Adding Adaptive Cruise Control

[AK103]

Yes, I’ve had this plugged in for over two months. I know for a fact it’s from a wrecked limited. I’m not sure why this particular module would have to be virgin either. Seems strange, but possible?

Here is my current status in the DASM:
ECU Qualification:
RLS: Not set
AHBM: Not set
HUM: Set
COM: Set
UAM: Set
Theft Deterrent Present: No
Power Locks Present: Yes
Ambient Lighting Present: No
Approach Lamps Present: No
Side Repeaters Present: No
UGDO Theft Disable Present: No
RKE Present: No
Front Fog Lights Present: No
Tip Start Present: No
Remote Start Present: No
Reprogramming Attempt Counter:
Number of Reprogramming Attempts - Block 1: 0
Max. Number of Reprogramming Attempts: Block 1: 1000
Number of Reprogramming Attempts - Block 2: 0
Max. Number of Reprogramming Attempts: Block 2: 1000
VIN Locked: Yes
In-Plant Status: Not active
Sensor Has Been Aligned: Yes
Response on Event - light activation state: Activated
Ignition Voltage: 11.90
FCW Selection: Fcw Near
Blindness Counter: 158
Bussed Outputs:
ACC Set Speed KPH: 0 km/h
ACC Set Speed MPH: 0 MPH
Requested Gear, Upper Limit: 0
HMI Screens: None
Forward collision warning error: FCW Error
Forward collision warning setting: Yes
ACC HMI Screen request: Yes
ACC On/Off Status: Off
Small graphic display: ACC Ready TG1
ACC stop commanded: No
ACC drive off commanded: No
Engine torque request maximum: No
ACC cruise control enabled: No
ACC engaged: No
Status Information DASM: No
Status Information DASM: No fault
Disable fuel shutoff: Yes
Brake jerk request: No
Brakes Pre-Fill Request: No
Assistance system display request (priority): No request
DAS request ID: No assistance system is braking
Forward collision warning status: Not active
Bussed Inputs:
System Voltage: 11.90 V
Averaged Ambient Temperature: -40.00 Deg.C
Vehicle speed: 0.00 km/h
Ignition Switch Status: RUN Position
PRND Status from Trans: Park
Cruise Control Cancel Switch: Not set
ACC Distance Decrease Switch: Not set
SCM Cruise Control Set/Accel Sw: Not set
SCM Cruise Control Coast/Set/Decel Sw: Not set
Cruise Control Resume Switch: Not set
SCM Cruise Control Implausible: Not set
SCM Cruise Control On/Off Sw: Not set
SCM ACC On/Off Sw: Not set
SCM ACC Distance Increase Sw: Not set
ACC Can Be Enabled per ESP: Set
Trans in Limp Home Mode: Not set
Engine Torque Enable Request AS: Enabled

I admire you for tackling this project.
You have way more patience than I do.

 

[Jimmy07]

Yes, I’ve had this plugged in for over two months. I know for a fact it’s from a wrecked limited. I’m not sure why this particular module would have to be virgin either. Seems strange, but possible?

Here is my current status in the DASM:
ECU Qualification:
RLS: Not set
AHBM: Not set
HUM: Set
COM: Set
UAM: Set
Theft Deterrent Present: No
Power Locks Present: Yes
Ambient Lighting Present: No
Approach Lamps Present: No
Side Repeaters Present: No
UGDO Theft Disable Present: No
RKE Present: No
Front Fog Lights Present: No
Tip Start Present: No
Remote Start Present: No
Reprogramming Attempt Counter:
Number of Reprogramming Attempts - Block 1: 0
Max. Number of Reprogramming Attempts: Block 1: 1000
Number of Reprogramming Attempts - Block 2: 0
Max. Number of Reprogramming Attempts: Block 2: 1000
VIN Locked: Yes
In-Plant Status: Not active
Sensor Has Been Aligned: Yes
Response on Event - light activation state: Activated
Ignition Voltage: 11.90
FCW Selection: Fcw Near
Blindness Counter: 158
Bussed Outputs:
ACC Set Speed KPH: 0 km/h
ACC Set Speed MPH: 0 MPH
Requested Gear, Upper Limit: 0
HMI Screens: None
Forward collision warning error: FCW Error
Forward collision warning setting: Yes
ACC HMI Screen request: Yes
ACC On/Off Status: Off
Small graphic display: ACC Ready TG1
ACC stop commanded: No
ACC drive off commanded: No
Engine torque request maximum: No
ACC cruise control enabled: No
ACC engaged: No
Status Information DASM: No
Status Information DASM: No fault
Disable fuel shutoff: Yes
Brake jerk request: No
Brakes Pre-Fill Request: No
Assistance system display request (priority): No request
DAS request ID: No assistance system is braking
Forward collision warning status: Not active
Bussed Inputs:
System Voltage: 11.90 V
Averaged Ambient Temperature: -40.00 Deg.C
Vehicle speed: 0.00 km/h
Ignition Switch Status: RUN Position
PRND Status from Trans: Park
Cruise Control Cancel Switch: Not set
ACC Distance Decrease Switch: Not set
SCM Cruise Control Set/Accel Sw: Not set
SCM Cruise Control Coast/Set/Decel Sw: Not set
Cruise Control Resume Switch: Not set
SCM Cruise Control Implausible: Not set
SCM Cruise Control On/Off Sw: Not set
SCM ACC On/Off Sw: Not set
SCM ACC Distance Increase Sw: Not set
ACC Can Be Enabled per ESP: Set
Trans in Limp Home Mode: Not set
Engine Torque Enable Request AS: Enabled

Needs to be a way to write your VIN to the DASM. Not sure if the dealer can do it. The current VIN and VIN lock is pretty damning.

 

[Jimmy07]

I just noticed you have VehConfig 3 ESCL system present set to YES. Did you change that to yes, or was it always like that. RAM hasn’t used an electronic steering column lock in 12+ years. Not sure what effect it would have...

 

[tdb0021]

Needs to be a way to write your VIN to the DASM. Not sure if the dealer can do it. The current VIN and VIN lock is pretty damning.

Either that or order a new DASM. $1000 for a new one is a tough gamble.

Seems like the last thing to rule out.

I changed that ESCL setting a few days ago because the configurations I read from other trucks had it enabled and I wasn’t sure if that played a part.

 

[tdb0021]

I admire you for tackling this project.
You have way more patience than I do.

If there’s a will there’s a way...

 

[Jimmy07]

I’d set it back to no. I’m comparing with a 2021 loaded Limited. Oh, and set VehConfig 7 Active Blind Spot Present back to no. That setting isn’t part of your blind spot detection system, and it’ll be sure we take any configuration mismatch errors off the table.
I’m gonna keep running though these logs.

 

[tdb0021]

I’d set it back to no. I’m comparing with a 2021 loaded Limited. Oh, and set VehConfig 7 Active Blind Spot Present back to no. That setting isn’t part of your blind spot detection system, and it’ll be sure we take any configuration mismatch errors off the table.
I’m gonna keep running though these logs.

I’ll make the changes now. I should also note I changed some PTS options to semi-automatic as well.

 

[Jimmy07]

I’ll make the changes now. I should also note I changed some PTS options to semi-automatic as well.

Those are the Parktronics sensors (park sense). Those shouldn’t interfere unless you have errors in your park assist module.

 

[tdb0021]

Got it. No errors in parking. Here is my BCM as it sits right now:

Lonestar BCM 11-21 8.21PM.txt

drive.google.com

 

[vincentw56]

Just curious, did adding the mirror camera enable auto brights? Also, what about the camera in the grill? Do you need that too? I'm very interested in this project.

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[tdb0021]

Just curious, did adding the mirror camera enable auto brights? Also, what about the camera in the grill? Do you need that too? I'm very interested in this project.

Sent from my SM-G988U using Tapatalk

The camera in the grill is not a part of the lane keep assist or the ACC. As far as i know it is only for surround view. The Module i added behind the rear view mirror is the DASM which is a Radar and Camera unit combined that does in fact control Auto high beams. I did enable this feature in alphaobd and i do get a "auto high beams enabled" message when my headlights come on but the high beams won't kick on. Since the DASM is reading an error any function it controls is disabled - so auto high beams are not working yet. There is a rear view mirror you can add that has a camera solely for high beams, i think it's been done quite often.

Eventually we'll figure out what's keeping everything from working. It's just a matter of time...and money.

 

[tdb0021]

Okay so I was able to find a DASM module on eBay that is claimed to be new and unopened that was half off the price of one from a dealer. We’ll see if that is the magic piece missing to get this working. I will update once I get it and install.

 

[Ramroader]

Hi there so glad I found this forum, this is my first post on this site. Just traded my 2018 ecodiesel on a 2020 ecodiesel longhorn. It has the ACC buttons on the steering wheel beside the regular cruise buttons and it has the camera in the rear view mirror but the ACC buttons do nothing. I talked to the dealer actually a couple of different dealers and they both said the truck didn't come with the option and can't be activated. They said it probably got the wrong steering wheel at the factory. This is driving me crazy because I really like the feature, we have it on the wife's CRV and it is very nice on long drives. How do you check to see if the ABS and HCU are right for ACC, also how do you do alfaobd ?

 

[tdb0021]

Hi there so glad I found this forum, this is my first post on this site. Just traded my 2018 ecodiesel on a 2020 ecodiesel longhorn. It has the ACC buttons on the steering wheel beside the regular cruise buttons and it has the camera in the rear view mirror but the ACC buttons do nothing. I talked to the dealer actually a couple of different dealers and they both said the truck didn't come with the option and can't be activated. They said it probably got the wrong steering wheel at the factory. This is driving me crazy because I really like the feature, we have it on the wife's CRV and it is very nice on long drives. How do you check to see if the ABS and HCU are right for ACC, also how do you do alfaobd ?

There is lots of good information on this site. If you want to dive into alphaobd, which is pretty much essential for any DIY project on your truck, head over to the alphaobd thread.
It's long, but you need to have a good grasp on what it is and how it works before you jump in head-first. It's a powerful tool but can also be dangerous and brick your truck if you don't know what you're doing. You can find it by searching and i think it's a sticky on the mods/accessories page.

As far as the adaptive cruise control goes, what does the camera behind your rear view look like? If it's about the size of a 3x5 note card then its the correct one.
If not, that would be the camera for the auto hi-beams. Chances are the ABS module and HCU are also the non-ACC versions as well. Here is what the camera behind your
rear-view should look like for ACC: https://www.ebay.com/itm/2019-Ram-1...e=STRK:MEBIDX:IT&_trksid=p2060353.m1438.l2649

 

[Ramroader]

Nope that does not look like my mirror camera, I guess I am out of luck was really hoping I could just play around with alphaobd and activate the ACC, not sure if I want to spend the money to make it work. Sounds like it involves a new windshield and mirror and the other modules, maybe if I break this windshield and then find used parts it wouldn't be to bad. Thanks for the info

 

[vincentw56]

Nope that does not look like my mirror camera, I guess I am out of luck was really hoping I could just play around with alphaobd and activate the ACC, not sure if I want to spend the money to make it work. Sounds like it involves a new windshield and mirror and the other modules, maybe if I break this windshield and then find used parts it wouldn't be to bad. Thanks for the info

I don't think it requires a new windshield. Maybe I'm wrong.

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[tdb0021]

I don't think it requires a new windshield. Maybe I'm wrong.

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Technically it does... but there are work arounds. All the new windshield does is give the camera a place to mount to and look out of. You can make a DIY mount that would allow your existing windshield to work. This is what i did.

 

[vincentw56]

Technically it does... but there are work arounds. All the new windshield does is give the camera a place to mount to and look out of. You can make a DIY mount that would allow your existing windshield to work. This is what i did.

Awesome work. I can't wait until you get it figured out.

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[tdb0021]

So i have made some major progress on this. I managed to find a New DASM on ebay for half the price of retail. After a long wait it finally got here today. I swapped it with my current (used) one and fired the truck up. For the first time in literal months there were 0 warnings on my dash. I think this was the missing piece to get this whole thing to work. When i try to turn cruise control on I get a "front radar in plant mode" warning on my dash. To me, this is great news. I now know that the truck is happy with everything i've installed and enabled via alpha and the only thing that's required is to calibrate the radar. After looking at alpha obd I see I have 3 DTCs: C14A4, C2212, C008F. Each of these codes is related to the alignment of the sensor in the windshield. Unfortunately I cannot perform the sensor alignment procedure with the current version of alpha obd.

I have called my dealer that has been great in the past with my side projects to quote me for a cruise alignment. If they won't perform the alignment, i have another backup plan...Safelite glass repair offers to do the alignment procedure when you get a new windshield installed. If the dealer won't do it, i will be trying that next.

 

[vincentw56]

That is awesome.

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