XJ ( X351 ) 2009 - 2019

Change 2014 XJL speedo from kmh to mph ?

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Old Feb 5, 2020 | 03:13 PM
  #1  
rexinlexXJ's Avatar
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From: Nicholasville KY 40356
Question Change 2014 XJL speedo from kmh to mph ?

Just bought the car and love everything about it so far.....except the digital speedometer display reads KMH (came from Canada to US). The option to change "units" using the steering wheel controls only changes the small numerical speed display from KMH to MPH.....but the actual large speedometer dial remains in KMH regardless. I have been thru the manual several times and don't see any other options to change the speedometer display. Any advice would be greatly appreciated !
 
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Old Feb 6, 2020 | 02:43 PM
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I think that will require a dealer. Or somebody with the dealer tool which is the SDD.
I don't know the SDD stuff well enough to say where to find it in the software.
Maybe someone with some SDD knowledge can answer?
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Old Feb 7, 2020 | 04:23 AM
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SDD can do that, it's a CCF (config) change.
Also the radio band step can be changed from europe (0.1Mhz) to US (0.2Mhz)
 
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Old Jan 8, 2025 | 11:43 AM
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Reviving this thread from the dead because I had this issue for a long time. Here is the solution:

1. Start SDD and connect vehicle DA-Dongle or Mongoose cable (I used a modified Mongoose clone cable with success). Recommended to plug in your laptop and hook up a 50a 13.5v battery charger also, but I had a fully charged battery so I didn't.
2. Enter "Service Functions" in SDD
3. Click the yellow key on the right to access Engineering Mode.
4. Put your seed into a seed calculator (available everywhere online, look around the forums and some guy wrote a Python script for it too) and be sure to click "CCF EDITOR" under Jaguar Functions before receiving the password.
5. Copy password and paste into SDD. Engineering mode is active when there is a yellow bar at the bottom of the SDD window.
6. Enter Service Functions: Special Applications: Car configuration management- Current vehicle car configuration modification
7. Wait for SDD to read your modules. Follow all prompts.
8. A VERY long list of available modification parameters will come up. I suggest not touching anything you aren't 100% sure of!!
9. Scroll slowly and find the parameter that says "Main scale units". This is the single field that controls your speedometer needle and dial. Below it is "minor scale units" which controls the small numerical display below the dial. I did not touch this.
10. Change from km/h to mph or whatever you want.
11. Change any other parameters you feel comfortable with. I suggest not touching anything you aren't 100% sure of!!
12. Click the green tick on the right of the SDD.
13. Confirm you want to "download" the new CCF to your car. "Download" is the correct terminology- the car itself is downloading new files from SDD to itself.
14. Follow any prompts that SDD gives you regarding turning on or off the ignition, etc. Be patient and cross your fingers. Your car will cycle itself on and off, make a few weird noises, and at some points go completely black.
15. Ignition will reboot one final time upon a successful download and you will be prompted in SDD to return to the main screen.
 
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