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Old 12-13-2018, 01:31 PM   #1
Junior Member
Brand: Thor Motor Coach
State: Alabama
Posts: 23
THOR #11594
House battery

2014 Windsport 27K

I notice when deploying/retracting auto levelers there is a message "low voltage". The levelers work fine. Is this indicating I need to replace AGM battery? If so, is it just unhooking old batt, replacing with new batt and rehooking? Or more involved and I need to let RV repair facility take care of?

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Old 12-13-2018, 02:00 PM   #2
Senior Member
Brand: Thor Motor Coach
Model: Hurricane 31S
State: Texas
Posts: 1,860
THOR #6411
You probably do not need to replace your batteries. The system monitors both the chassis battery and the house batteries. If your coach has been sitting for awhile and you just started the engine, you should wait for the voltage to stabilize before attempting a retraction. If you have drawn the house batteries down, the engine's alternator will supply the required voltage after about 2.5 minutes to the house batteries and you won't get the low voltage warning. The system warns anytime the batteries' voltages are below 12.7 volts, but will continue to operate until it sees a voltage below about 12.1 volts.

Jim & Roy Davis
2016 Hurricane 31S
1961 Rampside in tow
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Old 12-13-2018, 02:04 PM   #3
Thor Palazzo 33.3 diesel
TurnerFam's Avatar
Brand: Thor Motor Coach
Model: Palazzo 33.3 34'bunkhouse
State: Georgia
Posts: 2,339
THOR #4735
low voltage is not any reason to change your house battery, as it is more of a 'low level' indicator to the owner that the battery reading is low for the hydraulic system to deploy or retract the legs... but they generally will work in MANUAL mode regardless.
These systems comtemplate needing a certain amount of Volts to work the full cycle, and I suspect are set too high, giving the low volts reading more often than really warranted.

Some will crank their generator, or leave their engine running, in order to help satisfy the warning, and wait for it to go off, when they can then use the AUTO button, but I prefer to use the MANUAL leveling method anyway, which is not inhibited by the warning.

If you are having no other issues with 12v devices, lights, etc., then, no, you don't really have any issue with your battery(s).
the Turners
'14 Palazzo 33.3 bunkhouse 34' diesel
KingTailgater2 Dish HD, 100w/5a SOLAR, BlueOx
100,000+mi since '14 - US, Alaska, Canada - Hiawassee, GA! (also, '14 Gulfstream Amerilite and '07 ForestRiver Rockwood) : )
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Old 12-13-2018, 02:42 PM   #4
I Think We're Lost!
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Brand: Still Looking
Model: Tiffin Wayfarer 24 BW
State: New York
Posts: 14,639
THOR #8860
If you think of the "Low Voltage" warning kind of like the yellow light coming on at an intersection: it's easier to accept, than the flashing Blue Lights in your rearview mirror!
Good Sam Member 843599689
FMCA Member F473304
Current coach: Tiffin Wayfarer 24 BW
"Well I may be confused... But you know I sure ain't down!"
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Old 12-13-2018, 03:36 PM   #5
Site Team
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Brand: Thor Motor Coach
Model: ACE 27.1
State: Florida
Posts: 4,543
THOR #7035
Are you running the MH engine while operating the leveling system?
Ted & Melinda
2016 ACE 27.1
2016 Chevy Sonic Toad
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Old 12-14-2018, 09:26 AM   #6
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Brand: Still Looking
State: Missouri
Posts: 425
THOR #5437
I know my ACE when deploying the jacks, I have to have the engine running or I will get the low voltage light. My house and motor batteries are fully charged when this happens. This leads me to believe that the leveling system needs a strong 12v. system to deploy the jacks.

Retired and never looked back
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