using AlphaOBD

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

Radfart

Junior Member
Joined
Jan 22, 2025
Posts
3
Reaction score
0
Location
Ririe, Idaho
Ram Year
2018
Engine
3.0 eco diesel
I have a 2018 3.0 Ecodiesel, and am trying to access with AlphaOBD. When I want to select my truck, is it the 2018 DT/DS option? I do have the security bypass cable
Thanks
 

afoadi

Junior Member
Joined
Aug 9, 2025
Posts
6
Reaction score
1
Location
Calgary,Alberta
Ram Year
2019
Engine
hemi 5.7
hello, I am new here and can't make a separate post.
I have 2019 Ram classic (tradesman) and decided to upgrade the basic instrument to premium
I have alfaobd and obdlink EX everything seems ok ,the app can connect with cable but when I want to set the old mileage to new cluster, Even though I follow all the steps correctly, after a few seconds it gives the message "procedure failed" and nothing happens , could you please help me?
 

Attachments

  • IMG_9053.JPG
    IMG_9053.JPG
    13.5 KB · Views: 4

RamDiver

Senior Member
Joined
Jan 23, 2022
Posts
5,744
Reaction score
12,122
Location
Marlborough, Ontario Canada
Ram Year
2021 DS
Engine
Hemi 5.7
hello, I am new here and can't make a separate post.
I have 2019 Ram classic (tradesman) and decided to upgrade the basic instrument to premium
I have alfaobd and obdlink EX everything seems ok ,the app can connect with cable but when I want to set the old mileage to new cluster, Even though I follow all the steps correctly, after a few seconds it gives the message "procedure failed" and nothing happens , could you please help me?

Are you using a Security Gateway Bypass harness?

All Ram trucks 2018+ have a Security Gateway Module that must be bypassed.

The KaodTech Security Bypass cable is a popular choice and what I have been using.

I installed it 1.5 years ago and leave it coiled up behind the cover below the steering column.

https://kaodtech.com

They often appear to be out of stock when you check online. No matter, they get made and shipped pretty fast.

The guy building them is Forum member.

And, welcome to Ram Forum. :cool:

.
 

afoadi

Junior Member
Joined
Aug 9, 2025
Posts
6
Reaction score
1
Location
Calgary,Alberta
Ram Year
2019
Engine
hemi 5.7
Thank you very much for your help, I didn't use the bypass harness, but my question is, when it has a security gateway, can the AlfaOBD still connect without problems?! I mean, is there no message or way for me to find out?
 

crash68

ACME product engineer
Staff member
Administrator Moderator Supporting Member
Joined
Mar 20, 2016
Posts
12,362
Reaction score
21,523
Ram Year
2015
Engine
3.0 EcoDiesel
when it has a security gateway, can the AlfaOBD still connect without problems?!
Information can be read but you won't be able to write any changes.

This bypass cable is highly recommend as not all cables connect both CAN-bus:
 

RamDiver

Senior Member
Joined
Jan 23, 2022
Posts
5,744
Reaction score
12,122
Location
Marlborough, Ontario Canada
Ram Year
2021 DS
Engine
Hemi 5.7
Thank you very much for your help, I didn't use the bypass harness, but my question is, when it has a security gateway, can the AlfaOBD still connect without problems?! I mean, is there no message or way for me to find out?

You're most welcome.

The only message received is what you have mentioned, "Procedure Failed".

When you use a Security Gateway bypass harness, AlfaOBD will confirm the success completion of each operation.

AlfaOBD will function with any of the trucks using the CAN bus architecture, up to and including the 2024 model year.

Only the 2025 trucks use a different system and will not be accessible.

The 2018 to 2024 model years require a Security Gateway bypass harness.

The big advantage of the KaodTech harness is that it connects directly to the CAN bus blocks beside/behind the OBD2 port, regardless of where the Security Gateway Module is located.

And, the installation only requires a few minutes and can remain installed.

Installation directions can be downloaded in a PDF format from the site linked above or from the attached docs. :cool:

Keep in mind that if you ever expect to visit a dealer for warranty work or service, don't remove/replace the factory OBD2 port. Temporarily plug the bypass cable into the OBD2 port and coil the harness and stash it behind the dash when not in use.

.
 

Attachments

  • KaodTech 4th gen Security Gateway Bypass Cable installation.pdf
    577.6 KB · Views: 4
  • KaodTech 5th gen Security Gateway Bypass Cable installation.pdf
    376.9 KB · Views: 2
Last edited:

afoadi

Junior Member
Joined
Aug 9, 2025
Posts
6
Reaction score
1
Location
Calgary,Alberta
Ram Year
2019
Engine
hemi 5.7
You're most welcome.

The only message received is what you have mentioned, "Procedure Failed".

When you use a Security Gateway bypass harness, AlfaOBD will confirm the success completion of each operation.

AlfaOBD will function with any of the trucks using the CAN bus architecture, up to and including the 2024 model year.

Only the 2025 trucks use a different system and will not be accessible.

The 2018 to 2024 model years require a Security Gateway bypass harness.

The big advantage of the KaodTech harness is that it connects directly to the CAN bus blocks beside/behind the OBD2 port, regardless of where the Security Gateway Module is located.

And, the installation only requires a few minutes and can remain installed.

Installation directions can be downloaded in a PDF format from the site linked above or from the attached docs. :cool:

Keep in mind that if you ever expect to visit a dealer for warranty work or service, don't remove/replace the factory OBD2 port. Temporarily plug the bypass cable into the OBD2 port and coil the harness and stash it behind the dash when not in use.

.
Thank you very much for all these tips, I will buy a cable and share the results here, and thank you for the welcome.
 

RamDiver

Senior Member
Joined
Jan 23, 2022
Posts
5,744
Reaction score
12,122
Location
Marlborough, Ontario Canada
Ram Year
2021 DS
Engine
Hemi 5.7
Thank you very much for all these tips, I will buy a cable and share the results here, and thank you for the welcome.

You're welcome and looking forward to hearing your success stories.

The AlfaOBD thread is loaded with great information, and many of the members can help with anything you can't find answers for.

.
 
Last edited:

afoadi

Junior Member
Joined
Aug 9, 2025
Posts
6
Reaction score
1
Location
Calgary,Alberta
Ram Year
2019
Engine
hemi 5.7
You're welcome and looking forward to hearing your success stories.

The AlfaOBD thread is loaded with great information, and many of the members can help with anything you can't find answers for.

You're welcome and looking forward to hearing your success stories.

The AlfaOBD thread is loaded with great information, and many of the members can help with anything you can't find answers for.

.
Thank you friends for your help and guidance. I managed to upgrade the RAM cluster with your guidance.
 

Attachments

  • IMG_9068.jpeg
    IMG_9068.jpeg
    155.3 KB · Views: 2

Members online

Forum statistics

Threads
211,312
Posts
3,064,978
Members
171,640
Latest member
Fatboy1989
Back
Top