2015Mack Posted December 9, 2021 Share Posted December 9, 2021 I have a 2015 Mack CXU613 with the mdrive. It doesn't have the up and down arrows to manually shift the transmission. Can these functions be added? If so what would it cost? Thanks! Quote Link to comment Share on other sites More sharing options...
Joey Mack Posted December 9, 2021 Share Posted December 9, 2021 + and - ?? Quote Link to comment Share on other sites More sharing options...
Mackpro Posted December 9, 2021 Share Posted December 9, 2021 We did up graded the “Fleet” shifter to the “Performance” or as Mack called it the “Premium “ shifter in all the used trucks we sold at the dealership. Best I remember the shift key pad was around $500 then a couple hours labor max . Installing the key pad is easy but the harness connector is very tricky to figure out . I remember breaking at least one . The dealership then has to have Mack turn on the transmission ECM software download . Then do the download and then turn on the parameter . There are 2 different settings. One is when you push the “P” performance button it will stay in performance mode till you hit the “P” again. The other setting is after hitting the “P” button, it will go in performance mode till it feels it’s no longer needed the back to normal shift mode. 1 Quote Link to comment Share on other sites More sharing options...
2015Mack Posted December 10, 2021 Author Share Posted December 10, 2021 Thanks for your help! Quote Link to comment Share on other sites More sharing options...
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