Rain Sense Shutters

[sifaan]

Hi all

 

I have a C5 (1st Gen) with Rain-Sense wipers and shutters.

Are the shutters only supposed to work with ignition on? Or is it a fault in my car?

 

Car is parked outside at work in the sun, and would love to keep the shutters down a bit (the levels offered by the 3rd button on the keyfob) to keep the car cool, but seems like the rain sense shutters only work with the ignition on (don't want to risk the car getting wet in case of a sudden drizzle)

 

Thanks

/Sifaan