"Battery Saver Mode"

[Hoefler]

Have your batteries tested, most likely you have one or both going bad. I have never had OEM batteries last over 2 years.

 

[AH64ID]

I had a goofy start yesterday. 16 degrees and no grids, started instantly. I contributed it to the fact my dump trailer was plugged in to the onboard charger.??

The rest of the start was the same, shutters closed, high idle and e-brake came on.

Instantly as in no grid heater delay, or instantly as in no extended cranking with the cold?

Remote start or regular start?

The wiring to the trailer is so small I doubt you get more than 5A of help to the starter. I never see more than 5-10A pushing into my camper batteries and that’s with the engine running.

Anyone know if battery saver mode shuts off grid heaters?

I didn’t notice the one time I saw battery saver mode last winter. It only flashed for a couple seconds.

Unless you’re idling or driving slow the grids don’t run long for post-heat anyways. Once you hit 2 minutes of idle or 18 mph, whichever comes first, they shut off.

 

[Timd32]

Here is some lite reading.

BATTERY SAVER MODE
The Intelligent Battery Sensor (IBS) communicates with the Body front Control Module (BCM) over the Local Interface Network (LIN) bus and provides the BCM with battery voltage, current temperature, and State Of Charge (SOC) information. The BCM uses SOC and voltage of the battery, directly measured by the IBS, to determine load shedding strategies. device When the load shed criteria are met, load shed level messages are broadcast by the BCM on the Controller Area Network (CAN) bus.

The BCM turns off loads under its control, and passes on the message to a secondary control device to turn off loads.

All load shedding is conducted in an orderly and progressive manner to avoid electrical power system instability and to minimize customer anxiety and concerns.

To enter the load shed operation, three conditions must be met:
1. The engine must be running
2. The battery SOC must be less than or equal to 70%
3. The battery voltage measured by the IBS must be less than, or equal to 12.2 V Instrument Panel.

When these three conditions are met, the load shed operation begins. The Battery Saver On message is displayed on the Cluster (IPC) to inform the driver that actions are being taken to save the battery. Below is a lis of prioritized loads that are shed in sequence.

Load Shed Level 1 - None (reserved by engineering for future developments)

Load Shed Level 2 - When there is a net charge loss of 7.5 amp hours (Ah), the heated seates and the heated steering wheel system take load reduction actions (when equipped).

Load Shed Level 3 - When there is a net charge loss of 10 Ah, the heated cooled cupholders are turned off (if equipped).

Load Shed Level 4 - When there is a net charge loss of 12.5 Ah, the rear defroster and heated mirror turned off.

Load Shed Level 5 - When there is a net charge loss of 15 Ah, the Heating, Ventilation, and Air Conditioning (HVAC) system takes load reduction actions.

Load Shed Level 6 - When there is a net charge loss of 17.5 Ah, the power inverter system is turned off (if equipped).

Load Shed Level 7 - When there is a net charge loss of 20 Ah, the audio and telematics system takes load reduction actions.

Charging System:
The charging system is independent from load reduction.

The charging system performs a diagnostic on the charging system continuously.

If the Charging System Light is on it may indicate a problem with the charging system.

Loss of the battery charge may indicate one or more of the following conditions:

The charging system cannot deliver enough electrical power to the vehicle system because the electrical loads are larger than the capability of charging system. The charging system is still functioning properly.

Turning on all possible vehicle electrical loads (HVAC to max settings, exterior and interior lights, overloaded power outlets +12V, 115V Alternating Current (AC), Universal Serial Bus (USB) ports) during certain driving conditions such as city driving, towing, and frequent stopping.

Installing options like additional lights, up-fitters, audio systems, alarms and similar devices.

Unusual driving cycles (short trips separated by long parking periods).

The battery aging. The vehicle was parking for extended period of time (weeks, months).

The battery was recently replaced and was not charged completely.

The battery was discharged by an electrical load left on when the vehicle is parked.

The battery was used during parking time to supply radio, lights, chargers, +12V portable appliances like vacuum cleaner’s, game consoles and similar devices.

 

[AH64ID]

Based on that if battery saver mode appears more than 5 minutes after a start I would suspect a bad/weak battery and/or alternator.

 

[JR]

https://www.mopar.com/en-us/care/dy...DBA4E3-F1DC-4F3C-8508-786067D152E6&tocID=9115

 

[NIsaacs]

AH, it started with no grid delay with push button. It startled me.

 

[AH64ID]

AH, it started with no grid delay with push button. It startled me.

Gotcha, was it cold soaked?

If the engine temp was 66°F then there won't be a WTS even if the ambient temp is COLD.

 

[NIsaacs]

Gotcha, was it cold soaked?

If the engine temp was 66°F then there won't be a WTS even if the ambient temp is COLD.

Yes, overnight. It always works (grids) but not this time.

 

[AH64ID]

Yes, overnight. It always works (grids) but not this time.

Maybe it thought you double tapped the start button to bypass the grids, which is what I usually do unless it's stupid cold.

 

[Learjet]

that document talks about shipping mode and how to put it in or out of shipping mode. Anyone every try that to save the battery when parked for an extended time?

 

[Topzide]

On Alfa there was an option for shipping mode. Might be something to try if truck will be parked for extended time. Alfa is full of options and settings! Learning more and more about these trucks every day!

 

[Wiredawg]

On Alfa there was an option for shipping mode. Might be something to try if truck will be parked for extended time. Alfa is full of options and settings! Learning more and more about these trucks every day!

One thing to consider is it might wipe all user programmed features... Battery minder or like is likely better.

 

[Topzide]

@Wiredawg , Don't think it would wipe any info or how would they program truck, ship and deliver without the dealer having to progrom before you took delivery. I think shipping mode puts everything in an inactive state just like a computer that you turn off, pack it up and ship to your new location and finally setup 6 months later. Everything is still there, just needs to wake up and refresh everything. I could be wrong, but everything stays put after removing batteries and doing reboot. JM2C. Enjoy these trucks!

 

[AH64ID]

@Wiredawg , Don't think it would wipe any info or how would they program truck, ship and deliver without the dealer having to progrom before you took delivery. I think shipping mode puts everything in an inactive state just like a computer that you turn off, pack it up and ship to your new location and finally setup 6 months later. Everything is still there, just needs to wake up and refresh everything. I could be wrong, but everything stays put after removing batteries and doing reboot. JM2C. Enjoy these trucks!

Looks like it's easy enough to do with the steering wheel controls. I may try it today.

 

[Learjet]

One thing to consider is it might wipe all user programmed features... Battery minder or like is likely better.

I was thinking about a situation where you might be parked at the airport for a few weeks.

 

[Learjet]

Looks like it's easy enough to do with the steering wheel controls. I may try it today.

let us know if it works!

 

[Turbo Terry]

In my experience if you go to a battery store to have your battery’s tested they will be bad. They make no money testing battery’s They are in the selling batterys business. Buy you own tester. Several good ones on the market now

 

[AH64ID]

let us know if it works!

I've tried twice now and nothing indicated it was changing modes. The .pdf that @Timd32 attached is for a 2019 so it's likely different for my 2018.

EDIT: Well I found this for 2018 and it's the same as another one I found for a 2022. Bottom line is that if there is more than 110 miles on the odometer it cannot be changed back into ship mode.