If you want to disable this 'feature' just disconnect the plug from the solenoid valve with the green vacuum lines connected to it.
This will cause a fault code to register in the engine management ECU as it checks to see if the solenoid is connected, but it shouldn't have any other effects.
'08 Chrysler 300CRD (MB OM 642 engine)
'95 E220 estate
'89 230TE (R.I.P.)