Forscan help

[Tremor N.C.]

Tried & completed, a much larger tire size change & it accepted the size & corrected speedometer but now have all wheel drive light & service soon light & wrench icon. Changed back to original size & still can't get lights off. Anyone had this or similar problem or a solution ?

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[Jtitzer56]

Switch back to the tire size that was correct the same way you did, then go to the service options and toward the top there's one that'll say something like PCM relearn(might be ABS or TCM), run that. It pretty much just tells the other modules what you just programmed in the BCM.

If you look at your DTC's one of them that is stored now should have the instructions on how to fix it.

 

[lm126027]

Switch back to the tire size that was correct the same way you did, then go to the service options and toward the top there's one that'll say something like PCM relearn(might be ABS or TCM), run that. It pretty much just tells the other modules what you just programmed in the BCM.

If you look at your DTC's one of them that is stored now should have the instructions on how to fix it.

Looking for someone with Forescan to make a similar change on my Mav once I have put on the snowtires (which are a little smaller and caused the mileage, miles to empty, etc to be off 2 to 3 mph). Live in Central MA.

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