm pretty sure that Winnebago had not yet added the Trik L Start to charge the starting batteries when plugged in.
__________________
ernieh
2019 Phaeton 37BH
ernieh is offline   Reply With Quote
Old 09-21-2015, 11:38 PM   #4
Senior Member
 
Join Date: Mar 2005
Location: Northern Oklahoma
Posts: 4,451
Quote:
Originally Posted by ernieh View Post
A common cause of a low voltage warning is the inlet heater cycling. Older batteries can amplify the situation.


In 2004, I'm pretty sure that Winnebago had not yet added the Trik L Start to charge the starting batteries when plugged in.
What is meant by the inlet heater, and how is it cycling? Batteries shouldn't be over 6 months old, unless Newmar installed some past dated batteries during manufacture.
wagonmaster2 is offline   Reply With Quote
Old 09-22-2015, 12:01 AM   #5
Senior Member
 
Mr_D's Avatar
 
Country Coach Owners Club
Winnebago Owners Club
Solo Rvers Club
iRV2 No Limits Club
Join Date: May 2011
Location: Vancouver, WA
Posts: 36,779
Quote:
Originally Posted by ernieh View Post
A common cause of a low voltage warning is the inlet heater cycling. Older batteries can amplify the situation.


In 2004, I'm pretty sure that Winnebago had not yet added the Trik L Start to charge the starting batteries when plugged in.
Never saw that in our '02 Dutch Star.
__________________
2009 45' Magna 630 w/Cummins ISX 650 HP/1950 Lbs Ft
Charter Good Sam Lifetime Member, FMCA, SKP
RV'ing since 1957, NRA Benefactor Life, towing '14 Jeep JKU Dragon Edition
Mr_D is online now   Reply With Quote
Old 09-22-2015, 12:01 AM   #6
Senior Member
 
Mr_D's Avatar
 
Country Coach Owners Club
Winnebago Owners Club
Solo Rvers Club
iRV2 No Limits Club
Join Date: May 2011
Location: Vancouver, WA
Posts: 36,779
Quote:
Originally Posted by wagonmaster2 View Post
What is meant by the inlet heater, and how is it cycling? Batteries shouldn't be over 6 months old, unless Newmar installed some past dated batteries during manufacture.
On newer diesel engines they don't have glow plugs, the put a heater grid in the inlet which is why you can't use starting fluid (ether) in them. Can cause things to go "boom" (expensive and dangerous too) if you do.
Anyway the engine sensors turn on the heating grid if the combined engine temp and air inlet are below a certain combined temp. Going by memory it seems that 65 is the magic number.
That's what's happening if you see the "Wait to start" light on, the grid is heating up and takes quite a bit of power.
__________________
2009 45' Magna 630 w/Cummins ISX 650 HP/1950 Lbs Ft
Charter Good Sam Lifetime Member, FMCA, SKP
RV'ing since 1957, NRA Benefactor Life, towing '14 Jeep JKU Dragon Edition
Mr_D is online now   Reply With Quote
Old 09-22-2015, 06:50 AM   #7
Senior Member
 
Jim_L's Avatar
 
Join Date: Jan 2006
Location: Indianapolis
Posts: 252
There are several things wired to the chassis batteries and perhaps those things were used more than normal. The steps, dash radio, some of the interior lights, front windshield shade, etc. all of those things plus cycling the ignition may be contributing. Perhaps a cb radio that was not turned off. The chassis battery may not be receiving the trickle charge when hooked to shore power which would appear to be a possible warranty issue.
I would be more concerned if the low voltage indication occurred while the engine is running (an indication if a faulty charging system).
__________________
2014 Newmar DSDP 4018-450
Jim_L is offline   Reply With Quote
Old 09-22-2015, 07:07 AM   #8
Senior Member
 
Join Date: Sep 2012
Posts: 8,055
FWIW there have also been reports of new batteries getting prematurely aged by going flat sitting in a dealers lot or storage before sale. If it keeps happening I would put a Digital monitor on the battery voltage.
nothermark is offline   Reply With Quote
Old 09-22-2015, 09:21 AM   #9
Senior Member
 
GaryKD's Avatar
 
Newmar Owners Club
Join Date: Jul 2006
Location: Wellington, Florida
Posts: 13,595
Hi wagonmaster2,
Best I know there is no way to check the chassis batteries from inside the coach. Based on the OP, I would take this off your list of things to worry about. Yes the chassis batteries are charged when the coach is connected to shore power. The chassis batteries are maintained buy the solar panel on the roof (red light on dash somewhere) and via the BIRD/BIM or whatever Newmar has put in your coach to ensure both the coach and chassis batteries are kept charged when connected to shore power. If you want to do a bit of diagnostics consider:
1. Disconnect the chassis batteries from the coach and each other.
2. Take a voltage reading for each battery. 13.2 VDC or more?
3. With the chassis batteries fully charged do a load test. A load tester can be purchased at the auto parts store of your choice. My tester is rated at 130 AMPS. If you purchase a tester get one rated at 100 AMPS minimum. The test is quick and easy to perform. It will tell you the status of each battery.
4. Reconnect the batteries to each other and the coach .
__________________
Gary
2005 Newmar KSDP 3910 + GMC ENVOY XUV 37K lbs Moving Down The Road
The Avatar Is Many Times Around The USA
Nobody Knows Your Coach Like Somebody Who Owns One Just Like Yours
GaryKD is offline   Reply With Quote
Old 09-22-2015, 01:50 PM   #10
Senior Member
 
spinn's Avatar
 
Join Date: Oct 2012
Location: Houston, TX, 77069
Posts: 2,148
Wagonmaster, if the light didn't stay on and you seem to have sufficient power in the batteries is it possible that it was just a normal message during the engine startup routine?
__________________
Steve Pinn
2008 Newmar Essex-4514
2014 Ram Laramie ecodiesel
spinn is offline   Reply With Quote
Old 09-22-2015, 02:39 PM   #11
Senior Member
 
Join Date: Feb 2015
Location: Boulder, CO
Posts: 375
Having had several issues with low chassis batteries lately, and because I have a 2015 DS as well, I have another few suggestions.

First, if you see this again, push the single button on the level check panel (above the windshield) until it cycles to show battery voltage. Observe the measured voltage on the chassis battery and house battery banks. No need to bother with the analog gauge on the dash or the one that's buried in the triptek screen.

Next, if the chassis bank is reporting low, you should see it charge when on shore power or generator. The conditions under which the BIM cross-connects the chassis bank to the house bank for charging are somewhat complex. They are laid out on page 16 of this PDF:

https://comnet2.newmarcorp.com/insta...ctrical12V.pdf

Basically, though, if you're parked at a campground, it should connect in the chassis bank if the house battery is charging at >13.2V and the chassis battery is under 12.6V. Note that in the later stages of charging, with low amperage trickling into SLA batteries, the charge voltage may not be above 13.2, which means the relay won't engage, no matter how low the chassis batteries are. You're most likely to see the chassis batteries charging in the first hour or two after you park and plug into shore, when the controller is in bulk or absorb.

If, instead, you continue to see the chassis bank's voltage stay in the 12's whilst the house bank is being charged at 13+, that would suggest that BIM is not allowing chassis to charge. You'll want to check it several times over the course of an hour or so and see if it's acting properly.
__________________
Newell p2000i "The Enterprise"
nebster is offline   Reply With Quote
Old 09-22-2015, 07:17 PM   #12
Senior Member
 
Join Date: Mar 2005
Location: Northern Oklahoma
Posts: 4,451
Many thanks for all the help. I've been having trouble getting on the internet due to the fact the CG owner changed security codes for access to his wifi and it took me till mid-afternoon to start asking questions which then I was given the new security code.

Early this morning I took my digital multi-meter and checked the voltage on the two chassis batteries combined, which was 12.80V. Then after getting on the internet and reading all the responses I used the Level Check for the house/chassis batteries and it was bouncing back/forth for the chassis batteries between 12.8-12.9.

Just hope I'm not having de-ja vu with another Freightliner's dash instruments. The first 5-6 years I owned my previous 2004 Itasca about twice a year the first time I'd start the engine after it'd been setting for several days all the instruments would be dead. A phone call to the nearest FL shop got suggestions to clean the battery posts, which by the time I did all that the dash instruments were working but didn't fix the problem. I managed to get the coach to a different FL shop twice while the instruments were dead but they were never able to find the problem. Several times the instruments were back working by the time I got to the FL shop and they could do nothing then.
After owning the coach for 5-6 years all this never happened again.

Glad to know I can check the battery conditions with the Level Check button. There is so so much about this 2015 DS I'm nervously uncomfortable not knowing what it's for or how to use it. But with the help of the Forum I'm slowly struggling through them.
wagonmaster2 is offline   Reply With Quote
Old 09-23-2015, 03:17 AM   #13
Senior Member
 
Join Date: Feb 2015
Location: Boulder, CO
Posts: 375
Good. If chassis bank is in approximately steady state (not cross-connected for charging, not under load, just "resting") then 12.8ish is full. I think that safely rules out the charging side, but perhaps check level each time before you crank just to make sure you're still okay.

I was having an issue with leaving my docking lights on: they would drain the chassis batteries, but after they'd been fully charged up via the BIM cross connect. The house bank for whatever reason stayed topped off and needed no more charging until the morning. Then the chassis bank was low in the morning! Duh.
__________________
Newell p2000i "The Enterprise"
nebster is offline   Reply With Quote
Old 09-23-2015, 05:52 AM   #14
Senior Member
 
Join Date: Mar 2009
Location: Apollo Beach, FL
Posts: 2,390
FWIW, I've had that happen maybe 5 times over the 2 2/2 yrs we've had our 2013 DS.
__________________

PanJH is offline   Reply With Quote
Reply

Tags
dash, light



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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Rear tail light failure aeroquality Newmar Owner's Forum 1 07-05-2015 02:50 PM
F53 2006 battery idiot light in dash Magister54 Ford Motorhome Chassis Forum 3 05-01-2015 06:46 AM
350 ISC "alt fail" dash light on. Nana25K Cummins Engines 9 11-17-2014 07:45 PM
DIY troubles: taillight sockets and dash lights! monacle Monaco Owner's Forum 16 02-04-2014 06:44 AM
Round amber light on dash of 2000 discovery davidf1 Fleetwood Owner's Forum 9 09-18-2013 08:01 PM

» Featured Campgrounds

Reviews provided by


All times are GMT -6. The time now is 08:38 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
×