So after searching through the forum pages I've seen where others have had similar electronic issues that I am experiencing and a BCM reflash seems to be the first step. So I tried calling my local dealership Service Department to see about having the BCM reflashed. They told me they were unable to do this???? Did I not word this right when asking? Any idea on what I should do next. I live in the Raleigh NC area.
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BCM Reflash/Reset
- Thread starter Cksutler
- Start date
You can not just request procedures to be done under warranty. You can relay symptoms and hope that they do what you want. Not sure what you would say is wrong for them to lookup to see if updated BCM firmware is available and would solve the problem. I've found on a number of occasions that pulling the negative terminal of the battery for a few minutes will reboot all modules and often cure any problems.
What year is your car and what is your BCM doing that's problematic?
What year is your car and what is your BCM doing that's problematic?
Thread Starter
#3
Its a 2020 so out of warranty. It started with no longer connecting to wifi to update and GPS no longer tracking. Sometimes the center entertainment console will lock up and do nothing and stop playing music while driving. Only the driver side handle will lock/unlock the doors. The driver side heated seat has stopped working which a lot of others have complained about but not worried about that as much but still like things to work and not be broken. But recently the biggest issue now is none of the electric buttons work from the outside or remote, I open the door manually and the tones sound like the battery is dead and the truck will not start. Soon after the alarm will start to sound and I am unable to stop it from happening. Eventually the alarm will stop and I can go to the back tailgate, open, and then the truck will start again.
I have tried disconnecting the battery for a bit and that did not solve anything. I replaced the battery over the summer and that did not change anything either. I'm not sure what else to do.
I have tried disconnecting the battery for a bit and that did not solve anything. I replaced the battery over the summer and that did not change anything either. I'm not sure what else to do.
Those are a lot of different modules. I can tell you some may have been corrected in firmware updates but others, like the seat no longer heating, just sound like they are broken. Sounds like also you have electrical gremlins that have nothing to do with firmware updates. There were some early 2020s that had bad grounds. Not sure what advice to give you... if it were me, I trade in the car and get a new ST. Seems like a common path for many 2020 owners. I thankfully had some quirks corrected with firmware updates (DIY) and the car is finally worry free.
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Not sure if this is still relevant, but you can reset your BCM by turning your vehicle to auxiliary, with lights on, or on automatic, flash your high beams 5 times and pump the brakes 3 times and wait for the battery icon on the dash to blink. This works on my 2021 ST. Unfortunately I have to do it every 2 months or so
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