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AEV ProCal Module for 2007-2018 Wrangler JK
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AEV ProCal Module for 2007-2018 Wrangler JK

Item: 30406007AG
Manufacturer: AEV
Availability: In Stock

*Does not include orders shipped to AK, HI, & PR

*Not valid on skid plates, rock rails, bumpers, body kits, some cargo liners, soft tops and certain oversize items.

Regular price: $250.00Sale price: $196.00You Save: $54.00!(22%)

Compatibility Guide

2007-2018Wrangler JK

AEV ProCal Module for 2007-2018 Wrangler JK


AEV's ProCal Module is a hand-held powerhouse! This essential tool provides JK owners an easy, low-cost way to make a variety of useful changes not offered by the dealer or any other re-programmer. Topping the list is the ability to correct the speedometer and gear ratio when larger tires are installed. When the speedometer is left uncorrected, there is a major degradation in the performance of the stability control (ESP), transmission shifting, and engine performance.

The best part of the ProCal is that it isn't just for correcting the speedometer. The Tire Pressure Monitoring System can now be recalibrated to better suit aftermarket tires without triggering the dash light. Further, the ProCal Module makes it possible to activate daytime running lamps, "one-touch" turn signals, enable a temporarily increased engine idle speed for winching, clear engine codes, and even has a feature to help alignment technicians align the vehicle perfectly for optimal ESP performance.

The ProCal Module is equipped with a series of easy-to-use DIP switches. By reading the simple Quick Reference Guide included with the ProCal module, a user can quickly dial in a code for the desired recalibration. Once the DIP switches are set, simply plug the Module into the vehicle's OBDII. The whole process can be completed in mere minutes and it's just as easy to restore the vehicle back to its original settings with the ProCal.

Please note:
  • The AEV ProCal will enable axle gear ratio changes to be made to Wranglers equipped with the A580 Automatic transmission (2011+ 2.8L, 2012+ 3.6L)
  • The AEV ProCal cannot change axle gear ratios for 2011+ 2.8L CRD diesel Wranglers with manual transmissions.
  • AEV's ProCal Module now features an all-new Transfer Case Calibration function that allows customers to install a non-stock transfer case into their 2012+ JK Wrangler (w/ A580 trans) without causing the vehicle to go into limp mode. This includes 2-speed Atlas transfer cases as well as Chrysler's Command-Trac NV241 (Sport/Sahara) and Rock-Trac NV241 (Rubicon) transfer cases.This new feature is only found on the latest version of the ProCal Module (part number 30406007AG). As of 2/18, all ProCal Modules being shipped from AEV are the latest version and include this function.

  • Key Features:
  • Correct speedometer
  • "One touch" turn signals
  • Clear engine codes
  • Easy to use DIP switches
  • Recalibrate tire pressure monitor
  • Increase engine idle speed
  • Optimize ESP performance
  • Transfer Case calibration (2012+ JK Wrangler w/ A580 trans)

  • Difficulty Level: Easy

    Estimated Install Time: 10 minutes

    Click Here to download the User Guide

    Click Here to download the Quick Reference Guide

    Promo codes are not available to redeem on AEV items due to manufacturer restrictions.


    16 Reviews
    94% (15)
    6% (1)
    0% (0)
    0% (0)
    0% (0)
    100% Recommend this product (16 of 16 responses)
    By updateCategoryParent
    Wow, it works
    September 5, 2020
    I bought this to turn on my fog lights as DRL, it worked. I kept it so I can do other stuff. Was not sure if I wanted to switch fog lights to low beams for DRL, this gives me so many choices.
    By Lew
    Works perfectly
    May 1, 2020
    I was a bit uncertain about how this would work. I made my first modification this past weekend. It was as easy as the ad says - set the dip switches, insert, horn honks twice and done. I wish I had bought one a long time ago.
    By Ken
    July 1, 2019
    Works like a Charm!
    ProsVery easy to use!!
    By Corbett
    Boulder Colorado
    Perfect product, great price
    June 10, 2019
    Works exactly as advertised and extremely easy to use. Reprogrammed my tire size, gear ratio and even add the fog lights to come on when I'm driving (driving lights). All in about 4 minutes.
    By Tommy F.
    Strasburg, Colorado
    AEV ProCal Module for 2007-2018 Wrangler JK
    April 22, 2019
    Great product. Very easy to use. Wanted to turn on daytime running lights on my 2017 Willys Wheeler. Literally took two minutes. Will also use the Procal to change tire size in the future.
    By Joel
    colorado springs
    works like promised
    January 1, 2018
    It works exactly as it was supposed to. tires calibrated tire pressure set shifting points right on the Mark. I would recommend it to anybody.
    By MikeyGee
    Excellent and accurate fix for oversized tires on a Jeep
    April 20, 2017
    Bought this module and within 5 minutes had the Jeep speedo/odo recalibrated to the correct tire size. This fixed not only the speedo readout to bring it EXACTLY in light with roadside speed readers, but it also increased my fuel mileage by 40% (vs. the 10% my speedo was off pre-module). Now the engine, tranny, and tires are meshed and the engine doesn't rev and the power is instant. Much appreciated!
    ProsEasy to use - 5 minute install - and can be reused on the same vehicle.
    By Matt
    Works Great
    March 30, 2017
    By Luis O.
    Deltona, Florida
    Lots in little package!
    December 26, 2016
    Work like advertised!
    By Freddie D.
    Southern Alabama
    Works exactly as advertised
    December 1, 2016
    Recalibrated tire diameter, set new TPMS low pressure limit and adjusted daytime running lights on our 2016 JK Sport. Works great. No problems.Walk in the park :)
    By Jeff C.
    Petaluma, California
    August 8, 2016
    Just what the doctor ordered, thanks again!
    By Matt
    Eagle River, Alaska
    May 15, 2016
    A must have once upgraded your tires. I threw on some 285/70/17 cooper STT Pro tires on my JKU, and thought I'd get away with not needing this. I noticed substantial high rpm's at high way speeds and immediately got this. Worked perfectly and now it rides like it should. Does everything it says and is super easy to use.
    ProsInexpensive Does not void warranty Works great Easy to use
    ConsCan not be used on more than one vehicle
    By Donat
    Lithonia ga
    Procal for my Jeep Wrangler
    February 10, 2016
    This is a excellent product I love it u won't lose buying this product it work as it said it can do
    By B
    July 18, 2015
    Worked great on my 2012 jk fixed my limp mode issue that comes after you regear the jeep and has many other great features.
    By scott
    upstaye n y
    dash light out finally
    June 20, 2015
    easy to use problem solved
    montgomery, tx
    JustforJeeps was a best buy on Procal
    November 26, 2014
    Very pleased to get a $10 off code to purchase the item. J4J is one of my new favorite sites.
    ProsFast shipping

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