When its cold in the mornings, I get the brake booster alarm when I touch the brake pedal, after a while it goes away.
Any ideas please?, I've read this, but I can't see the brake booster pipes in my car in that area.

No error messages and have garage has plugged in diags, no faults displayed

https://rennlist.com/forums/cayenne-...ing-light.html

Thanks
2009 GTS 4.8