How do you replace ignition switch on ml320 Mercedes?

To replace the ignition switch on a Mercedes ML320, first disconnect the battery to ensure safety. Remove the lower steering column cover to access the ignition switch, then disconnect the wiring harness from the back of the switch. Unscrew and remove the old ignition switch, then install the new one by reversing the process. Reattach the steering column cover and reconnect the battery to complete the installation.