NHTSA ID Number: 10238716
Manufacturer Communication Number: TCH-27-005
TSB/Document Date: 2023-07-06
Summary
Technical Bulletin for the Bendix
EC-80 Antilock Braking System (ABS) ECU. The ECU may require a software update due to a malfunctioning warning lamp. The warning lamp may not illuminate when Diagnostic Trouble Codes are active and the vehicle is in motion on certain Navistar vehicle applications.
Technical Bulletin
Bulletin No: TCH-27-005 Rev 000
Subject:
Initial Release Date: 5/15/23 Revision: N/A
Page: 1 of 4
Bendix® EC-80™ Antilock Braking System (ABS) Electronic Control Unit (ECU)
Standalone Update Tool - ID 13351
DESCRIPTION
The Bendix® EC-80™ Antilock Braking System (ABS) Electronic Control Unit (ECU) may require an update due to a
malfunctioning ABS warning lamp. There are instances where the ABS warning lamp does not illuminate in situations
where it should (i.e. when there is an active Diagnostic Trouble Code [DTC] and the vehicle is in motion). The Bendix
EC-80 standalone update tool can be used to update the ECU and restore proper functionality.
In certain versions of the EC-80 ABS ECU, a malfunction may not be correctly indicated by the ABS warning
lamp. While the ABS warning lamp will function as intended when the vehicle is stationary, it will turn off
when the vehicle is in motion. Other dashboard lamps will illuminate to signal the driver to seek service. A
malfunctioning warning lamp may potentially confuse the driver. A software update is available for impacted
EC-80 ABS ECU versions to help eliminate these concerns.
Refer to Table 1 for a list of impacted and updated part numbers.
Bendix Part Number
Navistar Part Number
Software Z Number
Impacted PN
Updated PN
Impacted PN
Updated PN
Impacted PN
Updated PN
K210927R000
K210927R001
4045853C4
4045853C5
Z251843
Z286098
K210928R000
K210928R001
4055091C4
4055091C5
Z251843
Z286098
K210929R000
K210929R001
4104387C3
4104387C4
Z251843
Z286098
K212564SC000
K212564SC001
-
-
Z251843
Z286098
K212565SC000
K212565SC001
-
-
Z251843
Z286098
K212566SC000
K212566SC001
-
-
Z251843
Z286098
K219871R000
K219871R001
4288644C1
4288644C2
Z281032
Z285654
K219872R000
K219872R001
4288638C1
4288638C2
Z281032
Z285654
K219874R000
K219874R001
4288643C1
4288643C2
Z281032
Z285654
K219876SC000
K219876SC001
-
-
Z281032
Z285654
K219877SC000
K219877SC001
-
-
Z281032
Z285654
K219878SC000
K219878SC001
-
-
Z281032
Z285654
K227744T000
K227744T001
-
-
Z251843
Z286098
K227745T000
K227745T001
-
-
Z251843
Z286098
Table 1 – Impacted and Updated Part Numbers
ELECTRONIC CONTROL UNIT (ECU)
UPDATE PROCEDURE
5.
Figure 4 shows the update completed successfully.
To perform the update, a Windows® laptop (Windows
10 or 11 is recommended) with the standalone update
tool downloaded, a compatible RP1210C adapter
(i.e. Noregon®, Nexiq™, etc.), and the manufacturer’s
Windows drivers for the RP1210C device are required.
1. Key on the vehicle with the engine off.
2. Select the EC80 Update Tool-ID 13551 shortcut.
Select the installed diagnostic interface and channel.
See Figure 1.
Figure 4 – Update Completed Successfully
6.
Figure 5 shows the update failed. Power cycle and
restart the update procedure from Step 1.
Figure 1 – Interface and Channel Selection
3. Select Update. See Figure 2.
Figure 5 – Download Failed
7.
Figure 6 shows the update has already been
performed. No further action is required.
Figure 2 – Update Icon
4.
Figure 3 shows the update is in process. The update
time is approximately two (2) minutes.
Figure 6 – Update Already Performed
Figure 3 – Update in Process
8.
Figure 7 shows the Electronic Control Unit (ECU)
is not eligible for the update. No further action is
required.
Figure 7 – ECU Ineligible for Update
9.
Figure 8 shows the engine RPM has been
detected. Power cycle to ignition only and restart
the update procedure from Step 1.
Figure 8 – Engine RPM Detected
10. Figure 9 shows the ECU is not detected. Verify
the ignition power is ON and/or ensure the correct
RP1210C channel is selected. Restart the update
procedure from Step 1.
Figure 9 – ECU Not Detected
ADDITIONAL SUPPORT
Phone Bendix technical support at 1-800-AIR-BRAKE
(1-800-247-2725), option 2, Monday through Thursday,
8:00 a.m. to 6:00 p.m., and Friday, 8:00 a.m. to 5:00 p.m.
ET, or by email at techteam@bendix.com.
24/7/365 ACCESS
FULL SERVICE AT YOUR FINGERTIPS
1-800-AIR-BRAKE (1-800-247-2725)
TECHTEAM@BENDIX.COM
WEB-BASED TRAINING
LOG ON AND LEARN FROM THE BEST
© 2023 Bendix Commercial Vehicle Systems LLC, a member of Knorr-Bremse • 6/23 • All Rights Reserved
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TSB/Document ID: TCH-27-005
Replacement Service Bulletin Number:
MFR Communication Date: 2023-06-14
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ELECTRONIC STABILITY CONTROL:AUTOMATIC (ASC)
MFR Component System:
MFR Component Subsystem:
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