NHTSA ID Number: 10201627
Manufacturer Communication Number: TSB 21-2307
Summary
Some 2021 Mustang
Mach-E vehicles built on or before 01-Jul-2021 may experience a water leak into the liftgate. This may be due to water intruding past the seals on the liftgate mounted rear lamp assemblies. To correct the condition, follow the Service Procedure to seal the lamp cavities.
Model:
2021 Mustang Mach-E
Issue: Some 2021 Mustang Mach-E vehicles built on or before 01-Jul-2021 may experience a water leak into the liftgate. This may be due to water intruding past the seals on the liftgate mounted rear lamp assemblies. To correct the condition, follow the Service Procedure to seal the lamp cavities.
Action: Follow the Service Procedure steps to correct the condition on vehicles that meet all of the following criteria:
Service Procedure
1. Remove the liftgate mounted rear lamp assemblies. Refer to Workshop Manual (WSM), Section 417-01 > Removal And Installation > Rear Lamp Assembly > Liftgate Mounted Rear Lamp Assemblies.
2. Determine which lamp cavity has been leaking by inspecting for water trace. (Figures 1-2)
Figure 1
Figure 2
3. Using butyl sealant tape, create a bead around the lamp cavity where the leak was present. (Figure 3)
Figure 3
4. Reinstall the liftgate mounted rear lamp assemblies.
1 Affected Product
Vehicle
1 Associated Document
Manufacturer Communications
21-2307
13 September 2021
- TAPE USE: Ideal for sealing uniquely shaped joints; Installs quickly, without gaps; Because the sealant is on a continuous roll, it's easy to install with no skips or runs in the seal
- EASY APPLICATION: Sticks and conforms to any smooth or irregular surface, including S-locks; Apply along unusual patterns
- USE WITH COMPATIBLE PRODUCTS: Provides an instant and permanent seal underneath the caulk-and-frames system to provide a double barrier of leak protection
- STRONG CONNECTION: High-tack adhesive with flexible elastomers provides a strong, flexible bond
- SIZE: 1/8" x 3/4" x 30' roll
- VERSATILE BUTYL PUTTY TAPE. Butyl tape RV is a versatile sealing solution commonly used in construction, automotive, and marine applications.
- RELIABLE RV WINDOW SEALANT. It is made of a synthetic EDPM rubber material resistant to water, chemicals, and extreme temperatures, making it a reliable choice for sealing joints and seams.
- COMPATIBLE WITH VARIOUS SURFACES. Butyl sealant tape is easy to use, as it can be applied by hand and adheres to various surfaces, including metal, wood, concrete, and plastic.
- WATERTIGHT PLUMBERS PUTTY TAPE. This type of RV sealant tape offers excellent adhesion and creates a watertight seal that helps prevent leaks and drafts.
- FOR EVERYDAY SOLUTIONS. Butyl seal tape is available in different thicknesses and widths to accommodate various sealing needs, making it a versatile and cost-effective solution for many applications.
- Butyl Sealing Rope Purpose: Butyl rubber 13Ft/4M suitable for sealing car doors, windshield, waterproof film, hood, lights, body plate joints and other parts of the shock seal
- Headlight Sealant Easy To Use: Butyl sealant tape is chemically resistant and very flexible, it can be flattened or stretched as needed for easy installation. Please clean the installation area in advance befor use
- Butyl Rubber Sealant: Rubber Sealant is a non-drying,non-hardening synthetic rubber based butyl rubber sealant.Butyl rubber is high viscosity, elasticity and tightness
- Multi-functional Butyl Sealing Rope: Headlight sealant retrofit anti-leakage, anti-corrosion, anti-deformation, anti-vibration, anti-aging, chemical corrosion resistance, very flexible, can be flattened or stretched, easy to install
- 🛺Widely Applications: Butyl sealant tape for all types of vehicles (cars, RVs, boats) and houses (windows, screen doors, skylights, vents), designed for waterproofing, shock absorption and noise isolation, perfect for taillights and headlights sealants
- APPLICATION: Widely used for window & door waterproof reinforcement, windshield, RV, retrofit, pipe, joint sealing, mobile home, glass, EPDM roof or galvanized metal roofing patching for indoor and outdoor.
- WORKING PATTERNS: Suitable to be use on glass, fiberglass, wood, coated or uncoated metals, plastic, rubber at tight corners, unusual curves, uneven and most jagged surfaces; reliably shut off wind, water, dust, oil, grease, vapor, moisture, corrosive chemical and other leakages; paintable feature is making your installation area a seamless, clean, dry and heavy duty water tight workspace.
- FEATURES: LLPT Butyl Tape is made of synthetic composited rubber for non-drying, non-hardening and extremely working temperature that provides easy installation, easy forming, quick molding, shock-absorbing, mess free, air tight sealing, waterproof, high viscosity and elasticity. Unlike most butyl seal tape, LLPT Butyl Tape is a premium grade with long life support, installs without gaps and can reliably shut off leakages.
- EASY TO USE: : LLPT Sealant Butyl Tape delivers easy molding and instant adhesion to the surface of object; simply clean the surface first for better bonding and release the butyl tape to areas you want to seal with proper press all around the tape; the ideal installation temperature is around 10 Celsius degree, to low will make the tape stiffer which might need a little bit longer time for molding.
- WATERPROOFING PERFORMANCE: With LLPT RV rubber butyl tape, you can confidently tackle leaks and protect your vehicle from water damage. Engineered for durability and resilience, this tape forms a robust seal that stands up to the demands of the road, shielding your RV from moisture infiltration and potential leaks. Whether you're repairing seams, securing windows, or reinforcing your roof, our tape offers easy application and lasting protection, ensuring your adventures remain comfortable and worry-free for miles to come.
- QUICK INSTALLATION: The Dicor Butyl Tape is designed for fast and easy application, making it perfect for quick repairs on your RV, trailer, or motorhome. Its user-friendly design ensures that even novice DIY enthusiasts can achieve professional results in no time.
- CONVENIENT CONTINUOUS ROLL: Featuring one continuous tape roll of 3/16" x 3/4" x 20', this Dicor Butyl Tape provides a seamless application process.
- VERSATILE APPLICATION: This butyl tape is highly flexible, enabling it to apply along unusual joints and patterns with ease. Whether sealing windows, doors, or vents, the Dicor Butyl Tape conforms to irregular surfaces, ensuring a tight seal.
- DURABLE AND RELIABLE: Built to withstand harsh conditions, offering long-lasting durability for all your RV repair needs. Its strong adhesive properties ensure a secure bond that won't deteriorate over time.
- EASY TO USE: Designed with the user in mind, the Butyl Tape is incredibly easy to handle and apply. Simply peel and stick the tape to the desired area, and its strong adhesive will do the rest, providing a hassle-free solution for all your repair needs.
Last update on 2026-06-18 / Affiliate links / Images from Amazon Product Advertising API
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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 2021 Mustang Mach-E: Install Sealer Following The Service Procedure Includes Time To Remove And Install Lamp Assemblies (Do Not Use With Any Other Labor Operations) 212307A 0.5 Hrs. Repair/Claim Coding Causal Part: 5840010 Condition Code: 07
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