SRT Performance Pages (2015-2016) - UConnect ReCoding Thoughts

[jroyk]

Interesting. My ‘16 M6 gauges agree like @BULL ’s, but the IAT always reads higher than I/C Coolant.

 

[fumanchu182]

It's been several years trying to figure this out but I was able to finally track down the issue with the Performance Pages Gauge 2 Dashboard swap.

I've got the coding problem figured out. The challenge is getting the UConnect software repackaged properly so the car will authenticate/take the update.

UConnect Versions
18.45.01 - September 24, 2019
17.43.01 - January 12, 2018
17.11.07 - April 5, 2017

--- This is when the Hellcat SRT Performance Pages Gauge 2 readings between I/C Coolant and Intake Air Temp swapped ---

16.16.13 - April 13, 2016
15.17.05 - April 24, 2015

Issue (2015-2016 Hellcats)
UConnect 17.11.07 introduced a change in how the Performance Pages resolved sensor data. The updated code mapped the Performance Pages’ temperature gauges to incorrect sensor URLs (e.g., "LTR_Coolant" and "IntkAirTempIntrClr") referenced in the I/C Coolant and Intake Air Temperature Dashboard Views, resulting in a mismatch between the displayed labels and the underlying CAN signals.

The instrument cluster was unaffected because it continued to reference the correct CAN sensor IDs. This is why cluster readings for I/C Coolant Temp and Intake Air Temp remained correct, while the Performance Pages began showing cross-mapped or inverted values starting in 17.11.07 and all later releases.

View attachment 174228

Potential Fix
Dodge needs to patch the Performance Pages App for 2015-2016 Hellcats with the following corrections to Gauges 2 Dashboard files.

File Location 2015 (LA Challenger):
UConnect 18.45.01 version > swdl.upd > secondary.iso > usr > share > xlets > kim_packages > KIM18 > xlets > 7DEC7834-535D-47B5-BD33-695477EDCD57 > prog > jars > GSkills_MY15_LSeries_v02.01.01_FIT.jar

File Location 2016 (LA Challenger, LD Charger):
UConnect 18.45.01 version > swdl.upd > secondary.iso > usr > share > xlets > kim_packages > KIM22 > xlets > 7DEC7834-535D-47B5-BD33-695477EDCD57 > prog > jars > GSkills_MY15_LSeries_v02.01.01_FIT.jar

Current in 18.45.01
IntakeAirTempDashboardView.class -> IntakeAirTempICSensorModel.getInstance()
CoolantTempICDashBoardView.class -> CoolantTempICSensorModel.getInstance()

Software Patch Needed (2015-2016 Hellcats only)
IntakeAirTempDashboardView.class -> CoolantTempICSensorModel.getInstance()
CoolantTempICDashBoardView.class -> IntakeAirTempICSensorModel.getInstance()

This is because the current CoolantTemplCSensorModel references "LTR_Coolant" and IntakeAirTempICSensorModel references "IntkAirTempIntrClr". When the wiring was changed from MAF to IAT sensor in 2017, the signal referenced by "LTR_Coolant" is now the post-intercooler charge air temperature, and the signal referenced by "IntkAirTempIntrClr" is the coolant temperature flowing through the low-temp coolant circuit and intercooler pump.

View attachment 174227

I reverse engineered the firmware. The package is signed with a key after the security incidents at Blackhat. The key is not publicly known.

 

[MikeD1]

Similarly, 2015 Challenger Hellcat with 18.45.01 reinstalled.

Also, nice catch @MikeD1 on the Gauges 1 page. Looks like we have Trans Temp sqweezed in there.

Yes, mine looks just like yours !

 

[rayzazoo]

Yes, mine looks just like yours !

Figured out the Guage 1 page difference.

Autos display Transmission Temperature, Manuals do not.


if (VehicleTrimEnum.HELLCAT == vehTrim) {
this._viewContainerList.add(OilTempDashboardView.getInstance());
this._viewContainerList.add(OilPressureDashboardView.getInstance());
this._viewContainerList.add(CoolantTempDashboardView.getInstance());
this._viewContainerList.add(BatteryDashboardView.getInstance());
if (TransmissionTypeEnum.AUTO == transmissionType) {
this._viewContainerList.add(TransTempDashboardView.getInstance());
}

 

[16GoManGoHC2]

I don't believe this is an issue with M6s???

My 2016 M6 Hellcat reads correctly. I want to change to a 2017 screen which has CarPlay, but I’m worried about losing my intercooler temp reading. ??

 

[Unholy707]

Get this - m6, 2015. My gauges displayed correctly. Converted the car to A8 and guess what? The gauges are flipped. It has to be something in the A8 config

 

[BULL]

My 2016 M6 Hellcat rest correctly. I want to change to a 2017 screen which has CarPlay, but I’m worried about losing my intercooler temp reading. ??

Check with Ray, but I think somehow this is only an issue on 15/16s

 

[16GoManGoHC2]

Check with Ray, but I think somehow this is only an issue on 15/16s

Mine reads correctly now, I don’t want to mess it up changing to a 2017 screen. That’s my concern.
I need accurate gauge readings more than CarPlay but I would like a faster screen.

 

[MikeD1]

Check with Ray, but I think somehow this is only an issue on 15/16s

Mine reads correctly now, I don’t want to mess it up changing to a 2017 screen. That’s my concern.
I need accurate gauge readings more than CarPlay but I would like a faster screen.

Check with @Speedy!
As I recall when he swapped his out on his '16, the flipped gauge thing 'followed' him to the new screen & 1 stopped displaying all together.

 

[BULL]

Mine reads correctly now, I don’t want to mess it up changing to a 2017 screen. That’s my concern.
I need accurate gauge readings more than CarPlay but I would like a faster screen.

I seem to recall that for most of the "original" years, they kept advertising faster Uconnect radios each year? Maybe you want to go with something like a 2022 radio?

 

[rayzazoo]

Mine reads correctly now, I don’t want to mess it up changing to a 2017 screen. That’s my concern.
I need accurate gauge readings more than CarPlay but I would like a faster screen.

In @Speedy! video, I/C Coolant temp didn't come up in the new Performance Pages.

 

[06SRT10NR]

I seem to recall that for most of the "original" years, they kept advertising faster Uconnect radios each year? Maybe you want to go with something like a 2022 radio?

you'd likely also have to take into account that '15 and '16 have a different center stack layout than '18 and newer cars. likely to have compatibility issues with the later radios, similar to issues between an '18 Demon with the crate center stack installed and the '21+ radios

 

[16GoManGoHC2]

I seem to recall that for most of the "original" years, they kept advertising faster Uconnect radios each year? Maybe you want to go with something like a 2022 radio?

you'd likely also have to take into account that '15 and '16 have a different center stack layout than '18 and newer cars. likely to have compatibility issues with the later radios, similar to issues between an '18 Demon with the crate center stack installed and the '21+ radios

This is why I chose a 2017 unit, supposedly everything works with them in a 2016 swap???

 

[1971demon]

Ok, I want to confirm this, but I also want to make 100+% sure I understand what you've all been saying this whole time...

I want to confirm this because having never seen it, it is foreign to my understanding, so, you know, certainly is a fickle thing...


My center display gauges do in fact match the gauges in the Uconnect, and what you're saying is that the center driver's display has gauges swapped, correct? (I know, but I'm just being as clear as I possibly can be, being that MINE DO MATCH...)

My HC is a MY2016 M6 Challenger with Uconnect 18.45.01


View attachment 174315



View attachment 174316

Glad I don't pay attention to that kinda stuff...