Moparmike Posted January 5, 2017 Share Posted January 5, 2017 I'm new to macks and would like to know how to check for codes..my freightliner has a swicth I flip to get them ..Truck runs great 379000 miles 8ll trans....thanks in advance Quote Link to comment Share on other sites More sharing options...
0 Mackpro Posted January 5, 2017 Share Posted January 5, 2017 Can only be checked if the yellow/amber "lighting bolt" is on. Turn the cruise on/off to off ( down). Then press and hold the set/decel or resume/accel button till the fault lamp goes out , then release and the fault lamp will flash out a 2 digit code. Quote Link to comment Share on other sites More sharing options...
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Moparmike
I'm new to macks and would like to know how to check for codes..my freightliner has a swicth I flip to get them ..Truck runs great 379000 miles 8ll trans....thanks in advance
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