17TS-05REV2

Daimler Internal
No.: 17TS-05Rev2
October 2020
TO:
Service Locations
FROM:
Service Systems Development
SUBJECT:
Detroit™ DT12™ TCM GHG17 Only; Bootloader Update
ISSUE
On Detroit™ DT12™ equipped vehicles, it may be necessary to complete an additional step in
the programming process when updating the TCM software.
REQUIRED ACTION
1.
To improve the programming success rate, a hard-wired connection from DiagnosticLink®
to the vehicle is preferred. Connect DiagnosticLink version 8.12 with Service Pack 2 (or
higher versions) on the Identification Tab and check the TCM01T Hardware Part Number.
Is the TCM Hardware Part Number listed as A0504463109 ZGS 901 or A0504463409
ZGS 901?
a. Yes; special programing steps are NOT necessary and you may continue to program
the powertrain modules as usual with Model Year 2020 package.
b. No; the TCM Hardware Part Number level is either A0504463109 ZGS 001 or
A0504463409 ZGs 001. Continue to step 2.
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2.
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Connect DiagnosticLink® version 8.12 with Service Pack 2 (or higher). Download Unit
Data from server and note the TCM01T Hardware Part Number (last 3 digits are 001).
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3.
After download, select “Next”.
4.
Select TCM01T, then “Update Device Software”. Select bootloader software
NAMT154601, and then select “Next”.
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5.
Make sure software NAMT154601 is correct and then select “Start”.
6.
Programming will fail at the step highlighted below -- “Data Implausible – reconnected in
boot mode”. This is an expected error.
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7.
Navigate back to the “Identification” screen and you will see TCM01T is “Running in Boot”.
Again, this is an expected result.
8.
Reselect “Program Device” tab, and select the “Back” button.
9.
Highlight the VIN, select “Remove” and then select “Add” to reload the VIN.
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10.
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After the VIN has been re-added, notice TCM01T Hardware Part Number has changed
(last 3 digits are now 901). Select “OK” and connect to the server. Note: You may have to
manually connect to the TCM prior to downloading server data; see steps 11 and 12
for manual connection details. If a manual connection is not necessary, go to Step 14.
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11.
This step and step 12 show how to manually connect to the TCM.
12.
Connect to server, and download unit data.
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13.
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If not connected after download, make a manual connection to the TCM. (Refer back to
Steps 11 & 12 for manual connection instructions.) After a connection is made, continue
to Step 14.
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14.
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Verify TCM software NAMT191402 and select “Start” to complete programming.
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15.
Verify programming was successful.
16.
After programming is complete, navigate to Identification tab and verify TCM software,
NAMT191402. Continue to program the powertrain modules with Model Year 2020
applicable software versions as usual. Refer to DTNA Connect  Detroit Service
Information  Service Info Page  Software Versions.
NOTE: DO NOT PERFORM A TRANSMISSION LEARN. DO NOT PERFORM A CLUTCH
LEARN. LEARNED VALUES ARE RETAINED DURING THE PROGRAMMING
EVENT.
CONTACT INFORMATION
Please contact the Detroit® Customer Support Center at 800-445-1980 or email
[email protected] if you have any questions.