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Discussion Starter #1
So on my 2018 Ram, I got the security by-pass wiring. I plugged it in like it said to, very vague instructions, but very nice wiring harness. Maybe I plugged the wires in wrong. Not sure. The instructions just said to plug it into an open spot. So that's what I did. Seems like its okay?

So I was able to turn on the rain sensing wipers. Cool.

Then I went in to change my tire size. And this is when the e hit the fan. I found an option for some 35x12.5x18 tires. So I selected that since that's what I installed on my truck.

I saved the change and called it good.

But now I have ABS warning lights going off, my speedo doesn't work anymore, and my trailer brake system has been disabled.

WTH is going on? I tried to turn back the tire size to the stock size, but nothing will clear. I've tried to clear the ABS codes, but I haven't had any luck.

I still can't get into to change my tire pressures either. Maybe I have the wiring for the bypass messed up???
 

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^^^yep use link posted above, those instructions worked great for me

You need your pin from the dealer to change your tpms, your harness is fine
 

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Those worked great. Thanks for the directions. Thats fixed now.

Do you have a link to changing the tire pressures? I'll do a search as well.

Thanks
Absolutely bud.

Here’s the main AlfaOBD thread. In the first post is the link to a lot of popular changes. If you don’t find something specific (instructions) you need just ask on that thread as there are tons of people that have made tons of changes. Not all instructions are listed but those guys will know how to make the necessary changes.
 

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Discussion Starter #8
I'd love to. Mine is a 2500

I'm running 35x12.50x18 tires. Load Range F. I mostly town a car trailer and in the summer a 38.5' fifth wheel when we go camping. So I really do not need my tires set to 80 psi all the time. I usually have them set at 65 psi front and 50 psi in the rear when I'm not towing.
 

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Discussion Starter #10
I bought the Android version. I have an old Android phone I use. I'm an Apple computer user, so Windows is a no go for me.

I'm not sure which is better. I bought the full Android version for $49
 

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Ah ok. I'm a Windows and iPhone user so I was thinking about going the Windows route. But I'm sure I could get my hands on an old Android phone or cheap tablet. When you buy the Android version for $49 does it come with the ODB reader and an access code or something to download the app?

Or do you download the app and then they ship the ODB reader? Thanks.
 

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Is there a concern related to using AlfaOBD on a phone you use daily? I have a couple of old tablets, but none work well. I'd like to be able to use my current Android phone, rather than have a second device exclusively for AlfaOBD. Are there issues with doing that?
G
 

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Is there a concern related to using AlfaOBD on a phone you use daily? I have a couple of old tablets, but none work well. I'd like to be able to use my current Android phone, rather than have a second device exclusively for AlfaOBD. Are there issues with doing that?
G
I don’t see what the issue would be. It’s just an app like any other app you put on your phone.
 

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That's what I figure, I just noticed several people were talking about having a separate Android device to use with AlfaOBD. I was just wondering if there was some issue I hadn't heard about.
Will probably grab that app and start playing with it. Got a couple of changes I'd like to make.
G
 

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That's what I figure, I just noticed several people were talking about having a separate Android device to use with AlfaOBD. I was just wondering if there was some issue I hadn't heard about.
Will probably grab that app and start playing with it. Got a couple of changes I'd like to make.
G
I’m in the Apple system. Have a PC, but didn’t want to drag that out when I want to check/change something. Since there is no iOS support for AlfaOBD, I bought a Samsung Tab A. So I downloaded the Android version on the tablet. Tether it to my iPhone if I don’t have WiFi. Did all my changes in my garage, so I used my home WiFi signal.
If I would have had an Android phone, that would have been fine too.
 

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That's what I figure, I just noticed several people were talking about having a separate Android device to use with AlfaOBD. I was just wondering if there was some issue I hadn't heard about.
Will probably grab that app and start playing with it. Got a couple of changes I'd like to make.
G
If I had an android phone I would have used it. I have an iphone and mac computer, to me the $40 dollar fire tablet was cheaper than a windows based item. Plus from what I have seen the android setup is a little more user friendly, and I just leave the tablet in my center console so I can read codes if needed.
 

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Ah ok. I'm a Windows and iPhone user so I was thinking about going the Windows route. But I'm sure I could get my hands on an old Android phone or cheap tablet. When you buy the Android version for $49 does it come with the ODB reader and an access code or something to download the app?

Or do you download the app and then they ship the ODB reader? Thanks.
the OBD reader is a separate item from AlfaOBD. But is required to connect to your truck, OBDlink Mx or Mx+ from scantool is recommended.( the + just allows IOS support for other apps)

For the android version go to the google play store on your device and buy the app.

Windows I believe you have to wait for an access code
 
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