Tire size change (alfaobd) now bunch of codes/lights wont go away

[damonb]

I have a 2021 1500 Laramie with adaptive cruise, air suspension, etc. I went to change tire size and followed the AlfaOBD process of setting the circumference in 2 locations of the BCM and then going through the ABS initialization process. I try to reset the codes, but when I turn the key off and back on to do the rolls test reset as directed, the codes are still there. I have set tire size back to stock and kept trying the same ABS process with no luck. Someone please help :-(

The following codes are still there:
C2212
U05BF
C10D0

Lights showing on dash include what looks like Park brake "((P))" but with an "!" next to it. Yes the park brake works just fine
No FCW available warning
No Cruise control available warning
Some kinda light with a truck and "!" next to it.

 

[TechDaddy3x]

I have a 2021 1500 Laramie with adaptive cruise, air suspension, etc. I went to change tire size and followed the AlfaOBD process of setting the circumference in 2 locations of the BCM and then going through the ABS initialization process. I try to reset the codes, but when I turn the key off and back on to do the rolls test reset as directed, the codes are still there. I have set tire size back to stock and kept trying the same ABS process with no luck. Someone please help :-(

The following codes are still there:
C2212
U05BF
C10D0

Lights showing on dash include what looks like Park brake "((P))" but with an "!" next to it. Yes the park brake works just fine
No FCW available warning
No Cruise control available warning
Some kinda light with a truck and "!" next to it.
View attachment 82764

Did you ever get this figured out? Got a similar set up i am thinking of how to change tire size

 

[wvinson]

Why all this just for a tire size change?

 

[TechDaddy3x]

Why all this just for a tire size change?

Accurate range. Speedo and mileage etc

 

[wvinson]

I figured -- just changed mine to 305/45/22 and not really worried about it. I think it's just 1 mph

 

[ToeKnee]

Hmm that’s strange I never had any problems when I put on new wheels and tires.

 

[St-na]

I have a 2021 1500 Laramie with adaptive cruise, air suspension, etc. I went to change tire size and followed the AlfaOBD process of setting the circumference in 2 locations of the BCM and then going through the ABS initialization process. I try to reset the codes, but when I turn the key off and back on to do the rolls test reset as directed, the codes are still there. I have set tire size back to stock and kept trying the same ABS process with no luck. Someone please help :-(

The following codes are still there:
C2212
U05BF
C10D0

Lights showing on dash include what looks like Park brake "((P))" but with an "!" next to it. Yes the park brake works just fine
No FCW available warning
No Cruise control available warning
Some kinda light with a truck and "!" next to it.
View attachment 82764

How did You solve this issue? I can't clear C10D0.

 

[Ibanez540r]

How did You solve this issue? I can't clear C10D0.

Same! Any resolution? Or does anyone know how to initialize or reset the parking brake in AlphaOBD?

 

[Mountain Whiskey]

Man, my Tazer worked with no complicated codes, didn't throw any warning lights, nothing. Just plugged it up, set the size I wanted and hit reboot. Done.

 

[djevox]

This is why you take a back up of your settings and restore if you have issues. If you inadvertently change a value without noticing (which is easy to do), you can get back to a clean configuration then attempt the change again.

I think the OP’s main issue was listening to REM. I think the truck Rebel-led against it.

 

[Daverous]

Anyone have a documented fix?

 

[Mountain Whiskey]

Anyone have a documented fix?

Yes, just use the Tazer instead and avoid all the hassle.

 

[Daverous]

Quick update for those that get stuck in this loop. This process worked for me, and I have everything cleared and was able to update the size a third time without issues. I cannot guarantee these steps will work for everyone, or that I made all the correct changes, but it IS working for me and was repeatable.

All steps through AlfaOBD:

ABS>DT 2019+> ECS In Plant Mode> Disable
ABS>DT 2019+ > EPB In Plant Mode> Disable
BCM> MY2020>Chassis- Electonic Parking Brake> Yes
ABS > DT 2019> Service Procedures > Assembly Check

I have zero idea why my BCM and ABS system set those parameters differently after the process. I was only able to find it due to saved logs I had. Regardless, it worked. I cleared all faults during the process as well and they have not returned.

Hope this helps someone that runs into it and finds this like I did.

 

[Idahoktm]

You don't need that overpriced Tazer. Just follow the steps in this video.

AlfaOBD

Care to post up screenshots of the performance and off-road page? I think this is most of them, but I noticed a "next" page in the performance gauges page that I didn't scroll to.

5thgenrams.com

 

[Chicotunner07]

Quick update for those that get stuck in this loop. This process worked for me, and I have everything cleared and was able to update the size a third time without issues. I cannot guarantee these steps will work for everyone, or that I made all the correct changes, but it IS working for me and was repeatable.

All steps through AlfaOBD:

ABS>DT 2019+> ECS In Plant Mode> Disable
ABS>DT 2019+ > EPB In Plant Mode> Disable
BCM> MY2020>Chassis- Electonic Parking Brake> Yes
ABS > DT 2019> Service Procedures > Assembly Check

I have zero idea why my BCM and ABS system set those parameters differently after the process. I was only able to find it due to saved logs I had. Regardless, it worked. I cleared all faults during the process as well and they have not returned.

Hope this helps someone that runs into it and finds this like I did.

Thank you so much for posting this! it cleared all of the lights from my 2019 Rebel!, however after 50 light free miles, ECS light, CEL light, and AUTO Stop Start lights came back on, have you had any issues with the lights coming back on?

 

[Daverous]

I haven't. Maybe try running the steps again. Perhaps it didn't save a portion on the bcm

 

[DaBoone37]

Quick update for those that get stuck in this loop. This process worked for me, and I have everything cleared and was able to update the size a third time without issues. I cannot guarantee these steps will work for everyone, or that I made all the correct changes, but it IS working for me and was repeatable.

All steps through AlfaOBD:

ABS>DT 2019+> ECS In Plant Mode> Disable
ABS>DT 2019+ > EPB In Plant Mode> Disable
BCM> MY2020>Chassis- Electonic Parking Brake> Yes
ABS > DT 2019> Service Procedures > Assembly Check

I have zero idea why my BCM and ABS system set those parameters differently after the process. I was only able to find it due to saved logs I had. Regardless, it worked. I cleared all faults during the process as well and they have not returned.

Hope this helps someone that runs into it and finds this like I did.

Great stuff here. A few questions: Did you do these in this order? Did you cycle the engine in-between any of them? Did you wait between any of them?

 

[Daverous]

That order, didn’t cycle, and didn’t wait.

Also, if you have access to an iPhone and feel like dropping yet another 20 bucks Jscan will set the size and clear the issue as well.

 

[DaBoone37]

That order, didn’t cycle, and didn’t wait.

Also, if you have access to an iPhone and feel like dropping yet another 20 bucks Jscan will set the size and clear the issue as well.

$20 would be a deal if it's a simple solution to clear all the issues I have. The dealer will be $150 or I've got to research for hours of time I don't really have. Could you elaborate on how and why it can fix it but Alfa is such a pita?

 

[Jedi9]

I used Jscan because I already had it for my Jeep. Set size, turned off shut door 5 min and it took. Went down the road with speedometer app and tweaked it one more time and speedometer is perfect. Getting the speedometer right is not the full benefit of the program, it changes shift points in the transmission to compensate for the sizing differences. You will see a big difference in the way it drives. For a manual transmission all you are doing is getting the speedo and odometer correct. for me on atturro tral blade xps 295/60/20 the setting was 34"