I have a chrysler crossfire srt 6 coupe and my locks stopped working the button on the dash does nothing remote will not lock or unlock just key in driver door help me out please what do I replace?

I believe that you need to replace the battery in your remote. Unless, of course, you got the second key with the car. Try that, if you have it. It should take care of the issue. You can bring the non-working piece to a Mercedes dealer or a locksmith (preferred) it will cost less money.

I tried that all the lights flash like it's locking but it won't unlock or lock not even with the lock button on the dash

its your door lock cylinder. part number 5135315AA. I have the same problem. dealership wants $580, the part is online for like $150 if you wanna do it yourself

Did you ever solve this? I'm having the same problem.

Is the door of the Crossfire fit the same? Convertible and hard top?

Is the door of the Crossfire fit the same? Convertible and hard top? Plus the front fenders

The locking module in the boot can get wet and stop working ,worth having a look at it and check operation.