hi, I have a 2008 mercedes c350 with about 94k on it and I am having this turn signal issue. so randomly on my way to the bank I use my right turn signal and it starts signaling twice as fast as it normally should.. so I thought to myself my bulb probably went out. took a trip to auto zone bought the bulb put it in and not working, so I turned off the car turned it back on light was on then I use my turn signal to make sure it works and then it starts hyper flashing again inside in my dash but no light on inside the headlight, mind you side mirror and tailight still work. so now I am forced not to use my right turn signal, left one is fine. also I took it to my mechanic & he took the socket since it is wireless, from the left headlight which is working put it in the right and that one would not work either. put it back in the left and voila working. so I have no idea what is going on. I'm sure it has something to do with the connectors in the actual headlight. some PLEASE HELP! not trying to go to the stealership because $200 just to diagnose is not justifiable.

 

Without spending my time searching\ reviewing the wiring diagram, has your mechanic tested the complete turn signal system. You know somebody has to spend time somewhere. that's what the 200 buck in diagnostics is for.

 

Have you tried to install the bulb the other way, +/- polarity it is? Try to cycle the ignition with key. Sounds like bulb is not getting any power.