Monday, January 12, 2026

Model 3 Water leaks around trunk/hood

 Here is the list of 5 labels for Model 3 Water Leak issues, covering both trunk and hood (frunk) areas based on recent service bulletins and owner reports:

Trunk Lid Internal Ingress,

  • Cause: Incomplete factory sealant around the taillight housing or weld points on the upper trunk lid allows water to enter the hollow interior of the lid itself.

  • Solution: Tesla Service Bulletin SB-23-10-002 instructs technicians to remove the rear lights and apply a high-strength white sealant (Loctite 5510) to specific internal panels and pinholes.

Lower Trunk Tub Pooling,

  • Cause: A misaligned trunk hinge or a "Version 1" rubber gasket that lacks the necessary thickness causes water to bypass the seal and overflow into the sub-trunk storage area.

  • Solution: Replace the trunk weatherstripping with the redesigned "Version 2" thicker seal and adjust the rubber bumper stops to ensure the lid compresses the gasket tightly.

Frunk "Koi Pond" Effect,

  • Cause: The front hood latch is set too high from the factory, preventing the hood from creating a proper seal against the cowl gasket during heavy rain or car washes.

  • Solution: Adjusting the hood latch tension and the rubber stoppers to pull the hood down further. Many owners also install an aftermarket "extended cowl seal" to bridge the gap between the hood and the windshield.

Tailgate Harness Grommet Leak,

  • Cause: The rubber grommet protecting the wiring harness (involved in the 2022–2025 camera recalls) can become unseated, allowing water to drip directly onto the trunk amplifier or subwoofer.

  • Solution: Inspect the harness grommet for a secure fit. If water has already entered, the trunk liner must be removed to dry the area and treat any surface mold with a peroxide-based cleaner.

Cabin Intake Water Intrusion,

  • Cause: Water or debris enters the air intake duct located under the hood (frunk) area, which can lead to wet passenger floorboards and a "musty" HVAC smell.

  • Solution: Clear leaves from the intake area and use "Car Wash Mode" when cleaning the vehicle to close the internal intake louvers. Installing a mesh intake cover can prevent debris from clogging the drainage paths.


Labels List Only

Trunk Lid Internal Ingress,

Lower Trunk Tub Pooling,

Frunk "Koi Pond" Effect,

Tailgate Harness Grommet Leak,

Cabin Intake Water Intrusion,


Tesla Model 3 Trunk Design Flaw

This video demonstrates a Tesla mobile service technician upgrading a Model 3 with an improved trunk seal to prevent the common water overflow issues described.

Would you like me to find the specific "Car Wash Mode" instructions for the 2026 Model 3 software?

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