How do you change an injector on Mercedes c220 cdi?

To change an injector on a Mercedes C220 CDI, first, disconnect the negative battery terminal for safety. Remove the engine cover and the fuel lines connected to the injector. Then, unbolt the injector using the appropriate socket and carefully pull it out; make sure to clean the area to prevent debris from entering the engine. Install the new injector, ensuring all seals are in place, reattach the fuel lines, and finally, reconnect the battery.