NHTSA ID Number: 11020526
Manufacturer Communication Number: 35755
TSB/Document Date: 2025-07-09
Summary
This is a Technical Journal: BEV and LR-PHEV SW Update for High Voltage Battery
Balancer. The Balancer software must be upgraded to version OTG_192-411899-H00-029 or higher
Volvo Car USA LLC
Technical Journal
Technical Journal Title
Ref. No.
SW Updates for High Voltage Battery Balancer (Information Only)
TJ 35755.1.3
Issuer (Dept.)
Issue Date
Status Date
5/7/25
5/15/25
Technical Service
Car Market
Partner
Function Group
United States and Canada
3 US 7510 Volvo Car USA
3119
Function Description
Page
Miscellaneous
Page 1 of 10
Attachment
File Name
File Size
ST-238-2022-02-28.pdf
3.3357 MB
Rows beginning with * are modified
Note! If using a printed copy of this Technical Journal, first check for the latest online version.
DESCRIPTION:
*Updated Vehicle Type
*Updated Service information
Definitions:
HV = High Voltage
SW = Software
The HV Battery Module Balancer (part number 9814249) is designed to receive software updates.
In order for the HV Battery Module Balancer to work properly it must have the latest software as per
the instructions outlined in ST-238-2022-02-23 (attached).
See Service section for more details.
CSC Customer Symptom Codes
Code
Description
3L
Technician information/Repair information/Not for warranty use
DTC Diagnostic Trouble Codes
Vehicle Type
Type
Eng
224
BK
224
BR
224
H6
Eng
Desc
Chassis
range
Struc Week
Range
2019-2022
-
201917-999952
B1FPHEV
2019-2022
-
201917-999952
BH6PHEV
2022-9999
-
202147-999952
Sales
Body
Gear
Steer
Model Year
Plant
Technical Journal 35755.1.3
Type
Eng
225
BK
225
BR
Eng
Desc
Sales
Body
Gear
Steer
B1FPHEV
Chassis
range
Struc Week
Range
2019-2022
-
201917-999952
2019-2022
-
201917-999952
Model Year
Plant
225
H6
BH6PHEV
2022-9999
-
202147-999952
238
BC
B1BPHEV
2018-2022
-
201717-999952
238
BR
B1FPHEV
2018-2022
-
201717-999952
238
H6
BH6PHEV
2022-9999
-
202147-999952
246
BK
B1LPHEV
2020-2022
-
201917-999952
246
BR
B1FPHEV
2018-2022
-
201717-999952
246
H6
BH6PHEV
2022-9999
-
202147-999952
256
BC
B1BPHEV
2016-2017
-
201546-999952
256
BK
B1LPHEV
2020-2022
-
201917-999952
256
BR
B1FPHEV
2018-2022
-
201717-999952
256
H6
BH6PHEV
2022-9999
-
202147-999952
SERVICE:
The Balancer software must be upgraded to version OTG_192-411899-H00-029 or higher.
Failure to perform the necessary software update prior to attempting communication with
an HV module from one of the vehicles listed above may result in damage to the HV Battery
Module Balancer and/or HV battery module and will require the unit to be taken out of
service for repair.
Please refer to ST-238-2022-02-23 (attached) for full update instructions.
*The latest software is available at the Midtronics homepage.
https://europe.midtronics.com/software-updates/
Use the following login credentials:
Username: volvo
Password: Volvo
Note: the username and password are case sensitive.
VEHICLE REPORT:
Yes, please submit a Vehicle Report if the service solution described in this TJ has no effect. Use
concern “Vehicle Report,” sub concern area “Support Needed,” and function group 3119.
To view TJ attachment continue to next page. This TJ has one attachment.
Page 2 of 10
2025-05-15
Service and Parts Business
Special Tools Bulletin
TITLE:
High Voltage (HV) Module Balancer Tool
NO:
238
ISSUE DATE:
CAR MARKET:
2020-03-18
STATUS DATE:
United States and
Canada
2022-02-28
Page 1 of 8
“Right first time in Time”
All tools have been classified as required, and will be allocated and billed to all U.S. and Canadian
retailers by Volvo.
Tool orders are being handled by the Volvo Parts Operations and the Volvo Parts DC’s.
When purchased new, balancer tool 9814249 may require a software update. Verify the new unit
has the latest software installed. Failure to do so could result in the balancer requiring service.
See Software Update section (Page 4) for latest version and instructions on how to update.
9989915
9513162
9513192
•
•
•
•
3m US Power Cord (Warranty and Repair see SMB 00-437)
(A720 Cable Kit) (Warranty and Repair see SMB 00-437)
BEV Adapter (IME 2404 see page 7) (Warranty and Repair see SMB 00-437)
2M Charging Cable (15A)
2M Cell Monitoring Cable
PHEV SPA Battery Interface
PHEV CMA Battery Interface
Service
Personnel:
Read and
initial
SERVICE
MANAGER
PARTS
MANAGER
WORKSHOP
FOREMAN
SERVICE TECHNICIANS
Produced and printed in the USA and available as an electronic document.
© 2022 VOLVO CAR USA, LLC
Special Tools Bulletin 238
Usability
Module Balance
•
•
•
Technician enters target voltage
Technician connects to module
xMB charges/discharges to set voltage to match other modules in pack
Transportation Discharge
•
•
Technician connects to module
xMB charges/discharges to preset voltage (under 30% SOC)
Module Diagnostics
•
•
Technician connects to module
xMB reads cell voltages/temperatures for tech to confirm cell issue
Product Specifications
Power:
• Input: 100 – 240, 50/60 Hz; 12A max.
• Output: 80 V, 15A
• Charge Cables
• 2m
• Power Cord: Accepts C19 locking connector for region-specific
• United States: NEMA 5-15 termination, rated 15A/125V UL CSA
• Lithium ion battery chemistry
Page 2 of 8
2022-02-23
Special Tools Bulletin 238
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TSB/Document ID: 35755
Replacement Service Bulletin Number:
MFR Communication Date: 2025-05-16
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ELECTRICAL SYSTEM
MFR Component System:
MFR Component Subsystem:
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