Water leaks — trunk and rear door

Tags: #water-ingress · #trunk · #molding

Water in the trunk lid through the clip holes: after repainting the trunk lid, one owner found water entering specifically through the holes where the chrome-trim retaining clips are inserted — a known issue on the X80. Pushsalo (rust-proofing wax) in hidden cavities helps as general protection ¹².

Rear door/trunk water pooling under the spare tire (2): water pools under the spare tire (10–20+ mL) even without opening the rear door, in heavy rain. Root causes include: a poor rear door/trunk seal, an incorrectly-seated door card trim, or possible leakage around the rear window molding / an incompletely sealed window. Diagnosis/fix: remove the door card, check the door seals for proper fit, check window-to-body panel gaps, and apply sealant where gaps are found. Test by pouring water with the door closed and the interior stripped ³⁴⁵⁶⁷. ⚠️ Conflict: disagreement on the leak source — some owners report water entering only when the door is opened, others report leakage without opening the door at all (background infiltration through seals).

Water under the spare tire — broader diagnosis and repair cost: water accumulating under the spare-tire location can have multiple sources: a degraded door/boot seal allowing ingress when the door opens, failed clips/seals on the door molding (especially on restyle models), or leaking rear-light seals. Diagnostic method: spray water on the sealed car while watching from inside. Common fixes include re-sealing with silicone, replacing window-molding clips with better seals, and checking rear-light gaskets. Repair cost at a Moscow shop (AutoGermes): ~18,600 RUB for diagnosis plus full repair (RU market, November 2025) ^{8910111213141516171819202122232425}.

Trunk and baggage-area water ingress — comprehensive diagnosis: common ingress sources in the trunk/baggage area: (1) loose or poorly-sealed rear window trim molding; (2) rear spoiler/trim clips where the original sealant has been removed; (3) door/frame gaps from sloppy reassembly. Puddles form in the spare-tire well and under door trim; water absorbs into the soundproofing material and slowly leaks internally. Fixes: reseal the molding clips, reapply gaskets, and check panel alignment. Rust can appear under the molding, but the body interior stays dry if properly sealed ^{2627282930313233343536}.

Water pooling in the spare-tire well — multiple candidate entry points (December 2025 report): water was entering the spare-tire well; one owner sealed the clip joints in the trunk lid with sealant, which helped but only partially — root cause remained unclear. Recommended diagnostic tests: (1) spray water from a hose and watch for entry points; (2) check the rear-door drain (visible on the garage floor); (3) inspect the rear-window latch seal; (4) check for entry between the rear side panels. A separate owner used wide vinyl tape as a temporary fix for gaps in the chrome trim — this sealed the symptom (reported dry for 2 months afterward) but not the confirmed root cause ^{37383940414243444546}.

Water in trunk side pockets and under the spare tire — 5th-door molding and ventilation: water accumulates in the side trunk pockets (карманы багажника) and under the spare-tire area after rain or washing (one report of ~5 liters). Primary cause: water enters under the rubber molding on the 5th door (trunk lid/liftgate). Fixes: (1) remove and re-seal the molding with silicone hermetic sealant; (2) improve ventilation by keeping the sunroof shutter cracked open; (3) remove the drain plugs from the underbody rails (корыта) to allow drainage and prevent pooling ^47484950.

Water leak from rear door/5th-door molding clips after reinstallation: if the rear-door (5th door) molding is removed and reinstalled — for example after accident repair — water can leak into the trunk because the clips lose their tight fit once disturbed. Solution: remove the molding, apply hermetic sealant around it, and reinstall to restore a tight seal; consulting an experienced service is recommended for this repair ⁵¹⁵²⁵³.

Water pooling in the rear cargo area under door seals: water accumulates in the rear cargo area, under the door seals and in the cup-holder recesses, during rain. Causes: poor condition of the rear door seal, and roof water drainage entering the interior. Fixes: (1) inspect and clean the rear door seal — soak it in kerosene if it has hardened, to restore elasticity; (2) drill drainage holes in the cargo floor pan with an angled outlet pipe; (3) maintain the roof drainage properly. Monitor nearby electrical boxes for corrosion as a consequence ^54555657.

Trunk water leak from the rear-quarter-glass seal: water entering the trunk from the upper rear corner area (near the rear-quarter window) has been traced to a failed seal between the rear-quarter glass panel and its molding. Fix: apply black sealant/silicone caulk along the gap between the glass and the mounting frame. Some owners additionally apply weatherstripping tape (sourced from AliExpress) for extra protection ⁵⁸⁵⁹.

See also: Water leaks — fender and cabin ingress; Water leaks — door seals and body sealing; Water leaks — sunroof and roof drains.

Media

Video frame showing water drainage issue in the rear door/trunk area

Related pages

• Water leaks — door seals and body sealing
• Trunk chrome trim — clips and water sealing
• Trunk lock water ingress and repair
• Water leaks — sunroof and roof drains
• Water leaks — footwell diagnosis and A/C drain

Sources

This page is compiled from 59 community messages. Every fact carries a numbered reference to its original author and message.

Last updated: 2026-10-29