Mercedes-Benz CLK320 ignition key won’t turn with old and new keys on Mercedes-Benz CLK320

Some Mercedes-Benz CLK320 owners report experiencing issues with their ignition key not turning, which can be attributed to several potential causes such as a binding steering column or lock, a faulty ignition switch, or problems with the key itself. In instances where the steering lock fails to unlock, owners may find that using a spare key or attempting a jump start can be helpful troubleshooting steps. It's important to note that the issue is unrelated to the remote key battery, as the ignition key can still start the engine without it. Additionally, if both old and new keys do not turn, owners are advised to check for signs of a binding steering column, verify the ignition switch functionality, and test the spare key to rule out key-specific issues. If the trunk does not open electronically, this may indicate a separate concern that requires attention. For keys that become stuck, using lubricant or a vibrating method with an electric toothbrush may assist in releasing the key.