No! When you wash your car you should remove the rack because:
1. The rack might snag on some of the machinery of the car wash and damage your car and the car wash.
2. Wand washing your car could blow dirt underneath the pads of your rack system, which will end up damaging the vehicle’s finish.
3. You want to take the rack off so that you can clean away any water stains or dirt that managed to sneak under your mounting pads. Also so you can check your contact points for wear.