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New Cascadia with Cummins engine and Wabco OnGuard, obtaining cruise when adaptive cruise Is interrupted

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Applicable Vehicles:

Applies to all New Cascadia (P4) vehicles built with Cummins engines and WABCO OnGuard. 

Issue:

Interruption of the forward radar system results in loss of both standard and adaptive cruise functions. The OnGuard system will recover (self-heal), once the issue goes away, but the driver cannot get Adaptive Cruise Control functional until the ignition switch is cycled.

 Solution:

All New Cascadia vehicles with Cummins engines and WABCO OnGuard come standard with “Adaptive Cruise Control” and “Adaptive Cruise Control Recovery” enabled.   On all of our current built Freightliners, cruise on/off control is used to enable the cruise feature when adaptive cruise is not available.  Since New Cascadia does not support a cruise on/off switch, the cancel button must be used to obtain cruise control when Adaptive Cruise is not available.   To obtain cruise control when Adaptive Cruise function has been interrupted, press the pause (cancel) button 2 times (ON-OFF-ON-OFF) and then press the set button once. A Set or Resume command on the Set, Resume buttons will then engage the Cruise Control feature without Adaptive Cruise Control functionality.

Additional information added 7/14/2020:

  1. ISX Cummins Performance Engines have a fix that was put in production 1/20/2020. 
    1. The ECM software is compatible for all X15 engines from 2017 forward.
    2. Part of the “self-heal” process, requires a toggling the Pause/Cancel twice + CC set to allow for recovery.
  2. ISX Cummins Efficiency Engine will come in mid-year (2020).these engines will have the same fix.
    1. The ECM software is compatible for all X15 engines from 2017 forward.
    2. Part of the “self-heal” process, requires a toggling the Pause/Cancel twice + CC set to allow for recovery.
  3. X12 is expected to pick up this functionality later this year (2020), a timeline is not currently available for ISX12N.

How To update a vehicle to have adaptive cruise recovery capability. Added 7/14/2020

  1. Update the engine calibration
  2. Change Adaptive Cruise Recovery from Conventional to Adaptive* in Features and Parameters as shown below

.*This may require an update to Insite as older versions will display Disable / Enable under Adaptive Cruise Recovery

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