The Key Won#039;t Turn in My Mercedes Ignition

1. Remove the key from the ignition.
2. Spray a small amount of WD-40 onto the key blade.
3. Insert the key into the ignition and jiggle. The WD-40 provides lubrication, making it easier to turn the key.
4. Visit your local Mercedes dealership to have a replacement key made. Keys may become worn over time, making it difficult to turn the ignition.