Coasting mode

[D.J.]

Actually, the addon is receiving the data as a percent. I'll post the raw data it receives from the API below.

This kind of makes sense. Although it still doesn't entirely explain why I can also experience no discharge 24+ hours later. Sometimes days later. Then sometimes 24 hours later I get the extreme discharge.

Here's the raw data from the API (some data removed for obvious reasons). Apologies for how long it is.
Vehicle data
vinKey: REMOVED
vehicleConfig:
vehicleDetail:
vehicle:
vin: REMOVED
trim:
modelYear: '2022'
salesModelCode: H6382
optionGroupCode: '010'
modelName: STINGER
factoryCode: J5
projectCode: CKPE
trimName: GT1
driveType: '1'
transmissionType: '1'
ivrCategory: '3'
btSeriesCode: H
telematics: 1
mileage: '15340'
mileageSyncDate: '20231206015449'
exteriorColor: MICRO BLUE
exteriorColorCode: Micro Blue
fuelType: 1
invDealerCode: VA065
testVehicle: '0'
supportedApps:
- appType: '0'
- appType: '5'
appImage:
imageName: uvo-app.png
imagePath: /content/dam/kia/us/owners/image/common/app/access/
imageType: '2'
imageSize:
length: '100'
width: '100'
uom: 0
activationType: 2
images:
- imageName: 2022-stinger-gt1-Micro Blue.png
imagePath: /content/dam/kia/us/owners/image/vehicle-app/2022/stinger/gt1/
imageType: '1'
imageSize:
length: '100'
width: '100'
uom: 0
device:
launchType: '0'
swVersion: CKPE.USA.S5W_M.V009.001.221011
telematics:
generation: '3'
platform: '1'
tmsCenter: '1'
billing: true
genType: '2'
versionNum: GASOLINE
headUnitType: '0'
hdRadio: X40HA
ampType: NA
headUnitName: avn5w
bluetoothRef: '20'
headUnitDesc: AVN5.0W
maintenance:
nextServiceMile: 2659.7998
maintenanceSchedule:
- 6000
- 12000
- 15000
- 18000
- 24000
- 30000
- 36000
- 42000
- 45000
- 48000
- 54000
- 60000
- 66000
- 72000
- 75000
- 78000
- 84000
- 90000
billingPeriod:
freeTrial:
value: 12
unit: 0
freeTrialExtension:
value: 12
unit: 1
servicePeriod:
value: 60
unit: 1
lastVehicleInfo:
vehicleNickName: My STINGER
preferredDealer: VA069
licensePlate: ''
psi: ''
customerType: 0
enrollment:
provStatus: '4'
enrollmentStatus: '1'
enrollmentType: '0'
registrationDate: '20211223'
expirationDate: '20221219'
expirationMileage: '100000'
freeServiceDate:
startDate: '20211219'
endDate: '20221219'
activeDTC:
dtcActiveCount: '0'
vehicleStatusRpt:
statusType: '2'
reportDate:
utc: '20231206172141'
offset: -8
vehicleStatus:
climate:
airCtrl: false
defrost: false
airTemp:
value: LOW
unit: 1
heatingAccessory:
steeringWheel: 0
sideMirror: 0
rearWindow: 0
heatVentSeat:
driverSeat:
heatVentType: 0
heatVentLevel: 1
passengerSeat:
heatVentType: 0
heatVentLevel: 1
rearLeftSeat:
heatVentType: 0
heatVentLevel: 1
rearRightSeat:
heatVentType: 0
heatVentLevel: 1
engine: false
doorLock: true
doorStatus:
frontLeft: 0
frontRight: 0
backLeft: 0
backRight: 0
trunk: 0
hood: 0
lowFuelLight: false
ign3: false
transCond: true
distanceToEmpty:
value: 240
unit: 3
tirePressure:
all: 0
dateTime:
utc: '20231206172141'
offset: -8
syncDate:
utc: '20231206165449'
offset: -8
batteryStatus:
stateOfCharge: 70
deliveryMode: 1
sleepMode: false
lampWireStatus:
headLamp:
headLampStatus: false
lampLL: false
lampRL: false
lampLH: false
lampRH: false
lampLB: false
lampRB: false
stopLamp:
leftLamp: false
rightLamp: false
turnSignalLamp:
lampLF: false
lampRF: false
lampLR: false
lampRR: false
windowStatus:
windowFL: 0
windowFR: 0
windowRL: 0
windowRR: 0
smartKeyBatteryWarning: false
washerFluidStatus: false
brakeOilStatus: false
engineOilStatus: false
engineRuntime: {}
remoteControlAvailable: 1
valetParkingMode: 0
rsaStatus: 0
location:
coord:
lat: REMOVED
lon: REMOVED
alt: 90
type: 0
altdo: 0
head: 75
speed:
value: 0
unit: 1
accuracy:
hdop: 8
pdop: 14
syncDate:
utc: '20231206165449'
offset: -8
financed: true
financeRegistered: false
linkStatus: 0
rsaStatus: 0

Certainly "appears" like Kia is providing SoC directly - so my previous hypothesis appears incorrect.

batteryStatus:
stateOfCharge: 70
deliveryMode: 1
sleepMode: false

 

[Thomby]

Totally just a guess - as a doubt that Kia is providing the SoC% (state of charge) - but likely Kia is providing the DC Voltage.

Actually, the addon is receiving the data as a percent. I'll post the raw data it receives from the API below.

Is there a way to see the battery charge state/voltage, either from the in-car menu or the Kia Connect app? I'm not finding it anywhere but I also let my subscription lapse back to whatever the lightest one is, so might have to break out the multimeter.

 

[Thomby]

Just tested with a multimeter and I was getting about 12.2v, which I believe is 60% charge!

Now I'm wondering if it's all the 5-7 mile trips around town (usually with a 5min warmup), or if the car is selectively disengaging the alternator until it hits a certain state of charge.

 

[D.J.]

Is there a way to see the battery charge state/voltage, either from the in-car menu or the Kia Connect app? I'm not finding it anywhere but I also let my subscription lapse back to whatever the lightest one is, so might have to break out the multimeter.

No.
And a multimeter won't tell you what the car thinks the SoC is.

Next time I am at my buddies shop - I will see if his Autel Maxi can read current SoC (It probably can)

 

[Ah GetFd]

I don't think that battery state of charge is a condition for eco-coasting.





When certain conditions are met, the engine is automatically decoupled from the transmission while the shift lever is remained in D (Drive). In this ECO Coasting mode, the engine stays at idling speed to reduce fuel consumption and increase coasting distance. The engine is automatically coupled back again when ECO Coasting deactivation conditions are met. Please refer to ECO Coasting activation and deactivation conditions.

The Eco-Coasting system setting​

The Eco-Coasting system activates if select the Eco-Coasting system from AVN: "Setting Vehicle Coasting" (Please refer to AVN manual for more details.) When the Eco-Coasting system is activated, the message "Coasting" appears at the top center of the cluster.

CAUTION

• If the accelerator pedal is pressed quickly for accelerating with the Eco-Coasting system in operation, acceleration may occur after the engagement of the clutch inside the transmission. In turn, the driver may continue to feel acceleration even after the system is turned off.
• Driving with the Eco-Coasting system off may be required in some cases since the engine brake is not applied while the Eco-Coasting system is in operation.
• Operation the AVN screen to activate or deactivate Eco- Coasting system while driving may be dangerous as the driver's attention is dispersed.

Eco-Coasting operation conditions​

The Eco-Coasting system is activated when the accelerator pedal is depressed and released under the following conditions.

• When the driving mode is ECO mode.
• When driver acceleration is SMART ECO in SMART mode.
• When the shift lever is in the D (Drive) position.
• When Cruise Control/Smart Cruise Control button is OFF.
• The accelerator or brake pedal is not depressed.
• When the vehicle speed is within the range of 55 km/h (34 mph) to 160 km/h (100 mph).
• If the road gradient is within the range of -5% to +5%.
• In SMART mode, if the distance between the vehicle ahead and the relative speed is within a certain range (if the Smart Cruise system is equipped)

❈ If the front radar for smart cruise system cannot operate normally, the inter-vehicle distance and relative speed condition are automatically ignored.

❈ The Eco-Coasting system works after the engine is turned on, the transmission is warmed up, and the engine sensor selfdiagnosis is completed after starting.

❈ Depending on the driving situation, Eco-Coasting operation may be temporarily delayed even if the above conditions are met.

The Eco-Coasting system release conditions​

The Eco-Coasting system will be automatically released when the following conditions are met.

• When the drive mode is COMFORT or SPORT mode.
• In SMART mode, when driver acceleration is SMART COMFORT or SMART SPORT.
• When using the paddle shift of the steering wheel.
• When the Cruise Control/Smart Cruise Control button is on (The
  
  /CRUISE indicator is on.).
• When pressing the accelerator pedal or brake pedal.
• When the vehicle speed is outside the rage of 55 km/h (34 mph) to 160 km/h (100 mph).
• Road inclination is less than -5% or exceeds +5%.
• In SMART mode, if the headway distance to the vehicle ahead is too close of the relative speed changes momentarily (if the smart cruise control system is equipped)
• If lane change is predicated in SMART mode (LKA (Lane Keep Assist) warning by turn signal lamp operation or steering wheel).

❈ It is recommended to turn off the Eco-Coasting system in the driving condition where frequent acceleration or deceleration is repeated.

Change the drive mode to COMFORT or SPORT mode, or disable Eco-Coasting mode on the AVN screen.

I think you pretty much covered it.

These cars are clever and trying to second guess why they are faulty when they are really are not faulty at all just wastes a lot of your time.

 

[Volfy]

Now I'm wondering if it's all the 5-7 mile trips around town (usually with a 5min warmup), or if the car is selectively disengaging the alternator until it hits a certain state of charge.

Get one of these and wonder no more.

 

[Thomby]

No.
And a multimeter won't tell you what the car thinks the SoC is.

Next time I am at my buddies shop - I will see if his Autel Maxi can read current SoC (It probably can)

Unless the Stinger has some kind of exotic battery chemistry, the open circuit voltage should indicate charge level, no?

Get one of these and wonder no more.
View attachment 83606

I just put my multimeter across the charge points under the hood. 12.2v before and 12.4v after a half hour drive (60 and 80% I believe). Figure I'll top it off and then see how it fares the next few days.

 

[D.J.]

Unless the Stinger has some kind of exotic battery chemistry, the open circuit voltage should indicate charge level, no?

Well... As it relates to the ISG functional, or the eco coast functionality... How would the car know the SoC, while the engine is running and the alternator is charging....

The open circuit voltage should indicate the SoC, but after driving X minutes, our cars know the SoC to allow or disallow the ISG functionality.

I don't believe the "while parked and engine off" SoC is very important to the ISG functionality.

 

[D.J.]

I just put my multimeter across the charge points under the hood. 12.2v before and 12.4v after a half hour drive (60 and 80% I believe). Figure I'll top it off and then see how it fares the next few days.

Will that 12.4v drop to 12.2 after a few hours of rest?

I drove home recently and left my ODBII BT adapter connected, and my voltage settled to 12.1v after some time.

Coolant temp in red
Voltage in green
Engine off when coolant temp stops, and voltage drops from 14.5


25 minutes after shutting off, voltage was 12.3v
12.1v seems to be my resting voltage at this temperature (about 0 °C)

 

[Thomby]

Will that 12.4v drop to 12.2 after a few hours of rest?

I drove home recently and left my ODBII BT adapter connected, and my voltage settled to 12.1v after some time.

Coolant temp in red
Voltage in green
Engine off when coolant temp stops, and voltage drops from 14.5

25 minutes after shutting off, voltage was 12.3v
12.1v seems to be my resting voltage at this temperature (about 0 °C)

I topped it off with a charger this evening and will check it again in the morning and after I run some errands. One other things I considered is that I tend to leave it unlocked in my garage (and ignore Kia Connect's harassment about it!). I read somewhere that modern cars need to be locked to go to "sleep" and not have a higher current draw, but I don't remember if that was specific to the Stinger, and would hope automakers have the good sense to make their cars go to sleep anyway after some interval to avoid discharging the battery...

12.3 and 12.1 seem very low, unless I'm out of date. I see 12.1v as being 50% charge for a normal lead acid battery.

 

[D.J.]

I topped it off with a charger this evening and will check it again in the morning and after I run some errands. One other things I considered is that I tend to leave it unlocked in my garage (and ignore Kia Connect's harassment about it!). I read somewhere that modern cars need to be locked to go to "sleep" and not have a higher current draw, but I don't remember if that was specific to the Stinger, and would hope automakers have the good sense to make their cars go to sleep anyway after some interval to avoid discharging the battery...

12.3 and 12.1 seem very low, unless I'm out of date. I see 12.1v as being 50% charge for a normal lead acid battery.

There is certainly a temperature component...

It's -3°C (26.6°F) where I'm at.

 

[Scorpion24]

Mine never works. I drive mostly short trips.
It will usually start working after a long commute. Maybe an hour or two of driving.

 

[rtv900]

can anyone confirm if the coasting feature actually saves a meaningful amount of fuel?
I've never used it and figured it would only increase mileage by 0.5 mpg or something

 

[D.J.]

can anyone confirm if the coasting feature actually saves a meaningful amount of fuel?
I've never used it and figured it would only increase mileage by 0.5 mpg or something

Probably much less than that.

I don't have it on my 2018, so I can't confirm, can only offer my guess.

 

[bfglitch]

It probably doesn't really help a whole lot. I definitely notice less drag when it is decoupled but I can't really see it helping much unless you do a lot of slight downhill driving. That's really the only time I see much of a benefit as I won't have to slightly press the gas in order to keep my speed up. Honestly I'm probably going to wind up disabling the feature as I'm more concerned about possible wear/tear from it engaging and disengaging often.

 

[Thomby]

There is certainly a temperature component...

It's -3°C (26.6°F) where I'm at.

Yeah it dropped about 25 degrees overnight here, and I measured 12.3v this morning. Ran some errands, maybe 15-20 miles of driving with two stops/restarts, and measured 12.35v when I got home.

Mine never works. I drive mostly short trips.
It will usually start working after a long commute. Maybe an hour or two of driving.

This would also point to it being a voltage/charge thing. I do some decent 30-45min drives which you'd think would be plenty to top it off.

I've never had anything that sounded like a slow or weak start, so wonder if the Stinger's voltage is supposed to wander a bit. But that runs counter to everything I know about lead acid batteries...

 

[Thomby]

can anyone confirm if the coasting feature actually saves a meaningful amount of fuel?

Probably much less than that.

It probably doesn't really help a whole lot. I definitely notice less drag when it is decoupled but I can't really see it helping much unless you do a lot of slight downhill driving.

It started more as a curiosity than a mileage concern. My last car was stick so as soon as it started cruising I'd notice the familiar feel. But now that it's led to questionable battery voltage I've headed down that rabbit hole...

 

[Volfy]

can anyone confirm if the coasting feature actually saves a meaningful amount of fuel?
I've never used it and figured it would only increase mileage by 0.5 mpg or something

Highly depends on the terrain and how the car is driven. Also, coasting doesn't always save fuel. Under some conditions, it could end up burning more fuel than if the tranny stays in gear, allowing for engine brake and the ECU to shut off fuel entirely.

 

[Buzzman12]

Ok, so I apologize in advance, but as a relatively new Stinger owner, this thread is the first I've heard of this coasting mode thing.
Is this something that the car does on it's own, or is it something I have to program or set up?
I looked through my owners manual and can't find any information on it. Maybe I'm not looking in the right place. IDK.
Thx.

 

[Ah GetFd]

Ok, so I apologize in advance, but as a relatively new Stinger owner, this thread is the first I've heard of this coasting mode thing.
Is this something that the car does on it's own, or is it something I have to program or set up?
I looked through my owners manual and can't find any information on it. Maybe I'm not looking in the right place. IDK.
Thx.

It may depend on the model you have. I am not familiar with the features of earlier models but the My23 Stinger has 5 settable drive modes by the knob in the centre console. 1. Smart. 2, Eco, 3. Comfort. 5. Sport. 5 Custom.

In Eco, the engine will disconnect from the transmission when there is no load, and "coasting" will appear in the centre display saving fuel. Essentially bringing the engine back to idle on a freeway for example. As soon as there is any change in braking, accelerating the transmission reconnects. You will feel it as slight nudge when it reconnects.