ABS error after recalibration for tire size using Flashcal

[Sarah.windsor14]

I lifted my Jeep today and added 35s on it. I used the flash cal F5 to recalibrate and after it finished I got an error saying “unable to initialize ABS”. Has anyone else gotten this error?

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[JMONEZ]

Yes, often. If abs does not initialize when programming tire size, go to service options, then click on ABS calibration, it should work fine. Be sure you’re on level ground and steering straight ahead, sometimes it will take one or two times to work and go through recalibration

 

[Bee-Rad]

I know this may be an old thread, but I found it by searching this issue and wanted to add.

I'm getting the same "unable to initialize ABS" message after entering new tire size. I've tried about a dozen times parked in different flat areas with the steering wheel straight, but keep getting this message and going to Service Options -> ABS calibration it still fails.

But the speedo shows correctly and I don't get any dash lights or warnings, so I'm going to say it's fine.

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