NHTSA ID Number: 11001583
Manufacturer Communication Number: TSB 24-2185
TSB/Document Date: 2024-06-12
Summary
This article supersedes TSB 23-2335 to update the TSB title, vehicles affected and parts list. Some 2021-2023 Bronco Sport vehicles equipped with a 1.5L engine built on or before 30-Nov-2022, 2021-2022 Bronco Sport vehicles equipped with a 2.0L engine built on or before 28-Feb-2022, 2020-2022 Escape/Corsair vehicles equipped with 1.5L/2.0L/2.3L engines built on or before 30-Apr-2022, 2020-2022 Escape vehicles equipped with 2.5L full hybrid
electric vehicle (FHEV) powertrain built on or before 31-Mar-2022 may exhibit a chatter/shudder during low speed turning events. This may be due to contamination of the rear drive unit (RDU) fluid through the RDU vent hose. To correct the condition, follow the Service Procedure to replace the RDU vent hose.
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TECHNICAL SERVICE BULLETIN
1.5/2.0/2.3/2.5L - Chatter/Shudder During Low Speed Turning Events
24-2185
06 June 2024
This bulletin supersedes 23-2335. Reason for update: add 2.5L FHEV and update the part list
Model:
Ford
2021-2023 Bronco Sport
Engine: 1.5L EcoBoost - Vehicles built on or before 30-Nov-2022
Engine: 2.0L EcoBoost - Vehicles built on or before 28-Feb-2022
2020-2022 Escape
Engine: 1.5L EcoBoost
Engine: 2.0L EcoBoost
Engine: 2.5L FHEV
Built on or before 30-Apr-2022
Lincoln
2020-2022 Corsair
Engine: 2.0L EcoBoost
Engine: 2.3L EcoBoost
Built on or before 30-Apr-2022
Markets: North American markets only
Issue: Some 2021-2023 Bronco Sport vehicles equipped with a 1.5L engine and built on or before 30-Nov-2022,
2021-2022 Bronco Sport vehicles equipped with a 2.0L engine and built on or before 28-Feb-2022, 2020-2022
Escape/Corsair vehicles equipped with 1.5L/2.0L/2.3L engines and built on or before 30-Apr-2022, 2020-2022
Escape vehicles equipped with 2.5L FHEV powertrain and built on or before 31-Mar-2022 may exhibit a
chatter/shudder during low speed turning events. This may be due to contamination of the RDU fluid through the
RDU vent hose. To correct the condition, follow the Service Procedure to replace the RDU vent hose.
Action: Follow the Service Procedure to correct the condition on vehicles that meet all of the following criteria:
• One of the following vehicles:
- 2021-2023 Bronco Sport built on or before 30-Nov-2022 equipped with a 1.5L engine
- 2021-2022 Bronco Sport built on or before 28-Feb-2022 equipped with a 2.0L engine
- 2020-2022 Escape/Corsair built on or before 30-Apr-2022 equipped with 1.5L/2.0/2.3L engines
- 2020-2022 Escape built on or before 31-Mar-2022 equipped with 2.5L FHEV powertrain
• Exhibits a chatter/shudder during low speed turning events
Parts
Service Part
Number
Claim
Quantity
Package Order
Quantity
Number in
Package
Description
K2GZ-4022-M
1
1
1
RDU Vent Hose (Bronco Sport 1.5L,
Escape 1.5L/2.0L)
LX6Z-4022-C
1
1
1
RDU Vent Hose (Bronco Sport 2.0L)
K2GZ-4022-L
1
1
1
RDU Vent Hose (Corsair)
LX6Z-4022-H
1
1
1
RDU Vent Hose (Escape 2.5L FHEV)
1
1
4
Stud Rivet
2
2
1
As Needed
As Needed
Motorcraft® Seam Sealer
As Needed
As Needed
Motorcraft® Disconnect Rear Drive Unit
Fluid
Claim Quantity refers to the total number of individual pieces required to repair the vehicle.
Package Order Quantity refers to the amount of the service part number package(s) required to repair the vehicle.
Number In Package refers to the number of individual pieces included in a service part number package.
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As Needed indicates the part is necessary but amount of the part may vary and/or is not a whole number. Parts can
be billed out as non-whole numbers, including less than 1.
Special Tool(s)
Hand Stud Rivet Setter Kit
Metric Item #AST1455
Warranty Status: Eligible under provisions of New Vehicle Limited Warranty (NVLW)/Service Part Warranty
(SPW)/Service Part New Vehicle (SPNV)/Extended Service Plan (ESP) coverage. Limits/policies/prior approvals are
not altered by a TSB. NVLW/SPW/SPNV/ESP coverage limits are determined by the identified causal part and
verified using the OASIS part coverage tool.
Labor Times
Operation
No.
Description
Time
2020-2022 Escape AWD 1.5L/2.0L/2.5L: Replace The RDU Vent Hose Following The Service
Procedure (Do Not Use With Any Other Labor Operations)
242185A
0.9
Hrs.
2020-2022 Corsair: 2.0L/2.3L: Replace The RDU Vent Hose Following The Service
Procedure (Do Not Use With Any Other Labor Operations)
242185B
0.9
Hrs.
2021-2022 Bronco Sport 2.0L, 2021-2023 Bronco Sport 1.5L: Replace The RDU Vent Hose
Following The Service Procedure (Do Not Use With Any Other Labor Operations)
242185C
0.9
Hrs.
Repair/Claim Coding
Causal Part:
4022
Condition Code: 07
Service Procedure
1. Remove the right rear fender splash shield retaining pin and fold back the right rear fender splash shield to inspect
the RDU vent hose. (Figures 1-2)
Figure 1
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Figure 2
2. Inspect the RDU vent hose mounted behind the right rear fender splash shield. Is the vehicle equipped with the
updated RDU vent hose as shown in the image with the green check mark in Figure 3?
Figure 3
(1). Yes - this article does not apply. Continue with normal diagnosis.
(2). No - proceed to Step 3.
3. Remove the right rear wheel. Refer to WSM, Section 204-04A.
4. Remove the retainers and screws from the right rear fender splash shield shown in Figures 4-6. Lower and fold the
right rear fender splash shield in front of the brake caliper to access the RDU vent hose and upper section of the
wheel well.
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Figure 4
Figure 5
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Figure 6
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5. Disconnect the RDU vent hose retainers. (Figure 7)
Figure 7
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6. Remove the rear differential vent hose and ground strap bolt from the RDU and position aside. (Figure 8)
Figure 8 - Bronco Sport 1.5L/Escape/Corsair shown, Bronco Sport 2.0L
7. Remove the ground strap bolt from the body. (Figure 9)
Figure 9
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8. Detach the hose retainer and remove the RDU vent hose and ground cable assembly. (Figure 10)
Figure 10
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9. Position the new RDU vent hose and ground strap assembly and attach the hose retainers. (Figures 7 and 10)
10. Install the bolt to attach the ground strap to the body. Tighten to 12 Nm (106 lb.in). (Figure 9)
11. Install the new RDU vent hose onto the RDU. (Figure 8)
12. Install the bolt to secure ground cable onto RDU. Tighten to 12 Nm (106 lb.in). (Figure 8)
13. Using the new retainer at the end of the new RDU vent hose, position the hose vertically so the form of the hose
follows the inner arch of the wheel well. Use a tool or a marker to mark the location on the body to drill a hole.
(Figure 11)
Figure 11
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14. Position the RDU vent hose aside.
CAUTION: A depth stopper on the drill bit is necessary to prevent damage to the interior trim.
15. Using a 10 mm (25/64 in.) drill bit with a depth stopper that leaves only 7 mm (1/4 in.) of the end of the drill bit
exposed, drill a hole at the location marked in Step 13.
16. Deburr and clean the hole drilled in Step 15. Temporarily dry fit the stud rivet in the body to make sure the stud
rivet is properly seated, then remove the stud rivet.
17. Apply a generous amount of sealant to the body side of the stud rivet. (Figure 12)
Figure 12
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CAUTION: Failure to properly seal the stud rivet could lead to water entry into the passenger area.
18. Insert the stud rivet and secure using the stud rivet tool.
19. Spread the excess sealant around the rivet collar as well as the base of the stud to confirm adequate sealing.
(Figure 13)
NOTE: It is not necessary to wait for the sealant to dry before reassembly.
Figure 13
20. Attach the hose retainer to the new stud.
21. Reassemble the right rear fender splash shield and secure using the retainers and locations shown in Figures 46.
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22. Install the right rear wheel. Refer to WSM, Section 204-04A.
23. Drain and fill the RDU. Refer to WSM, Section 205-02A.
© 2024 Ford Motor Company
All rights reserved.
NOTE: The information in Technical Service Bulletins is intended for use by trained, professional technicians with the knowledge, tools, and
equipment to do the job properly and safely. It informs these technicians of conditions that may occur on some vehicles, or provides information
that could assist in proper vehicle service. The procedures should not be performed by "do-it-yourselfers". Do not assume that a condition
described affects your car or truck. Contact a Ford or Lincoln dealership to determine whether the Bulletin applies to your vehicle. Warranty Policy
and Extended Service Plan documentation determine Warranty and/or Extended Service Plan coverage unless stated otherwise in the TSB article.
The information in this Technical Service Bulletin (TSB) was current at the time of printing. Ford Motor Company reserves the right to supersede
this information with updates. The most recent information is available through Ford Motor Company's on-line technical resources.
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TSB/Document ID: TSB 24-2185
Replacement Service Bulletin Number:
MFR Communication Date: 2024-06-07
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: POWER TRAIN
MFR Component System:
MFR Component Subsystem:
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