NHTSA ID Number: 10189769
Manufacturer Communication Number: TSB 21-2039
Summary
Some 2020 Escape/Corsair vehicles equipped with all-wheel drive (AWD) may exhibit a grinding noise during low speed turns from the left rear half shaft area. This may be due to internal contact within the seal. To correct the condition, follow the Service Procedure to replace the left rear half shaft seal.
Model:
2020 Escape
2020 Corsair
Issue: Some 2020 Escape/Corsair vehicles equipped with all-wheel drive (AWD) may exhibit a grinding noise during low speed turns from the left rear halfshaft area. This may be due to internal contact within the seal. To correct the condition, follow the Service Procedure to replace the left rear halfshaft seal.
Action: Follow the Service Procedure to correct the condition on vehicles that meet all of the following criteria:
- 2020 Escape/Corsair
- AWD
- Exhibits a grinding noise during low speed turns from the left rear halfshaft area
NOTE: Part quantity refers to the number of that service part number required, which may be different than the number of individual pieces. Service part numbers contain 1 piece unless otherwise stated. “As Needed” indicates the part is required but the number may vary or is not a whole number; parts can be billed out as non-whole numbers, including less than 1.
Parts
| Part Number | Description | Quantity | |
| CCPZ- 3B477-B | – | Wheel Hub Nut | 1 |
| W720472-S439 | Package Contains 4 Pieces, 2 Pieces Required | Brake Caliper Anchor Bolt | 1 |
| W719466-S439 | Package Contains 4 Pieces, 4 Pieces Required | Wheel Hub Bolt | 1 |
| NZ6Z-3B498-A | – | Halfshaft Retaining Circlip | 1 |
| CV6Z-4B416-A
Last update on 2026-06-10 / Affiliate links / Images from Amazon Product Advertising API | – | Rear Halfshaft Seal | 1 |
6C2Z-4N282-AA | – | Rear Drive Unit Fluid Fill Plug | 1 |
| XY-75W-QL
Last update on 2026-06-10 / Affiliate links / Images from Amazon Product Advertising API | – | Motorcraft® SAE 75W Disconnect Rear Drive Unit Fluid | As Needed |
Service Procedure
CAUTION: It is critical to apply the active torque coupling when installing the halfshaft while performing a repair/replacement of the left rear halfshaft seal. Failure to do so may result in a repeat repair. Refer to WSM, Section 205-05.
1. Replace the left rear halfshaft seal. Refer to Workshop Manual (WSM), Section 205-02.
2 Affected Products
Vehicles
1 Associated Document
Manufacturer Communications
21-2039
16 March 2021
MC-10189769-0001.pdf 112.097KB
- SATISFIES REQUIREMENTS - for gear oil viscosity of SAE 75W80, 75W, 80W and 85W, as well as SAE 30 and SAE 10W30 motor oil
- APPLICATIONS - include differential oil, final drive oil, gear oil and transfer case fluid, this product is not designed for use in most manual transmissions or transaxles with synchronizers, as extreme slipperiness may cause shifting problems
- CONTAINS - additional friction modifiers for suitability with clutch-type limited slip differentials - for most LSDs, no additional friction modifiers are required, known formerly as LightWeight Gear Oil
- POPULAR GEAR OIL FOR - in many late model BMW, Dodge, Ford, GM, Jeep, Lexus, Mercedes-Benz, Ram, Toyota, also popular in many Formula racing transaxles, including Hewland LD-200 and FTR sequential
- WHY RED LINE - Established in 1979, Red Line Products perform & protect better than any on the market. No compromises
- SATISFIES REQUIREMENTS - for gear oil viscosity of SAE 75W80, 75W, 80W and 85W, as well as SAE 30 and SAE 10W30 motor oil
- APPLICATIONS - include differential oil, final drive oil, gear oil and transfer case fluid, this product is not designed for use in most manual transmissions or transaxles with synchronizers, as extreme slipperiness may cause shifting problems
- CONTAINS - additional friction modifiers for suitability with clutch-type limited slip differentials - for most LSDs, no additional friction modifiers are required, known formerly as LightWeight Gear Oil
- POPULAR GEAR OIL FOR - in many late model BMW, Dodge, Ford, GM, Jeep, Lexus, Mercedes-Benz, Ram, Toyota, also popular in many Formula racing transaxles, including Hewland LD-200 and FTR sequential
- WHY RED LINE - Established in 1979, Red Line Products perform & protect better than any on the market. No compromises
- API GL-5 GEAR OIL FOR DRIVETRAINS: Designed for differentials, transfer cases, and gear systems in a wide range of U.S., European, and Asian vehicles
- OEM SPECIFIC FORMULATION: Delivers performance equal to or better than OEM fluids, ensuring smooth gear operation, frictional stability, and gear functionality while preventing shuddering, sticking, and slipping
- OUTSTANDING EXTREME PRESSURE (EP) PROTECTION: Exceptional shear stability and friction control for seamless gear transitions, torque transfer, and superb performance in high horsepower, high-speed, sustained mechanical and thermal loads
- ADVANCED METAL PROTECTION: Formulated to protect brass, copper, and aluminum alloys, outperforming many OEM and premium brands in severe service conditions
- ALL-CLIMATE PERFORMANCE: Superior performance in both extreme heat and cold, down to -50°F, and supports lifetime fill unless otherwise specified by the manufacturer
- SATISFIES REQUIREMENTS - for gear oil viscosity of SAE 75W80, 75W, 80W and 85W, as well as SAE 30 and SAE 10W30 motor oil
- APPLICATIONS - include differential oil, final drive oil, gear oil and transfer case fluid, this product is not designed for use in most manual transmissions or transaxles with synchronizers, as extreme slipperiness may cause shifting problems
- CONTAINS - additional friction modifiers for suitability with clutch-type limited slip differentials - for most LSDs, no additional friction modifiers are required, known formerly as LightWeight Gear Oil
- POPULAR GEAR OIL FOR - in many late model BMW, Dodge, Ford, GM, Jeep, Lexus, Mercedes-Benz, Ram, Toyota, also popular in many Formula racing transaxles, including Hewland LD-200 and FTR sequential
- WHY RED LINE - Established in 1979, Red Line Products perform & protect better than any on the market. No compromises
- FlexFill squeezable pouch releases 2X more fluid with less effort for 3X faster filling vs. traditional bottle packaging
- Contains limited slip for optimal performance of the clutch pack, while also delivering 30% better protection against towing and heavy loads and 1.5X better gear wear protection
- Advanced full synthetic helps prevent noise and reduce chattering, while protecting gear teeth from wearing out prematurely
- High and low temperature protection ranges from -50F to 300F degrees for cold temperature fluidity and high temperature performance
- Fights rust and corrosion with corrosion inhibitors and safeguards against impurities, oxidation and thermal breakdown
Last update on 2026-06-04 / Affiliate links / Images from Amazon Product Advertising API
SEOCONTENT-START
Warranty Status: Eligible under provisions of New Vehicle Limited Warranty (NVLW)/Service Part Warranty (SPW)/Special Service Part (SSP)/Extended Service Plan (ESP) coverage. Limits/policies/prior approvals are not altered by a TSB. NVLW/SPW/SSP/ESP coverage limits are determined by the identified causal part and verified using the OASIS part coverage tool. Labor Times Description Operation No. Time 2020 Escape/Corsair AWD: Replace The Left Rear Halfshaft Seal (Do Not Use With Any Other Labor Operations) 212039A 1.3 Hrs. Repair/Claim Coding Causal Part: 4B416 Condition Code: D8
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