I think the bottom of the display is at 20% and the top at 80% so 1 bar shouldn't be out of the range... you should be OK. But lets have someone with more detailed tech knowledge back that up.
I haven't taken mine to the car wash yet... I've actually gone back to the bucket and sponge method!
I haven't taken mine to the car wash yet... I've actually gone back to the bucket and sponge method!