FSB 364-038

Mack Trucks, Inc.
Greensboro, NC USA
Field Service Bulletin
Trucks
Date
Group
No.
Release
Page
11.2014
364
038
01
1(3)
Vehicle Electronic Control Unit (VECU),
Reprogramming
Fifth Wheel Slide
CHU, CXU, GU, TD
FSB 364-038, Vehicle Electronic Control Unit
(VECU), Reprogramming
Fifth Wheel Slide
(November 2014)
Certain MACK CHU, CXU, GU, and TD trucks equipped with an air slide fifth wheel, and built
08/18/2014 through 11/07/2014, may display a “Fifth Wheel Slide Fault” message in the
instrument cluster when the vehicle shuts OFF during Idle Shutdown. This condition is due to
a parameter programming issue. The procedure outlined in this Field Service Bulletin (FSB)
will reset the parameter correctly.
Note: This bulletin does not apply to MACK Trucks Australia.
W9083935
PV729-FSB364-038_M
USA67420
Mack Trucks, Inc.
Field Service Bulletin
Date
11.2014
Group
No.
Release
364
038
01
Repair, Reprogramming Procedure
You must read and understand the precautions and guidelines in Service Information,
group 80, "General Safety Practices, Body, Cab, and HVAC" before performing this
procedure. If you are not properly trained and certified in this procedure, ask your
supervisor for training before you perform it.
NOTE: Information is subject to change without notice. Illustrations are used for reference
only and can differ slightly from the actual vehicle being serviced. However, key
components addressed in this information are represented as accurately as possible.
1 Park the vehicle on a flat and level surface.
2 Apply the parking brake.
3 Place the transmission in neutral or park.
4 Install the wheel chocks.
W7086748
5 Using Premium Tech Tool (PTT), run Accessory kit 85143650.
6 Reprogram the Vehicle Electronic Control Unit (VECU) MID 144.
7 Verify proper operation after reprogramming is complete.
8 Remove the wheel chocks.
W7086759
Page
2(3)
Mack Trucks, Inc.
Field Service Bulletin
Date
11.2014
Group
No.
Release
364
038
01
Reimbursement
This repair may be eligible for reimbursement
if a product failure was experienced within
time and mileage limits of the applicable
Warranty coverage. Reimbursement is
obtained via the normal claim handling
process.
UCHP
Reimbursement
eWarranty
Reimbursement
Claim Type (used only when uploading from
the Dealer Bus. Sys.)
01
01
Primary Labor Code (Vehicle Electronic Control
Unit (VECU), Reprogramming)
3646-22-09-02
0.6 hrs.
2303S-01-80
0.6 hrs.
Causal Part
82280755
82280755
Labor Code
MACK Trucks North America reserves the right to make any changes in design or to make
additions to or upon its products without incurring any obligations to install the same on
vehicles previously built.
Page
3(3)