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Mercedes-Benz/Mercedes-Benz GLC Coupe/常见问题

2026-07-22 · 5 min read

Mercedes-Benz GLC Coupe Common Problems Malaysia

Common issues for Mercedes-Benz GLC Coupe owners in Malaysia — engine, transmission, cooling and electrical. Diagnosis guide.

Shared M274 Issues with GLC X253

Timing chain stretch: cold-start rattle — kit replacement
9G-Tronic judder on slow creep — ATF degradation; change at 20,000 km
Oil cooler adapter seal leak — oil drips onto transmission bell housing

Coupe-Specific Issues

Panoramic roof seal leak — wider glass panel causes water ingress into headliner
Limited boot opening — awkward spare tyre access; be aware of run-flat option

More Mercedes-Benz GLC Coupe guides

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