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Questions on Rough Country Speedometer Calibration

mikeyk101

By mikeyk101
in Modifications & Accessories

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mikeyk101 Senior Enthusiast

mikeyk101

Posted
Posted

Ok, let's say hypothetically one was to have used the RC Speedo Calibrator almost 3 years ago to reprogram speedometer. Now while driving on road trip almost 800 miles from home, transmission totally fails. Diagnosis of truck reveals total failure and a replacement transmission is needed. RC mentions to reprogram back to stock prior to any service. Now if you are broke down that far from home and had to be towed to dealer, obviously changing back to stock is a challenge.

 

Does anyone know if the RC programming changes the ECU or does it program the Transmission module?

 

And many of these various programmers can only be used for one vehicle and get locked in. Since the original transmission will no longer be there, and last function of programmer was to reprogram, it will not see the programming when plugged in. If it is the transmission module being programmed by the RC device, will it be able to reprogram this new transmission? 

 

IIRC, when first plugged in to program, it did show the VIN number and that will not be changed, just that it will have a different unmodified programming.  

  • Like 1
MikeBMW Senior Enthusiast

MikeBMW

Posted
Posted

Sorry I don't have experience with the RC unit.
I used a FlashPaq to reprogram the speedometer for my tires, I found out later I can do the same with my Autel MaxiSys Elite.
Still, I used the FlashPaq for the 91+ octane tune so I just did the recal while I was doing that.
No transmission issues on my end.
I don't disable it when going to the dealer and I've already had them do a few transmission fluid replacement jobs ( do it every other oil change).
I would think the RC programming module would just see a new TCM program and you could reprogram from there?

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mikeyk101 Senior Enthusiast

mikeyk101

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Posted
56 minutes ago, MikeBMW said:


I don't disable it when going to the dealer and I've already had them do a few transmission fluid replacement jobs ( do it every other oil change).
I would think the RC programming module would just see a new TCM program and you could reprogram from there?

 

I think I did revert back to stock one time after initial program but haven't since and it's been in for a number of visits since. I wasn't sure if seeing a replacement transmission would be an issue because I'm not quite sure what module(s) get programmed. And I was pretty sure that once it got used and saw/read a particular VIN it gets locked to it. So hopefully since VIN remains the same, I can update the new transmission. Hopefully homeward bound tomorrow morning with a working replacement trans and will try reprogramming once I get there. I will update once I know. Thanks

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MikeBMW Senior Enthusiast

MikeBMW

Posted
Posted (edited)
10 minutes ago, mikeyk101 said:

Hopefully homeward bound tomorrow morning with a working replacement trans and will try reprogramming once I get there. I will update once I know. Thanks

Please keep us updated!
I know all of my tools, the FlashPaq and the BTDieisel AutoSync are tied to the VIN.
The Autel MaxiSys Elite, not so much but, then it's a bit of a different animal and not used for specific programming changes as the other two - mainly for diagnostics with a few built it features for changing *some* settings.

Edited by MikeBMW
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mikeyk101 Senior Enthusiast

mikeyk101

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On 3/18/2024 at 8:03 PM, MikeBMW said:

 

Turns out this was a waste of a thread. I found that the recalibration was still in effect even though a replacement transmission was installed. It seems that the RC Speedo Calibrator actually programs part of the ECU and doesn't have anything to do with the TCU. 

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MikeBMW Senior Enthusiast

MikeBMW

Posted
Posted
17 hours ago, mikeyk101 said:

Turns out this was a waste of a thread. I found that the recalibration was still in effect even though a replacement transmission was installed. It seems that the RC Speedo Calibrator actually programs part of the ECU and doesn't have anything to do with the TCU. 

I don't think it was a waste at all.
We all learned something out of your experience, thanks! :)

  • Like 2
PFTX_5.3 Enthusiast

PFTX_5.3

Posted
Posted
21 hours ago, MikeBMW said:

I don't think it was a waste at all.
We all learned something out of your experience, thanks! :)

Never a waste of time reading a thread by either of yall

  • Like 2

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