meritor auto/manual 12 speed

Discussion in 'Freightliner Forum' started by chimbotano, Dec 6, 2013.

  1. Dec 6, 2013 #1
    chimbotano

    chimbotano Heavy Load Member

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    Apr 21, 2013
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    Guys, I hope you guys can help me with this question. My freightliner 2005 Columbia has an auto/manual trans. Few days ago I noticed that when I start it, , "SM" code appears. I put it in Drive but it will not switch gears in auto position. The rpm goes up but the gears doesn't switch, so I have to put it in manual. In manual it switch gears but the "SM" code still there. The "SM" code disappear after I drive for about 30 -40 miles, then I can put it in auto or in manual and it will drive just fine. I'll appreciate your input on this matter.
    Thank you for your time.
     
    chimbotano, Dec 6, 2013
    chimbotano, Dec 6, 2013
    #1
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  3. Dec 6, 2013 #2
    Dakota1358

    Dakota1358 Medium Load Member

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    Jun 15, 2009
    Staunton,Va
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    SM is system malfunction.Mine does it occasionally.I usually turn the truck off wait a sec and turn it back on and its fine.May want to get it checked if it happens alot.Mine usually only does it after setting over the weekend.
     
    Dakota1358, Dec 6, 2013
    Dakota1358, Dec 6, 2013
    #2
    chimbotano Thanks this.
  4. Dec 7, 2013 #3
    Pablo-UA

    Pablo-UA Road Train Member

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    pull mid 130 codes with diagnostic button, ore pull shifter to read codes on tranny display
     
    Pablo-UA, Dec 7, 2013
    Pablo-UA, Dec 7, 2013
    #3
    chimbotano Thanks this.
  5. Dec 7, 2013 #4
    chimbotano

    chimbotano Heavy Load Member

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    Pablo thank you for your time. How do you pull mid 130 codes or what do you mean "pull shifter to read codes"
    thank you
     
    chimbotano, Dec 7, 2013
    chimbotano, Dec 7, 2013
    #4
  7. Dec 7, 2013 #5
    Pablo-UA

    Pablo-UA Road Train Member

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    Oct 11, 2010
    Borispol, Ukraine
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    there is diagnostic button on your dash display, hit it till U see 130 codes. With shift lever U can pull codes on tranny indicator but in HEX format
     
    Pablo-UA, Dec 7, 2013
    Pablo-UA, Dec 7, 2013
    #5
    chimbotano Thanks this.
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