Fried BCM, how to get data out?

[GlobetrotterV8]

Hi, I am the owner of a 2019 RAM 1500 Sport with 5.7 V8 Hemi. After I bought it new I had it lifted 5", put 35" wheels on 20x10 rims and had my ECU altered so the 4 Cylinders don't shut off anymore, changed the throttle response and took out the Limited Max speed. The Max speed is now 140mph but doing that on the 35" tires is a bit tricky. I cut out the giant oem mufler and installed a outlaw mufler from Flowmaster. Currently it has 52000 miles and I had some issues with the truck. I had the windshield tinted and that damaged the BCM. Regularly the dash showed me there was no BUS working in the car. I can tell you doing 85 mph in heavy traffic in the rain and than losing wipers, indicators and blower is no fun. In many occasions I couldn't even switch the car off or lock it. Now I bought a second hand BCM on ebay from a 2021 RAM 1500 and still waiting for delivery. I want to program the "new" second hand BCM with an OBD dongle using the Alpha OBD scan app. I also got the splittercable with the 8 pin and 12 pin plugs but I can't seem to locate where to attach them under the dash. Did anyone use these? Also the pushbutton for ACC and Start doesn't work so i guess the old BCM is fried or a fuse or relais died on me. Anybody has experienced this too? I need to copy the data off the sitting BCM and past it to the "new" one.
Worst case, I have to crack the housing of the BCM and see if there's any visible damage on the mainboard and replace some electronic components to get it working again.

 

[vincentw56]

Hi, I am the owner of a 2019 RAM 1500 Sport with 5.7 V8 Hemi. After I bought it new I had it lifted 5", put 35" wheels on 20x10 rims and had my ECU altered so the 4 Cylinders don't shut off anymore, changed the throttle response and took out the Limited Max speed. The Max speed is now 140mph but doing that on the 35" tires is a bit tricky. I cut out the giant oem mufler and installed a outlaw mufler from Flowmaster. Currently it has 52000 miles and I had some issues with the truck. I had the windshield tinted and that damaged the BCM. Regularly the dash showed me there was no BUS working in the car. I can tell you doing 85 mph in heavy traffic in the rain and than losing wipers, indicators and blower is no fun. In many occasions I couldn't even switch the car off or lock it. Now I bought a second hand BCM on ebay from a 2021 RAM 1500 and still waiting for delivery. I want to program the "new" second hand BCM with an OBD dongle using the Alpha OBD scan app. I also got the splittercable with the 8 pin and 12 pin plugs but I can't seem to locate where to attach them under the dash. Did anyone use these? Also the pushbutton for ACC and Start doesn't work so i guess the old BCM is fried or a fuse or relais died on me. Anybody has experienced this too? I need to copy the data off the sitting BCM and past it to the "new" one.
Worst case, I have to crack the housing of the BCM and see if there's any visible damage on the mainboard and replace some electronic components to get it working again.

You can't program a used BCM with AlfaOBD to work in your vehicle. You will need a dealer to do it or someone with the right software tools to do it. You can find the other info on using the SGW bypass on here using search. There are 2 connections under the dash on the left hand side that you unplug and plug this into.

 

[GlobetrotterV8]

You can't program a used BCM with AlfaOBD to work in your vehicle. You will need a dealer to do it or someone with the right software tools to do it. You can find the other info on using the SGW bypass on here using search. There are 2 connections under the dash on the left hand side that you unplug and plug this into.

Thank you for your reply. I'm not saying you might be wrong, but what about this?

 

[vincentw56]

Thank you for your reply. I'm not saying you might be wrong, but what about this?

Did you look the vehicle year in the YouTube video? There are differences between 4th gen and 5th gen. And did you watch all 3 videos? Also, what he is doing, isn't the same as what you are asking.

 

[GlobetrotterV8]

Yes, I took that in account. The BCM can be used on multiple generations of trucks and what I learned is that after 2016 Stellantis blocked acces through the OBD port. The solution to that is using the split harness or buy a prescription that gives acces.

 

[Jimmy07]

Yes, I took that in account. The BCM can be used on multiple generations of trucks and what I learned is that after 2016 Stellantis blocked acces through the OBD port. The solution to that is using the split harness or buy a prescription that gives acces.

You can’t program a used BCM to a 2019+ 5th gen Ram (trust me, I’ve tried every possible way for about 3 years straight), they just aren’t like the 4th gens. You also can’t even program a new BCM to your truck unless you have the dealer do it, or you have an aftermarket witech account with NASTF credentials.

 

[GlobetrotterV8]

Ok, thanks for your feedback. I will post after I have the donor BCM how things work out, meanwhile I will look for a specialist that have access to the Stellantis programming software and tools and keep them on stand-by. That will probably save me a lot of hassle and frustration. Sharing your experiences is much appreciated.

 

[HSKR R/T]

Hi, I am the owner of a 2019 RAM 1500 Sport with 5.7 V8 Hemi. After I bought it new I had it lifted 5", put 35" wheels on 20x10 rims and had my ECU altered so the 4 Cylinders don't shut off anymore, changed the throttle response and took out the Limited Max speed. The Max speed is now 140mph but doing that on the 35" tires is a bit tricky. I cut out the giant oem mufler and installed a outlaw mufler from Flowmaster. Currently it has 52000 miles and I had some issues with the truck. I had the windshield tinted and that damaged the BCM. Regularly the dash showed me there was no BUS working in the car. I can tell you doing 85 mph in heavy traffic in the rain and than losing wipers, indicators and blower is no fun. In many occasions I couldn't even switch the car off or lock it. Now I bought a second hand BCM on ebay from a 2021 RAM 1500 and still waiting for delivery. I want to program the "new" second hand BCM with an OBD dongle using the Alpha OBD scan app. I also got the splittercable with the 8 pin and 12 pin plugs but I can't seem to locate where to attach them under the dash. Did anyone use these? Also the pushbutton for ACC and Start doesn't work so i guess the old BCM is fried or a fuse or relais died on me. Anybody has experienced this too? I need to copy the data off the sitting BCM and past it to the "new" one.
Worst case, I have to crack the housing of the BCM and see if there's any visible damage on the mainboard and replace some electronic components to get it working again.

Tinting your windshield took out your BCM. A quality time shop would have known the risk and taken dlsteps to prevent it from happening. And, as your already figured out, you can't do it without getting dealer involved. That is the specialist you need. Not Jim Bob down the street.

 

[GlobetrotterV8]

Well maybe that wasn't clear but I'm living in The Netherlands and the dealership you mentioned is non existing here. Grey import is bringing them into the Country and there are garages that have some knowledge about the RAM trucks, but specialists are very difficult to find or non-existent. Since it's mandatory to have an sophisticated alarmsystem by the insurance companies the self proclaimed dealers are lightning quick to point towards the alarmsystem if any electronic issues come up. Which happened in my situation and after the technicians from the Defa alarmsystem made it 100% clear that it was the car and not their alarm causing the issues it was two years later after it was imminent to me that the BCM was fudched and the window tint was how that got messed up. I spend way over 100k euro's on my pick-up so I need to get it fixed one way or the other. I'm a former car technician and know my way around with electronics so for me it was the way to go to fix this BCM. But I understand from you and other members on this forum it's almost impossible to DIY my way through this problem.

 

[Jimmy07]

meanwhile I will look for a specialist that have access to the Stellantis programming software and tools and keep them on stand-by.

I have all of those stellantis programming softwares and tools, that’s how I know it won’t work.
Like mentioned above, the specialist you need is either the dealer, or a locksmith with a witech 2 account.

 

[GlobetrotterV8]

Thanks for the info, I will check if they have before putting my BCM's in their care.

 

[Brutal_HO]

I have all of those stellantis programming softwares and tools, that’s how I know it won’t work.
Like mentioned above, the specialist you need is either the dealer, or a locksmith with a witech 2 account.

Would any Stellantis (say Fiat) dealer possibly be able to program the BCM to his truck?

Alternatively, are Euro locksmiths even eligible for NASTF?