Are the sun blinds in the rear doors of the 2014 XJL Portfolio 3.0L non-electric and manually operated (pulled up and fitted on the hooks of the window), and electric sun blinds optional? The handbook that came with the car does not address any circumstances where these are manually operated. The "Owner's Handbook" states, "Rear electric door sun blinds: To raise the door sun blind: With the rear window fully closed, pull and release the rear window door switch. To lower the door sun blind: Push down and release the rear window door switch." However, in my car, this action/procedure does not engage the sun blinds in the rear doors. Also, there is no rear window sun blind, which is why I am wondering if "electric" rear door side window sun blinds are optional