problem starting c280
 

I have a 2000 c280 I just bought from dealer without warranty. I put the key in and nothing. the lights go on and when I turn the key I get nothing. I try 4-5 times and it will start on one of the times. I try to move the gear shift or turn the key in different position and usually one of those things gets it started. any ideas on what the problem is? thankyou