software files to your computer hard drive and access the software from this location.
7. Turn ON the 12/24V rear Master Disconnect located behind the vehicle curbside rear upper
access panel.
8. Turn OFF the bus High-Voltage Master Switch at the Driver's Workplace and ensure the Dash
screen is OFF.
9. Once connected to the vehicle with the Proterra Diagnostics tool, Click on the “Configuration
Button” to open the Configuration tab and then click the Charge Controller “Start Flash” Button.

Click
Configuration

Beside Charge
Controller, Click
Start Flash

25 | P a g e
Headquarters: 1815 Rollins Road, Burlingame, CA 94010
East Coast Manufacturing: 1 Whitlee Court, Greenville, SC 29607
West Coast Manufacturing: 383 Cheryl Lane, City of Industry, CA 91789

10. The following screen will be displayed. Navigate to the location where you stored the
configuration file earlier. Select the file and click “Open” to load the file.

Select the file and
Click Open

11. The Proterra Diagnostic Tool will attempt to connect to the device.
NOTE: You may receive an error on the first attempt. If so, retry by clicking the Charge
Controller Start Flash button again.
Error message on
failed first attempt

12. When the software update begins, and the following screens will be displayed.

13. The software update may take several minutes to complete. When the update is complete the
following screen will be displayed. Click the “OK” button to complete the update process.

Click OK

14. The software update is now complete.
26 | P a g e
Headquarters: 1815 Rollins Road, Burlingame, CA 94010
East Coast Manufacturing: 1 Whitlee Court, Greenville, SC 29607
West Coast Manufacturing: 383 Cheryl Lane, City of Industry, CA 91789

Update Using Microboot (alternate method)
The purpose of this procedure is to update the Charge Controller software version.
1. Ensure you have the latest Microboot program and software file CC**.srec to a known location
on the service technician’s computer (Folder or Desktop).
IMPORTANT! NEVER access the software from the USB memory device, ALWAYS copy the
software files to your computer hard drive and access the software from this location.
2. Turn ON the 12/24V rear Master Disconnect located behind the vehicle curbside rear upper
access panel.
3. Turn OFF the bus High-Voltage Master Switch at the Driver's Workplace and ensure the Dash
screen is OFF.
4. Power up (boot) the Proterra-supplied laptop containing the MicroBoot executable file.
5. Connect the octopus cable to the OBD port located in the Rear Deck of the bus.
6. Connect the PCAN dongle to the PCAN connection on the octopus cable.
7. Verify no other CAN utilities are running on the laptop; close PCAN Explorer, Proterra
Diagnostic Tool, etc.
8. Connect PCAN dongle to the USB port on the laptop.
9. Launch MicroBoot on the laptop.
10. Use the “Browse” button to navigate to and select the SREC file to be loaded.
a. The software will load automatically from this point.
11. The software update may take several minutes to complete. When the update is complete the
following screen will be displayed. Click the “OK” button to complete the update process.
12. The software update is now complete.

27 | P a g e
Headquarters: 1815 Rollins Road, Burlingame, CA 94010
East Coast Manufacturing: 1 Whitlee Court, Greenville, SC 29607
West Coast Manufacturing: 383 Cheryl Lane, City of Industry, CA 91789

Verify and Update Powertrain Software Version
This procedure checks the Powertrain Controller software version and upgrades as necessary.

Verify Current Software Version
1. Connect Proterra Diagnostics tool to either front or rear OBDII connector.
2. Navigate to the Powertrain Tab.
3. Verify the Powertrain Software version is 2.4.1, as shown in this screenshot (middle top)
a. NOTE: if updating the SEPTA or NYCT vehicle fleets, These vehicles’ software
only differ in terms of max speed limit. Verify these software versions:
i. SEPTA = 2.5.1
ii. NYCT = 2.6.1

4. If the version is not 2.4.1 (or SEPTA = 2.5.1 or NYCT = 2.6.1), proceed to the next section to
update the controller software.

28 | P a g e
Headquarters: 1815 Rollins Road, Burlingame, CA 94010
East Coast Manufacturing: 1 Whitlee Court, Greenville, SC 29607
West Coast Manufacturing: 383 Cheryl Lane, City of Industry, CA 91789

Update Powertrain Software
5. Ensure you have the latest software file ***.hex to a known location on the service technician’s
computer (Folder or Desktop).
IMPORTANT! NEVER access the software from the USB memory device, ALWAYS copy the
software files to your computer hard drive and access the software from this location.
6. Turn ON the 12/24V rear Master Disconnect located behind the vehicle curbside rear upper
access panel.
7. Turn ON to low voltage the bus High-Voltage Master Switch at the Driver's Workplace and
ensure the Dash screen is ON.
8. Once connected to the vehicle with the Proterra Diagnostics tool, Click on the “Configuration
Button” and then click the Powertrain Firmware “Start Flash” Button.

Click
Configuration

Beside
Powertrain
Firmware, Click
Start Flash

29 | P a g e
Headquarters: 1815 Rollins Road, Burlingame, CA 94010
East Coast Manufacturing: 1 Whitlee Court, Greenville, SC 29607
West Coast Manufacturing: 383 Cheryl Lane, City of Industry, CA 91789

9. The following screen will be displayed. Navigate to the location where you stored the
configuration file earlier. Select the file and click “Open” to load the file.

Select the file and
Click Open

10. The Proterra Diagnostic Tool will attempt to connect to the device.

11. When the software update begins, and the following screens will be displayed.

12. The software update may take several minutes to complete. When the update is complete the
following screen will be displayed. Click the “OK” button to complete the update process.

Click OK

13. The software update is now complete.

30 | P a g e
Headquarters: 1815 Rollins Road, Burlingame, CA 94010
East Coast Manufacturing: 1 Whitlee Court, Greenville, SC 29607
West Coast Manufacturing: 383 Cheryl Lane, City of Industry, CA 91789

Verify and Update Dash Software Version
This procedure checks the Dash Controller software version and upgrades as necessary.

Verify Current Software Version
1. With the vehicle powered on and the dash awake, read the software version from the
Maintenance menu for the “Dash”.
a. To access this menu:
b. Press and hold the down arrow for three seconds.
c. Navigate up/down to “Maintenance” and press the select “O” button.
d. Navigate up/down to “Software Versions” and press the select “O” button.

2. In this screenshot, the Dash software version (middle) is 200126 v 006.
3. If the version is not “v 006”, proceed to the next section to update the controller software.

31 | P a g e
Headquarters: 1815 Rollins Road, Burlingame, CA 94010
East Coast Manufacturing: 1 Whitlee Court, Greenville, SC 29607
West Coast Manufacturing: 383 Cheryl Lane, City of Industry, CA 91789

Update Dash Software
The purpose of this procedure is to update the driver workplace (dash screens) configuration to
deploy the new look of the Proterra Dash.
4. Ensure you have the latest software file 031728_rev6.ZIP to the service technician’s laptop’s
local drive.
NOTICE: DO NOT Unzip the archive to a directory on your computer’s hard drive. The
download will use the zip file. Simply copy the zip file to your computer’s hard drive.
5. Connect the USB-Serial Port adapter to your computer. Connect the K-Line Adapter to the
USB to serial adapter. Connect the K-Line Adapter to the OBD Breakout “K-Line” programming
port (and connect it to the OBD connection at the street side front wheel well).
NOTE: Make sure you have the K-Line adapter connected to the K-Line connection to the
OBD Breakout cable and not the PCAN DB9.

USB TO LAPTOP
DB9 TO SSWW or
ECAB “K- Line”
Connection for
DWP

6. Open the “Parametereditor” version 3 software. If you do not have this version, please contact
Proterra Engineering.

7. On the Parametereditor toolbar, select “Extras” and then “Communications Parameter”.

32 | P a g e
Headquarters: 1815 Rollins Road, Burlingame, CA 94010
East Coast Manufacturing: 1 Whitlee Court, Greenville, SC 29607
West Coast Manufacturing: 383 Cheryl Lane, City of Industry, CA 91789

8. Ensure the communication parameters are correctly set. Your COM port may be a different
number.

9. On the Parametereditor toolbar, select “File” and then “Load Project”.

10. Open the folder where the Driver Work Place configuration is stored, and select the
appropriate *.ZIP file from above.
11. Switch the vehicle Low Voltage On to give power to the Driver’s Work Place.
12. IMPORTANT! Before downloading the selected software:
- Ensure that the 12/24V rear Master Disconnect is switched ON.
- Ensure the Driver’s Workplace Master Switch is switched OFF.
- Ensure the Driver’s Hazard switch is switched ON and the Dash screen is ON.
13. Select “Load All” (the large down arrow with no letter label next to it):

33 | P a g e
Headquarters: 1815 Rollins Road, Burlingame, CA 94010
East Coast Manufacturing: 1 Whitlee Court, Greenville, SC 29607
West Coast Manufacturing: 383 Cheryl Lane, City of Industry, CA 91789

14. The download should begin and takes about 10 minutes (approximately):
a. The vehicle dash may flash on and off a few times during the process.
b. The low voltage contactors may cycle on and off a few times during the process.
c. Ensure that the 12/24V batteries remain charged during the download.

15. When “Select Devices” screen appears, select the double arrows to the right and click “OK”.

16. Wait about 1 minute.

34 | P a g e
Headquarters: 1815 Rollins Road, Burlingame, CA 94010
East Coast Manufacturing: 1 Whitlee Court, Greenville, SC 29607
West Coast Manufacturing: 383 Cheryl Lane, City of Industry, CA 91789

17. An Error screen may appear, which is normal, simply click “OK”.

18. Wait 1 minute.
19. When the download is complete, the lights on the dash should stop flashing.
20. The DMUX/DWP is now configured and you can proceed to the next task.

35 | P a g e
Headquarters: 1815 Rollins Road, Burlingame, CA 94010
East Coast Manufacturing: 1 Whitlee Court, Greenville, SC 29607
West Coast Manufacturing: 383 Cheryl Lane, City of Industry, CA 91789

Verify and Update Body Software Version
This procedure checks the Powertrain Controller software version and upgrades as necessary.
BTMS HVIL Fault Input

NOTICE! Prior to flashing body software – Check at the dash to verify the
functionality of the BTMS HVIL input.
With Low voltage / Key on, check input M1.7A01, the status light on the dash
maintenance I/O screen should be Green.

GOOD

BAD!

If it is Grey or Red – please verify wiring based on your vehicle schematic to
ensure proper function before proceeding.

This BTMS HVIL wiring will be actively used in the new software release.
If the wiring is not correct, the vehicle will not start and will have an HVIL fault.

The most likely place the wiring is swapped is at the connections to the
Grayson BTMS box.
Only perform wiring checks on this system with the vehicle fully powered off
and locked out!

36 | P a g e
Headquarters: 1815 Rollins Road, Burlingame, CA 94010
East Coast Manufacturing: 1 Whitlee Court, Greenville, SC 29607
West Coast Manufacturing: 383 Cheryl Lane, City of Industry, CA 91789

Contactor Fault Output

NOTICE! Prior to flashing body software – Check at the dash to verify the
functionality of the Pre-Charge Contactor Input.
This functionality is required to protect the vehicles from using the incorrect
software configuration and possibly damaging hardware.
With Low voltage / Key on, check input M1.7E06, the status light on the dash
maintenance I/O screen should be RED.

GOOD

BAD!

If it is Grey or Green – please verify wiring based on your vehicle schematic to
ensure proper function before proceeding.

This Output wiring is subject to proper power being provided by the circuit
breaker number CB318 out of the Rear deck VEC (Pin E connector JC168 / 12V
UNSW). This powers the Mux Group E by applying power to Mux1.7E10.
If the wiring is not correct, the vehicle will not start and will have an HVIL fault.

Only perform wiring checks on this system with the vehicle fully powered off
and locked out!

37 | P a g e
Headquarters: 1815 Rollins Road, Burlingame, CA 94010
East Coast Manufacturing: 1 Whitlee Court, Greenville, SC 29607
West Coast Manufacturing: 383 Cheryl Lane, City of Industry, CA 91789

Verify Current Software Version
1. Connect Proterra Diagnostics tool to the front OBDII connector, and navigate to the Powertrain
Tab.
2. Verify the Vehicle Software version is 40.28 or 40.28x8.

3. In this screenshot, the Body Controller software version (Under the vehicle block at the bottom)
is 40.28x8.
Alternative method:
4. With the vehicle powered on and the dash awake, read the software version from the
Maintenance menu for the “Dash”.
a. To access this menu:
b. Press and hold the down arrow for three seconds.
c. Navigate up/down to “Maintenance” and press the select “O” button.
d. Navigate up/down to “Software Versions” and press the select “O” button.

38 | P a g e
Headquarters: 1815 Rollins Road, Burlingame, CA 94010
East Coast Manufacturing: 1 Whitlee Court, Greenville, SC 29607
West Coast Manufacturing: 383 Cheryl Lane, City of Industry, CA 91789

5. In this screenshot, the Body software version is 40.28 and the “008” in the Body Parameters is
the “x8” revision identifier.
6. If the version is not 40.28 or 40.28x8, proceed to the next section to update the controller
software.

39 | P a g e
Headquarters: 1815 Rollins Road, Burlingame, CA 94010
East Coast Manufacturing: 1 Whitlee Court, Greenville, SC 29607
West Coast Manufacturing: 383 Cheryl Lane, City of Industry, CA 91789

Update Body Controller Software
This procedure updates the Body Controller software version and maintains the body controller
parameter configuration data across the flash download of new software.
12. Ensure you have the latest software file 047344.ZR32A_A in a known location on the service
technician’s computer (Folder or Desktop).
IMPORTANT! NEVER access the software from a remote server or from a USB memory device,
ALWAYS copy the software files to your computer hard drive and access the software from this
location.
13. Turn ON the 12/24V rear Vehicle Master Disconnect located behind the vehicle curbside rear
upper access panel.
14. Turn OFF the bus Master Switch at the Driver's Workplace and ensure the Dash screen is
OFF.
15. Turn ON the bus “programming switch” inside the street side wheel well box.
16. After connecting to the vehicle using the Proterra Diagnostic tool at the front OBDII Port
(SSWW Ecab), navigate to the Configuration Tab.
17. Wait at least 10 seconds after starting the tool, then click the “Get Parameters” button at the
top of the page.
a. NOTE: This ensures that we have a backup copy of the original configuration
parameters stored in a “zip” file, contained in the C:/Logs folder on your
computer in case we need to refer to it later.

40 | P a g e
Headquarters: 1815 Rollins Road, Burlingame, CA 94010
East Coast Manufacturing: 1 Whitlee Court, Greenville, SC 29607
West Coast Manufacturing: 383 Cheryl Lane, City of Industry, CA 91789

18. After the parameters file is saved, and the parameter list is fully populated, write down the
following values from the list:
a. NOTE: These will have to be manually cross checked at the end of this download
process to ensure they are consistent after flash.
b. If not checked and updated after this download, the software download process
will deploy the default values.
c. Additional point: With updated 5 Position switch logic, the front door will now be
able to “auto close” after a sensitive edge / obstruction trip event. This new
feature may affect the customer’s desire to have the front sensitive edge
disabled. Please verify with a customer representative and demonstrate this new
door control behavior.

EEPROM / Parameter Name:

Value (before
software download):

Default Value

EP_bo_DOOR_FSensitiveEdgeReopenDisable

False (0)

EP_bo_EXLI_DaytimeRunningLightsActive

False (0)

EP_bo_RAMP_ParkBrakeForRamp

True (1)

19. Now we are ready to click the Body Firmware “Start Flash” Button.

Beside Body
Firmware, Click
Start Flash

41 | P a g e
Headquarters: 1815 Rollins Road, Burlingame, CA 94010
East Coast Manufacturing: 1 Whitlee Court, Greenville, SC 29607
West Coast Manufacturing: 383 Cheryl Lane, City of Industry, CA 91789

20. The following screen will be displayed. Navigate to the location where you stored the
configuration file earlier. Select the software file downloaded previously and click “Open” to
load the file.

Select the file and
Click Open

21. The Proterra Diagnostic Tool will connect to the device, and the following screens are
displayed.

42 | P a g e
Headquarters: 1815 Rollins Road, Burlingame, CA 94010
East Coast Manufacturing: 1 Whitlee Court, Greenville, SC 29607
West Coast Manufacturing: 383 Cheryl Lane, City of Industry, CA 91789

22. The software update will take several minutes to complete. When the update is complete the
following screen will be displayed. Click the “Finish” button to complete the update process.

43 | P a g e
Headquarters: 1815 Rollins Road, Burlingame, CA 94010
East Coast Manufacturing: 1 Whitlee Court, Greenville, SC 29607
West Coast Manufacturing: 383 Cheryl Lane, City of Industry, CA 91789

Store/Import Customer Configuration Dataset
After completing the first vehicle in a customer’s fleet, it is recommended that you download the final
body controller parameters for that vehicle in order to use them to ensure consistency with the rest of
the fleet.
Store Parameters
1. After first vehicle has been completed and verified, disconnect the Proterra Diagnostic tool and
then re-connect.
2. Navigate to the Configuration tab and click the “Get Parameters” button. This will download the
latest parameter set to the “C:\Logs” folder on your machine.
3. In windows file explorer, navigate to the C:\Logs folder. Copy the latest downloaded *.zip file to
your desktop location with the Service Bulletin files.

Copy!

4. Add a name to the end of the file so that you can more easily remember to which fleet it
applies.

5. Copy this parameter file back up to the network folder location for uploading configuration files:
\\BUS.local\files\Engineering\Service Bulletins\Service Bulletin Files for SC-1997\Configuration_Upload
44 | P a g e
Headquarters: 1815 Rollins Road, Burlingame, CA 94010
East Coast Manufacturing: 1 Whitlee Court, Greenville, SC 29607
West Coast Manufacturing: 383 Cheryl Lane, City of Industry, CA 91789

Import Parameters
For the second and rest of the fleet vehicles, use the configuration file that was created previously for
this customer configuration. In this example, we are using “Greenlink”:
1. After downloading vehicle software, disconnect and re-connect the Proterra diagnostic tool.
2. Once connected, wait at least ten seconds then click the “Configuration” Button to open the
configuration screen, and click the “IMPORT PARAMS” button at the top of the screen.

Click IMPORT
PARAMS
Button

Click Configuration
Button

3. In the pop-up window, select the file created previously:

4. Click OK, and the EEPROM Parameters and Values from the vehicle will be downloaded and
saved to the body controller.
5. When this process has finished, disconnect the diagnostic tool by clicking “Disconnect” on the
Home Tab.
6. Turn off the Programming switch and all dash switches, and allow the Body Controller 10
seconds to go to sleep. Verify at the ZR32 mounted on the ECAB that the very dim orange
blinking light inside the A connector has extinguished (this indicates fully asleep).

Dim Orange
Blinking Light

45 | P a g e
Headquarters: 1815 Rollins Road, Burlingame, CA 94010
East Coast Manufacturing: 1 Whitlee Court, Greenville, SC 29607
West Coast Manufacturing: 383 Cheryl Lane, City of Industry, CA 91789

Verification of Customer Configuration
For all customer vehicles, please verify after programming that any customer-specific features or
functions operate as expected.
Particularly, ensure these three EEPROMs have been updated properly for this customer’s
desired configuration:
EEPROM / Parameter Name:
EP_bo_DOOR_FSensitiveEdgeReopenDisable
EP_bo_EXLI_DaytimeRunningLightsActive
EP_bo_RAMP_ParkBrakeForRamp

IMPORTANT! After verifying customer configuration, ensure that the vehicle powers up with no faults
and is capable of Charging at the Charge Station.

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Headquarters: 1815 Rollins Road, Burlingame, CA 94010
East Coast Manufacturing: 1 Whitlee Court, Greenville, SC 29607
West Coast Manufacturing: 383 Cheryl Lane, City of Industry, CA 91789

Verify Traction Motor Software Version
This procedure checks the Traction Motor Inverter software version for verification purposes only.
Firmware update was covered in a previous service bulletin but is important to have consistent for
proper vehicle software operation.

Verify Current Software Version
1. Connect Proterra Diagnostics tool to either front or rear OBDII connector, and navigate to the
Powertrain Tab.
2. Verify the Traction Motor Inverter Software version is 4.12.7, shown in the screenshot below
at the bottom middle of the page.

3. If the Traction Motor Inverter software version is not 4.12.7, contact Proterra Customer Service
for assistance with updating this device. It requires special tools that are not available at every
customer location.

47 | P a g e
Headquarters: 1815 Rollins Road, Burlingame, CA 94010
East Coast Manufacturing: 1 Whitlee Court, Greenville, SC 29607
West Coast Manufacturing: 383 Cheryl Lane, City of Industry, CA 91789

Check List for Software Versions Deployed
The following check list should be used for verifying the software versions downloaded during the
Service Campaign.

Device

Software Version

BMS - Pack 1 SC

117340A

BMS - Pack 2 SC

117340A

BMS - Pack 3 SC

117340A

BMS - Pack 4 SC

117340A

BMS - Pack 1 Main

117340D

BMS - Pack 2 Main

117340D

BMS - Pack 3 Main

117340D

BMS - Pack 4 Main

117340D

Battery Master ESM

2.0.0

Charge Controller

2.0.4 or

Verified By

Name and Date

2.1.4

Powertrain

2.4.1
2.5.1 (SEPTA)
2.6.1 (NYCT)

Dash

200126 v 006

Body Controller

40.28x8

Traction Motor

4.12.7

48 | P a g e
Headquarters: 1815 Rollins Road, Burlingame, CA 94010
East Coast Manufacturing: 1 Whitlee Court, Greenville, SC 29607
West Coast Manufacturing: 383 Cheryl Lane, City of Industry, CA 91789