The Mercedes SLK 320 was made from 2001 to 2004. It is part of the Mercedes SLK family which also includes the SLK 300 and the SLK 230. The "320" part of its name comes from its engine size (3.2L). The car's automatic gear lever handle, frequently called a shift knob, allows you to shift the transmission from "Park" to "Drive" and so on. If you are dissatisfied with the factory knob you can remove it to replace it with a new one.
Put the Mercedes SLK320 in "Park" and shut off the engine. Pry around the edges of the gear lever trim panel with the trim stick. Pull the gear lever trim panel up and over the shift knob to remove it. The panel has several wires attached to the underside. It's not necessary to remove them. Simply position the panel out of the way so you can access the shift knob.
Examine the bottom of the gear lever shaft. You'll see a small switch. This is the locking switch for the gear lever knob. Push it forward.
Grasp the auto shift knob and pull it upward to remove it from the shaft.