Daimler Truck
North America LLC

Field Service Campaign

March 2024
SF681 A-C
(Revised April 2024)

Subject: eCascadia Software Package Update
Models Affected: Specific model years 2023-2024 Freightliner
eCascadia vehicles, manufactured May 16, 2022, through
September 19, 2023.

General Information
REVISION: Work instructions have been revised: Steps 43 & 44 for Groups A & B, Steps 20 & 21 for Group C.
Daimler Truck North America LLC (DTNA), on behalf of its Freightliner Trucks division, is initiating Field Service
Campaign SF681 A-C to modify the vehicles mentioned above.
Certain eCascadia vehicles require eCPC (Electric Common Powertrain Controller) and BMS (Battery
Monitoring System) software updates to resolve multiple issues.
The DCB (Direct Current Box) module(s) will be replaced, and the software will be updated. Vehicles in group A
will also receive a coolant plumbing update.
There are approximately 378 vehicles involved in this campaign.
Additional Repairs
Dealers must complete all outstanding recall and field service campaigns prior to the sale or delivery of a vehicle.
A dealer will be liable for any progressive damage that results from its failure to complete campaigns before sale
or delivery of a vehicle.
Owners may be liable for any progressive damage that results from failure to complete campaigns within a
reasonable time after receiving notification.
Please contact Warranty Campaigns for consideration of additional charges prior to performing the repair.

Work Instructions
Please refer to the attached work instructions. Prior to performing the campaign, check the vehicle for a
completion sticker (Form WAR261).

Replacement Parts
Replacement parts are now available and can be obtained by ordering the kit and/or part number(s) listed below
from your facing Parts Distribution Center (PDC).
If our records show your dealership has ordered any vehicle(s) involved in campaign number SF681, a list of the
customers and vehicle identification numbers will be available in OWL (Online Warranty Link), found on the DTNA
Portal. Please refer to this list when ordering parts for this campaign.

Page 1

Daimler Truck
North America LLC

Field Service Campaign

March 2024
SF681 A-C
(Revised April 2024)
Table 1 - Replacement Parts for SF681
Campaign
Number

Part Number

SF681 A

SF681 B
SF681 C
ALL GROUPS

Part Description

Qty.

66-32674-003

DCB,HV CHRGNG CNTRL UNT 1,EMG

1

66-32674-004
A05-36413-002

DCB,HV CHRGNG CNTRL UNT 2,EMG
PIPE-BATT,BATT1,HOSE

1
1

A05-36639-001

PIPE-BATT,BATT-3/2,HOSE

1

05-37474-000

HOSE BATT-VENT, ID 9.5

1

05-37580-000
05-37579-000
23-12691-003

BRKT-BATTERY VENTLINE,LFTNG
BRKT-BATTERY VENTLINE,PMP ,EP4
CLAMP-HOSE,CONSTANT TNSN,.375

1
1
4

23-12485-125

CLAMP-WORM,CONSTANT,1-1/4 HOSE

5

23-14234-001
23-13476-000

CLAMP-BEAM,5.5-8.7
TIE-CLAMP,.5W,15L,4.13BUNDLE

3
2

23-14137-001
05-36390-407

CABLE TIE-FIR TREE MOUNT,TYC
FITTING-NORMA,Y CONN,NW7

4
1

23-12905-030
23-14451-114

SCREW-CAP,HEX,M14X30,10.9 ZNC
NUT-HEX,LKG,VLH,M14X1.5

1
1

66-32674-003

DCB,HV CHRGNG CNTRL UNT 1,EMG

1

66-32674-004
66-32674-002
WAR261

DCB,HV CHRGNG CNTRL UNT 2,EMG
DCB,HV CHRGNG CNTRL UNT 1,EMG
BLANK COMPLETION STICKER

1
1
1

Table 1

Removed Parts
U.S. and Canadian Dealers, please follow Warranty Failed Parts Tracking shipping instructions for the
disposition of all removed parts. Export distributors, please destroy removed parts unless otherwise advised.

Labor Allowance
Table 2 - Labor Allowance
Campaign
Number
SF681 A
SF681 B
SF681 C

Procedure

Time Allowed
(hours)

SRT Code

Corrective Action

5.8

996-F213A

12-Repair Recall/Campaign

4.3

996-F213B

12-Repair Recall/Campaign

4.2

996-F213C

12-Repair Recall/Campaign

Replace Both Single & Double-Port DCB Modules,
Update eCPC & BMS Software,
Repair Coolant Pipe Assy
Replace Both Single & Double-Port DCB Modules,
Update eCPC & BMS Software
Replace Single-Port DCB Module,
Update eCPC & BMS Software

Table 2

IMPORTANT: When the campaign has been completed, locate the base completion label in the appropriate location on the vehicle, and attach the gray completion sticker provided in the field service kit (Form WAR261). If
the vehicle does not have a base completion label, clean a spot on the appropriate location of the vehicle and
first attach the base completion label (Form WAR259). If a field service kit is not required or there is no completion sticker in the kit, write the campaign number on a blank sticker and attach it to the base completion label.

Page 2

Daimler Truck
North America LLC

Field Service Campaign

March 2024
SF681 A-C
(Revised April 2024)

Claims for Credit
You will be reimbursed for your parts, labor, and handling (landed cost for Export Distributors) by submitting
your claim through the warranty system within 30 days of completing this campaign. Please reference the
following information in OWL:
• Claim type is Field Service Campaign.
• In the Campaign field, enter the campaign number and appropriate group (SF681-A, SF681-B, etc.).
• In the Primary Failed Part field, enter 25-SF681-000.
• In the Parts section, enter the appropriate part number(s) as shown in the Replacement Parts Table.
• In the Labor section, enter the appropriate SRT from the Labor Allowance Table. Administrative time will
be included automatically as SRT 939-6010A for 0.3 hours.
• The VMRS Component Code is F99-999-005 and the Cause Code is A1 - Campaign.
• This Field Service Campaign will terminate on March 31, 2025. Dealers will be notified of any changes
to the termination date via an Important Campaign Information Letter (ICI) posted on the DTNA Portal.
IMPORTANT: OWL must be viewed prior to beginning work to ensure the vehicle is involved and the campaign
has not previously been completed. Check for a completion sticker before beginning work.
All claims must be submitted within 30 days of the repair and within 30 days of the termination date of the
campaign. U.S. and Canadian Dealers: All excess inventory to be returned to the PDC following the conclusion
of the campaign must be returned in resaleable condition to the Memphis PDC within 90 days from the
termination date. Please submit a PAR to request return to the Memphis PDC. (Canadian dealers should return
the kits to their facing PDC.) Export Distributors: Excess inventory is not returnable.
For questions, U.S. and Canadian dealers, contact the Warranty Campaigns Department using the Warranty
Support Center (WSC) app located on the DTNA Portal. Export distributors, submit a WSC inquiry, or contact
your International Service Manager.

Page 3

Daimler Truck
North America LLC

Field Service Campaign

March 2024
SF681 A-C

Copy of Notice to Owners
Subject: eCascadia Software Package Update
Daimler Truck North America LLC (DTNA), on behalf of its Freightliner Trucks division, is initiating Field Service
Campaign SF681 A-C to modify specific model years 2023-2024 Freightliner eCascadia vehicles,
manufactured May 16, 2022, through September 19, 2023.
Certain eCascadia vehicles require eCPC (Electric Common Powertrain Controller) and BMS (Battery
Monitoring System) software updates to resolve multiple issues.
The DCB (Direct Current Box) module(s) will be replaced, and the software will be updated. Vehicles in group A
will also receive a coolant plumbing update.
Please contact an authorized DTNA dealer to arrange to have the campaign performed and to ensure that parts
are available at the dealership. The campaign will take approximately four to six hours and will be performed
free of charge. To locate an authorized dealer, search online at northamerica.daimlertruck.com/contact-us.
Scroll down to “Locate a Dealer,” and select the appropriate brand.
This Field Service Campaign will terminate on March 31, 2025. Please make sure the campaign is completed
prior to this date. Work completed after this date will be done at the customer’s expense.
As stated in the terms of your express limited warranty, DTNA will not pay for any damage caused by failure to
properly maintain your vehicle. DTNA considers the work necessary under this campaign to be proper
maintenance and will, therefore, not pay for any damage to your vehicle caused by your failure to have the
repairs that are the subject of this campaign performed in a reasonable time.
Contact the Warranty Campaigns Department at (800) 547-0712, from 7 a.m. to 4 p.m. Pacific Time, Monday
through Friday, e-mail address [email protected], or the Customer Assistance
Center at (800) 385-4357, if you have any questions or need additional information.
WARRANTY CAMPAIGNS DEPARTMENT
Enclosure

Page 4

Daimler Truck
North America LLC

Field Service Campaign

March 2024
SF681 A-C
(Revised April 2024)

Work Instructions
Subject: eCascadia Software Package Update
Models Affected: Specific model years 2023-2024 Freightliner
eCascadia vehicles, manufactured May 16, 2022, through
September 19, 2023.
REVISION: Work instructions have been revised: Steps 43 & 44 for Groups A & B, Steps 20 & 21 for Group C.

SF681 A: Replacement of Direct Current Box (DCB) Modules &
Coolant Plumbing Update
1.

Check the base label (Form WAR259) for a completion sticker for SF681 (Form WAR261), indicating this
work has been done. The base label is usually located on the passenger-side door, about 12 inches (30 cm)
below the door latch. If a completion sticker is present, no work is needed. If a completion sticker is
not present, proceed to the next step.

2.

Park the vehicle on a level surface, place the vehicle in neutral, shut down the vehicle, and set the parking
brake. Chock the tires.

DANGER
Service and repair of the electric vehicle should only be performed by technicians that have completed
HV2 or HV3 Daimler Safety Training. Decommissioning and commissioning of the HV system should
only be performed by technicians that have completed HV3 Daimler Safety training. To prevent personal
injury or death, or damage to the electric system, do not attempt repairs yourself.
Decommission the vehicle and verify the high voltage system is shut down. Failure to follow these
steps could result in serious personal injury or death.
3.

Decommission the vehicle. For instructions, see Section 08.08 of the eCascadia Workshop Manual.

Page 5

Daimler Truck
North America LLC

Field Service Campaign

March 2024
SF681 A-C
(Revised April 2024)

4.

Remove the left-hand side battery deck plate. See Fig. 1. For instructions, see Section 31.05 of the eCascadia Workshop Manual.

5.

Remove the left-hand side battery protection cover that is attached to the side impact protection assembly.
See Fig. 1.
1

2

3

10/21/2021

1.
2.
3.
4.

4

f080357

Battery Protection Cover
Side Impact Protection Assembly
DC Box
Left-Hand Side Battery Deck Plate
Fig. 1, Removal of Battery Protection Cover

6.

Remove the side impact protection. For instructions, see Section 31.03, Subject 100 of the eCascadia
Workshop Manual.

7.

Drain the battery cooling circuit.

8.

Remove the high voltage cable clamps.

IMPORTANT: High-voltage connectors need to be kept clean and clear of debris, fluids, and damage. A dirty or
damaged connector can cause problems for energy transfer within the cable or high voltage components and
can lead to high voltage system failures.
NOTE: To ensure the high voltage connectors are installed vertically during installation, use the tool
(DSNEMG022008) to connect the three high voltage connectors.
9.

Remove the high voltage connectors from the DC boxes.

10.

Remove the fasteners from the ground cables, then disconnect the ground cables.

11.

Disconnect the low voltage cable connectors from the DC boxes and the front side of the ground bracket.

12.

Gently move the high voltage, low voltage, and ground cables out of the way.

13.

Transfer the high voltage connector protective caps from the new DC boxes to the high voltage connections on the DC boxes being removed.

14.

Disconnect the coolant lines from the DC boxes.

Page 6

Daimler Truck
North America LLC

Field Service Campaign

March 2024
SF681 A-C
(Revised April 2024)
15.

Remove the DC box mounting bracket fasteners. See Fig. 2.

02/02/2024

f548467

Fig. 2, DC Box Mounting Bracket Fasteners

16.

Remove the DC boxes and bracket from the vehicle.

17.

Remove the DC boxes from the mounting bracket. See Fig. 3.
1

2

3

4

04/29/2024

1.
2.
3.
4.

f548468

DC Box (forward location)
DC Box (rear location)
Mounting Bracket
Mounting Fasteners
Fig. 3, Removal of DC Boxes

Page 7

Daimler Truck
North America LLC

Field Service Campaign

March 2024
SF681 A-C
(Revised April 2024)
18.

Remove the ground cable support bracket from the front high voltage battery B1 mounting bracket, then
remove the coolant pipe. See Fig. 4.

02/02/2024

f548469

Fig. 4, Ground Cable Support Bracket

19.

Remove the hardline from over the high voltage battery B1. See Fig. 5.

02/02/2024

f548470

Fig. 5, Hardline over the High Voltage Battery B1

20.

Disconnect the frontbox ground cables See Fig. 6, on the next page.

21.

Disconnect the main low voltage harness from the frontbox. Disconnect the LV harness from the coolant
pump. See Fig. 6.

22.

Remove the high voltage cable clamps in the hardline area, and gently move the high voltage cables out
of the way. See Fig. 6.

Page 8

Daimler Truck
North America LLC

Field Service Campaign

March 2024
SF681 A-C
(Revised April 2024)

1
2

3

02/02/2024

f548471

1. Main Frontbox Ground Cable
2. HV Cable Clamps

3. Main Frontbox LV Chassis Harness
Fig. 6, Frontbox Wiring Harness Connections