Butyl on roof around rear sunroof glass
BMW technical service bulletin B540519 for 2019 BMW X7.
- Bulletin number
- B540519
- Component
- Visibility: sun/moon roof assembly
- Summary
- BUTYL ON ROOF AROUND REAR SUNROOF GLASS. CAUSE Exposure to normal ambient heat can cause the factory-applied sunroof butyl to expand and leak out from around the rear sunroof glass.
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