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Mercedes-Benz S550 Key Won't Turn

Learn if it's a simple fix or time to seek out a trusted technician.

What are common reasons my Mercedes-Benz S550 key won't turn?

While there are a variety of reasons your Mercedes-Benz S550 key won't turn, the most common 3 are a binding steering column/lock, an ignition switch issue, or a problem with the ignition key.
35%
of the time it's
Binding Steering Column/Lock
27%
of the time it's
Ignition Switch
20%
of the time it's
Ignition Key

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Mercedes-Benz S550 Key Won't Turn Repair Symptoms

When the electrical portion of the ignition switch fails, the vehicle will permanently or intermittently lose power to certain systems and components, depending on which positio...Read More
When the ignition switch lock cylinder fails, the ignition switch may very well work, but it may be difficult to find out, as the lock cylinder can fail to release when the key ...Read More
A failing ignition cap on rotor will create misfires in the engine, and lead to hesitation, extreme power loss, engine stalling, poor fuel mileage, and illumination of the check...Read More