NHTSA ID Number: 11012563
Manufacturer Communication Number: 37176
TSB/Document Date: 2025-01-07
Summary
This is a Technical Journal: HLCM replacement. open the high-voltage battery
lid and replace the HLCM in workshops
Volvo Car USA LLC
Technical Journal
Technical Journal Title
Ref. No.
HLCM Replacement
TJ 37176.2.0
Issuer (Dept.)
Issue Date
Status Date
12/3/24
12/4/24
Technical Service
Car Market
Partner
Function Group
United States and Canada
3 US 7510 Volvo Car USA
3229
Function Description
Page
Miscellaneous
Page 1 of 4
Attachment
File Name
File Size
TJ 37176_1.pdf
0.5071 MB
TJ-37176_1.mp4
3.3336 MB
TJ-37176_2.mp4
5.5992 MB
Rows beginning with * are modified
Note! If using a printed copy of this Technical Journal, first check for the latest online version.
DESCRIPTION:
If the HLCM needs to be replaced, please follow the instructions under “Service.”
HLCM (High to Low voltage Converter Module)
CVTN (Cell Voltage Temp Node)
CSC Customer Symptom Codes
Code
Description
7B
Starting/Engine does not start/Engine does not turn/No clicking sound at start attempt
DTC Diagnostic Trouble Codes
Control Module
Code
Fault Type
HLCM
P0A9400
Permanent
HLCM
P0A9401
Permanent
HLCM
P0EA521
Permanent
HLCM
P0A9402
Permanent
HLCM
P0A9403
Permanent
HLCM
P0A9404
Permanent
HLCM
P0A9405
Permanent
HLCM
P0A9406
Permanent
HLCM
P0A9408
Permanent
HLCM
P0A9409
Permanent
HLCM
P0EA500
Permanent
Technical Journal 37176.2.0
Control Module
Code
Fault Type
HLCM
P0EA501
Permanent
HLCM
P0EA502
Permanent
HLCM
P0EA503
Permanent
HLCM
P0EA504
Permanent
HLCM
P0EA505
Permanent
HLCM
P0EA506
Permanent
HLCM
P0EA508
Permanent
HLCM
P0EA509
Permanent
Vehicle Type
Type
Eng
Eng
Desc
Sales
Body
Gear
356
Steer
Model Year
Plant
2024-2027
Chassis range
Struc Week
Range
-
202417-202752
SERVICE:
This is a temporary deviation from SPJ 1001328, allowing certified technicians to open the highvoltage battery lid and replace the HLCM in workshops.
Contact Retailer Technical Support via a TIE report to get technical prior approval.
Retailer Technical Support will provide hands-on assistance with this repair. Make sure that all
required tools are available.
The following special tools are needed:
9513157 and 9513156 to lower the high-voltage battery from the vehicle.
You will also require the special tools listed below which are also included in the VIDA repair
instructions:
9997618
9513277
9513177
2 x 9513262
9513176
9513284
9513279
9513255
Note: To remove the battery lid screws, an EP8 socket is required.
Note: The lid sealing material will be delivered in 90 meters length and can be used for more than
one vehicle.
Page 2 of 4
2024-12-04
Technical Journal 37176.2.0
Remove the lid in a well-ventilated area. Wear a breathing mask during the removal of the battery lid
and after the lid has been removed. There will be an electrical smell which dissipates in a short time.
Please see the attached videos (TJ-37143_1.mp4) and (TJ-37143_2.mp4) for help with removing
two of the high-voltage connectors.
After the HLCM has been replaced and before the lid is reinstalled, it is important to reuse the
three soft dampers shown in the picture (TJ 37143_1.pdf). Move the soft damper from the replaced
HLCM to the new one according to the picture.
If needed, use double-sided tape to fasten the soft damper.
Note: Be very careful not to damage the soft dampers.
Note: Do not scrap the four springs according to VIDA. They should be reused since they’re not
included with the new HLCM.
Note: Avoid getting coolant inside the battery when the coolant hoses are released from the HLCM.
Have absorbents or paper to collect any coolant.
Note: Unclip the CVTN before removing the HLCM pipe so there is no risk of getting coolant in the
CVTN.
Note: There are no threads on new HLCMs. Technicians will need to make their own threads with
the fasting screws.
Note: It is best to have four people helping when refitting the battery lid to avoid sealing issues
(one on each side).
Warranty claim info:
To get a warranty claim accepted for a job described in this TJ, use the below VST OP.
Note that the TJ number must be stated in the repair order text.
Failing Part: 36010867
VST Operation Number
VST Operation Number
Description
98590-2
HLCM replace acc. to TJ
36002-3
Software Control Module downloading
VEHICLE REPORT:
Yes, please submit a Vehicle Report. Use concern area “Vehicle Report” and sub-concern area
“Support Needed”, use function group 3229.
To view TJ attachments continue to next page. This TJ has one attachment and
two video files.
2024-12-04
Page 3 of 4
Technical Journal 37176.2.0
Page 4 of 4
2024-12-04
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TSB/Document ID: 37176
Replacement Service Bulletin Number:
MFR Communication Date: 2024-12-05
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ELECTRICAL SYSTEM
MFR Component System:
MFR Component Subsystem:
Previous TSB | Next TSB |
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