High Usage Vehicles May Experience Ignition Lock and Tumbler Failures on Mercedes-Benz 300SL

On high usage vehicles, the ignition lock may become difficult to turn due to wear of the ignition lock and tumblers. Replacement of the ignition lock cylinder will generally be required to correct this concern.

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Average mileage: 104,000 (67,000–141,000)
4 model years affected: 1990, 1991, 1992, 1993
6 people reported this problem
2 people shared problem details
Key switch jams. Still not repaired
Very difficult to turn key. No lubrication helps. I will have to have the tumblers replaced soon.
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