ANSWER: On some newer Mack models the option to program the ESP control unit configuration is not available. If this is the case, you will need to “finish work”; remove this vehicle from the “Latest Selection” list; go to the top left of the screen and “work offline”. Now reconnect to the vehicle, but only in the offline mode. When asked for Electrical system select: V-MAC IV+ , select Mack Models:
For an AN, select CXU
For a GR, select GU
For a PI, select CHU
The ESP Control Unit Configuration operation should now be available and possible to open. After opening the operation, connect to Central Systems (by selecting “Connect to Central Systems” from the Tech Tool menu).
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