2015Mack Posted January 11 Share Posted January 11 I have a 2015 Mack with an Mdrive transmission. When adding a PTO and using the PTO switch in the dash, are there things that need to be enabled in the program? We installed the mechanical part but the switch won't engage the pto. Quote Link to comment Share on other sites More sharing options...
67RModel Posted January 11 Share Posted January 11 I assume you installed an electric shift PTO? If so where did you wire it to? did you check for continuity on those wires using the dash switch before wiring up the PTO? If all that checks out sounds like it could be a software issue.... Quote Link to comment Share on other sites More sharing options...
fjh Posted January 12 Share Posted January 12 20 hours ago, 2015Mack said: I have a 2015 Mack with an Mdrive transmission. When adding a PTO and using the PTO switch in the dash, are there things that need to be enabled in the program? We installed the mechanical part but the switch won't engage the pto. Yup ! Think its a dealer issue here there are lots of parameters to be set even just enabling it (may not) get the result you expect! 1 Quote Link to comment Share on other sites More sharing options...
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