How to Test a Ml320 Window Switch

1. Pry the MI320 master window switch out of the center console using the trim tool. Disconnect the switch from the power window wiring harness.
2. Plug the replacement master window switch into the power window wiring harness manually.
3. Test the switch on each of the MI320's four windows, if the windows all respond to the new switch, the old switch is bad. If the windows do not respond, reinstall the original switch, as it was not the source of the window failure.