Mercedes Benz 190e Ignition Switch Key

Steering Problem 1991 Mercedes Benz 190e 4 Cyl Two Wheel Drive Automatic I Own A 1991 Mercedes 190e 2.3 (4 Cylinders) Here In Canada....

Are My Keys To Worn To Start My Car All Of A Sudden The Ignition Wont Turn Over At All Its Like The Tummblers Are Stuck What Can I Do To Fix...

I Have A 1986 Mercedez Benz, 2.3 , 190e I Went To Started One Day And The Key Will Not Turn Anymore, I Tried It Alot Of Times And It Just...