Daimler Truck
North America LLC

Field Service Campaign

October 2023
SF675 A-C
REVISED 11/14/2023

Subject: Western Star Snow Plow Light Harness
Models Affected: Specific model years 2022-2024 Western Star 47X and
49X vehicles, manufactured April 21, 2021, through October 18, 2023.

General Information
REVISION: Table 3, Step 22 (page 61) has been updated, along with the Notes throughout the substeps of Step 22.
Daimler Truck North America LLC (DTNA), on behalf of its wholly owned subsidiary, Western Star Truck Sales, Inc.,
is initiating Field Service Campaign SF675 to modify the vehicles mentioned above.
For certain vehicles, equipped with snow plows, the headlamps are inadvertently allowed to be active when the plow
lights are active, resulting in the possibility of the headlamps reflecting off the rear of the plow, back towards the driver.
A new snow plow light harness and switch will be installed, and the lighting parameters will be updated to deactivate
headlamps when the snow plow lights are activated.
There are approximately 914 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 part numbers listed below from your
facing Parts Distribution Center (PDC).
If our records show your dealership has ordered any vehicle(s) involved in campaign number SF675, a list of the
customers and vehicle identification numbers will be available on the DTNA Portal via OWL. Please refer to this list
when ordering parts for this campaign.
Table 1 - Replacement Parts for SF675
Campaign
Number

Part Number

Part Description

Qty.

SF675 A-C

A66-07494-040
TSU CT44FRT033
TSU CT44FRT034
TSU CT44FRT035
PAC 12110847 L
PAC 15324984 B
23-12537-010
WAR261

SW-MSF,HWD,PLOW LIGHT
PLOW LIGHT DASH HARN ( Fig. 1 )
PLOW INTERFACE GND CHAS HARN ( Fig. 2 )
PLOW INTERFACE GND HOOD HARN ( Fig. 3 )
TERM,BLD,FEM,280 M/P
CABLE SE
FUSE-MINI BLADE,10A,RED
BLANK COMPLETION STICKER

1 ea
1 ea
1 ea
1 ea
1 ea
1 ea
1 ea (Use Dealer Stock)
1 ea

Table 1

Page 1

Daimler Truck
North America LLC

Field Service Campaign

October 2023
SF675 A-C

09/25/2023

f548275

Fig. 1, Inside Cab Dash Harness (TSU CT44FRT033)
09/25/2023

f548274

Fig. 2, Underhoood Plow Harness (TSU CT44FRT034)

09/25/2023

f548276

Fig. 3, Chassis Ground Harness (TSU CT44FRT035)

Page 2

Daimler Truck
North America LLC

Field Service Campaign

October 2023
SF675 A-C

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

Procedure

Time Allowed
(hours)

SRT Code

Corrective Action

SF675 A-C

Install Light Harness & Switch,
Update Lighting Parameters

5.5

996-F169A

12-Repair Recall/Campaign

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.

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 condition code (SF675-A, SF675-B,
etc.)
• In the Primary Failed Part field, enter 25-SF675-000.
• In the Parts section, enter the appropriate part numbers 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 October 31, 2024. 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. Also 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

October 2023
SF675 A-C

Copy of Notice to Owners
Subject: Western Star Snow Plow Light Harness
Daimler Truck North America LLC (DTNA), on behalf of its wholly owned subsidiary, Western Star Truck Sales,
Inc., is initiating Field Service Campaign SF675 to modify specific model years 2022-2024 Western Star 47X
and 49X vehicles, manufactured April 21, 2021, through October 18, 2023.
For certain vehicles, equipped with snow plows, the headlamps are inadvertently allowed to be active when the
plow lights are active, resulting in the possibility of the headlamps reflecting off the rear of the plow, back
towards the driver.
A new snow plow light harness and switch will be installed, and the lighting parameters will be updated to
deactivate headlamps when the snow plow lights are activated.
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 five and one half 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 October 31, 2024. 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

October 2023
SF675 A-C
REVISED 11/14/2023

Work Instructions
Subject: Western Star Snow Plow Light Harness
Models Affected: Specific model years 2022-2024 Western Star 47X and
49X vehicles, manufactured April 21, 2021, through October 18, 2023.

Snow Plow Light Harness
REVISION: Table 3, Step 22 (page 61) has been updated, along with the Notes throughout the substeps of Step 22.
The instructions that follow involve installation of wiring harnesses in the dash and the engine compartment/
hood. To aid in visualizing the repair, the schematics are shown below.
Figure 4 shows the schematic illustrating the snow plow light/headlight modification inside and outside the cab.
Figure 5 shows the schematic illustrating the side marker light ground modification under the hood.

10/10/2023

f548277

Fig. 4, Schematic - Snow Plow Light/Headlight Modification Inside and Outside of the Cab

Page 5

Daimler Truck
North America LLC

Field Service Campaign

October 2023
SF675 A-C

10/10/2023

f548278

Fig. 5, Schematic - Side Marker Light Ground
Modification Under the Hood

1.

Check the base label (Form WAR259) for a completion sticker for SF675 (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, shut down the engine, and set the parking brake. Chock the tires.

3.

Disconnect the battery cables.

4.

Follow the substeps to remove the lower dash covers. For more information, see Section 60.06, Subject
100 of the 47X & 49X Workshop Manual.

Page 6

Daimler Truck
North America LLC

Field Service Campaign

October 2023
SF675 A-C

4.1

Remove the three screws that attach the throttle cover to the dash. Pull the clip loose from the lower
center dash cover. Remove the throttle cover. See Fig. 6.

1
2
4

3

05/29/2020

f602754

1. Screw
2. Throttle Cover

3. Accelerator Pedal
4. Brake Pedal

Fig. 6, Throttle Cover

4.2

Remove the two screws and flange nut from the left-hand side lower dash cover, then remove the
cover. See Fig. 7.

1

2

09/25/2023

1. Screw

f548279

2. Flange Nut

Fig. 7, Left-Hand Side Lower Dash Cover

Page 7

Daimler Truck
North America LLC

Field Service Campaign

October 2023
SF675 A-C
4.3

Remove the two screws from the steering column bolster panel, then remove the panel. See Fig. 8.

1

2
09/25/2023

f548280

1. Screw
2. Steering Column Bolster Panel
Fig. 8, Steering Column Bolster Panel

4.4

Pull the handhold at the lower left corner of the electrical bay cover, then pull the remaining clips
loose from the dash. Remove the electrical bay cover. See Fig. 9.

05/29/2020

Fig. 9, Electrical Bay Cover Handhold

Page 8

f602749

Daimler Truck
North America LLC

Field Service Campaign

October 2023
SF675 A-C

4.5

Remove the seven screws that attach the right-hand lower dash cover to the dash and the electrical
bay housing. Pull the clips loose. Remove the cover. See Fig. 10.
3

1

4

5
2

A

6
7
05/29/2020

f602751

A. For installation, snap the locator clip in place
here first, then install the screws in the sequence
shown.
Fig. 10, Right-Hand Lower Dash Cover Removal

Page 9

Daimler Truck
North America LLC

Field Service Campaign

October 2023
SF675 A-C

4.6

Remove the four screws from the center dash cover, then pull the clip loose from the dash and the
right-hand front wall bracket. Remove the center dash cover. See Fig. 11.

1

2

A

3

4

05/29/2020

f602748

A. For installation, snap the locator clip in place here first, then install the screws in the sequence shown.
Fig. 11, Center Dash Cover Removal

Page 10

Daimler Truck
North America LLC

Field Service Campaign

October 2023
SF675 A-C

5.

Remove the VPDM (Vehicle Power Distribution Module) mounting bolts, lift the VPDM from its mounting
hooks, and lay it down on the floor to gain access to the electrical bay. See Fig. 12 and Fig. 13. For more
information, see Section 54.05, Subject 100 of the 47X & 49X Workshop Manual.

08/10/2016

f546486

Fig. 12, VPDM Lowered to the Floor

09/25/2023

f548281

Fig. 13, Electrical Bay with the VPDM Lowered to the Floor

Page 11

Daimler Truck
North America LLC

Field Service Campaign

October 2023
SF675 A-C

6.

Remove the three mounting bolts from the SSAM (Single Signal Activation Module) mounting bracket, and
lower the SSAM to the floor. See Fig. 14.

09/25/2023

f548282

Fig. 14, SSAM Lowered to the Floor

Page 12

Daimler Truck
North America LLC

Field Service Campaign

October 2023
SF675 A-C

7.

Find the end of the harness (TSU CT44FRT033) with the two blue and two black wires. Attach the first
taped grouping of wires to the harness heading into the SSAM with a zip tie, as shown in Fig. 15.

1

2

3

09/25/2023

1. Blue Wire
2. Black Wire

f548283

3. Zip Tie
4. SSAM
Fig. 15, Routing the Harness to the SSAM

Page 13

4