Freightliner strange ABS problem

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Mr. Truck Fixer, Nov 18, 2022.

  1. Mr. Truck Fixer

    Mr. Truck Fixer Bobtail Member

    46
    13
    Jan 27, 2012
    Ontario
    0
    Driver came to the shop today and told me that as he was slowing down for a stop sign ahead. Driving on slippery snow covered road he put the truck in neutral and applied the brake the ABS activated due to wheel lock up but the strange part is when that happened the engine RPM raised to 2000rpm and came back to idle ( good thing it was in neutral ).
    He was able to re create the issue a few more times and it only happens during an ABS event. Has anyone heard of this before ?
    2013 Freightliner Coronado DD15. 18 speed Fuller
     
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  3. armo

    armo Light Load Member

    274
    290
    Jun 16, 2022
    0
    Some 2011-2013 Freightliner trucks need to update wabco module software. There were 2 or 3 updates as far as i remember.
     
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