ACC + ASS not available

[2021JeepGladiator]

Hi all,
Some weeks ago I had the auto Start and Stop going not available. Apparently the issue was the auxiliary battery. The Glady is 2021 and was never replaced.

I went ahead and replaced both auxiliary and main battery. Issue solved.

Today I received the ACC not available. Checked the windshield and is all clean. I tried the "master reset"....disconnect the negative for 30 minutes but nothing changed. And now I'm also receiving again the start and stop not available.

Have anybody had this issue before?
I'm afraid there is some problem with the alternator...but that either work or not work...

Thanks for the input!!

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[Lost1wing]

You need to look for a code, or you will just get guesses. How did you disconnect the ground? Did you remove the fender ground( from either end) or did you pull the terminal off of the main negative post?

 

[2021JeepGladiator]

You need to look for a code, or you will just get guesses. How did you disconnect the ground? Did you remove the fender ground( from either end) or did you pull the terminal off of the main negative post?

I connected the flashcal+ but nothing, no code. I tried disconnecting first the ground, and the sensor wait 30 minutes and nothing. Then I disconnected the negative entirely, same nothing...

 

[Lost1wing]

I connected the flashcal+ but nothing, no code. I tried disconnecting first the ground, and the sensor wait 30 minutes and nothing. Then I disconnected the negative entirely, same nothing...

I connected the flashcal+ but nothing, no code. I tried disconnecting first the ground, and the sensor wait 30 minutes and nothing. Then I disconnected the negative entirely, same nothing...

I'm not familiar with Flash Cal tuners. It would need to read abs or even the bcm modules.

 

[2021JeepGladiator]

I think I erased the parameters when I reset the ABS...now need to be recalibrate...

 

[Lost1wing]

I connected the flashcal+ but nothing, no code. I tried disconnecting first the ground, and the sensor wait 30 minutes and nothing. Then I disconnected the negative entirely, same nothing...

I think I erased the parameters when I reset the ABS...now need to be recalibrate...

You were supposed to look for codes, not reset anything. If it didn't have a code, it didn't need to be reset. ABS should calibrate itself on a short drive. If it had a communication fault it could be related to ACC. You need a tool that can read all of the modules. Basic tools only scan engine codes and maybe ABS. You would need something to scan all modules. A transmission fault could disable ACC. You need to scan all modules. What can Flash Cal do?

I just looked up flashcal +.

It has ABS initialization.

I see what it does now. I don't see ACC, or transmission module capabilities. It also didn't say that it can read fault codes for ABS. It's more of a tuner than a scan tool. The interface is thru the BCM. Again, I'm not familiar with it, so I don't really know what it can do as for reading codes.

 

[ShadowsPapa]

Not all devices look for codes not stored, transient things and so on.
I don't rely on things like flashcal or tazer or whatever for real diagnosis - they are quite limited in that area.

I think I erased the parameters when I reset the ABS...now need to be recalibrate...

Why did you reset ABS?

 

[Lost1wing]

I mentioned ABS to him to see if it had any codes. An ACC module failure or power issue could give ABS a communication fault. Most people only have scan tools that can read engine codes and maybe ABS. I am not familiar with Flashcal+. Lucky for him Flashcal+ can do ABS initialization. I think after a reset it needs to be driven and the ABS light should go off if a successful test run.

 

[2021JeepGladiator]

You were supposed to look for codes, not reset anything. If it didn't have a code, it didn't need to be reset. ABS should calibrate itself on a short drive. If it had a communication fault it could be related to ACC. You need a tool that can read all of the modules. Basic tools only scan engine codes and maybe ABS. You would need something to scan all modules. A transmission fault could disable ACC. You need to scan all modules. What can Flash Cal do?

I just looked up flashcal +.

It has ABS initialization.

I see what it does now. I don't see ACC, or transmission module capabilities. It also didn't say that it can read fault codes for ABS. It's more of a tuner than a scan tool. The interface is thru the BCM. Again, I'm not familiar with it, so I don't really know what it can do as for reading codes.

You were supposed to look for codes, not reset anything. If it didn't have a code, it didn't need to be reset. ABS should calibrate itself on a short drive. If it had a communication fault it could be related to ACC. You need a tool that can read all of the modules. Basic tools only scan engine codes and maybe ABS. You would need something to scan all modules. A transmission fault could disable ACC. You need to scan all modules. What can Flash Cal do?

I just looked up flashcal +.

It has ABS initialization.

I see what it does now. I don't see ACC, or transmission module capabilities. It also didn't say that it can read fault codes for ABS. It's more of a tuner than a scan tool. The interface is thru the BCM. Again, I'm not familiar with it, so I don't really know what it can do as for reading codes.

I know...I had the finger itching...don't know why I initialized that...

It doesn't show any code, not even with the diagnosis from the workshop. I think only dealer have something for the ACC...at least for what I read online...

 

[ShadowsPapa]

I think only dealer have something for the ACC...at least for what I read online...

If that is off, any glass shop with a tablet or laptop and access can do it - they drive it after put into the calibrate mode - following the instructions on the screen.

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