Rleblancii

I think my car has gremlins 🤔 o appreciate any thoughts.
while driving back from Virginia my ESP inoperative message and also pre-safe inoperative. A few minutes later my some light would come on and go off intermittently. About thirty minutes later i stopped at a convenience store. When i started the car back up, the fan motor starts whirring and the cars throws 3 more codes, SRS malfunction, cruise control inoperative and brake, ABS/BAS/ESP inoperative.

I pulled over and disconnected the battery. Reconnected all lights out. Drove home home with no fan issue or l
Errors other than and and pre-safe. When i got i. The car this morning fan started back on high and other errors popped up again

What i have done:

Checked battery (good)
Checked fuses (none blow)

Has to be electrical i would think, but out of things to try.

cMazara

Alternator maybe.

First hook it up to a xendtry/das.. that will save you money and time finding the error.

bbirdwell

+1 ^

Rleblancii

​​​​​thank you for the input. Memorial day today so nothing open. Is there a way for me to check the alternator and also why would the battery be good if alternator not working. Doesn't the alternator keep the battery charged?

cMazara

That's why I said maybe. Lol
if the battery has charge then it's good, although idk if one thing is the charge and the other is if the battery itself is good or not regardless of the charge.
if it's a speed sensor then the ESP turns off the presafe, but why the lights be affected by that? Better hook a computer to it.

bbirdwell

Quick check of bus voltage here:

Rleblancii

Thanks for the suggestion. I will check that. Will it also indicate if alternator good or bad?

Rleblancii

Ok. I did the test car not on voltage12.5 turn car on and voltage goes up to 14.1 and stays there. does that mean the alternator is good? If so what else should i check?

Rleblancii

I took the car to the meachanic,. On top of the issues i mentioned, the car also will not allow anyone to connect to the OBDII, so they are not able to pull codes. Verified same issue with different shop.

Any thoughts on how all these could be related?

gafitanu

You have been told already to go to the dealer or an indie with a DAS/STAR diagnostic computer. You are wasting your time with the battery, alternator and mechanics trying to hook up their $20 OBDII. Post your location maybe a nearby member with STAR can help you.

Rleblancii

Cornelius, NC 28031

Rleblancii

That is a great suggestion. Thank you.

FCPEuro

Unfortunately, I see an ECM in your future.

--Kyle

Rleblancii

They found the issue the gateway module was corroded inside. We will see if it really fixed the problem in the next couple of driving days.

Thanks for everyone's help. Have to bring to dealership ped to get flashed.