Thinboyslim

Hi all, Hoping someone can help. I’ve just bought an A3 S line sport back 1.4 TFSI and I love it. The car has rear parking sensors but when I put the car in reverse nothing comes up on the MMI and I can’t find anything in the settings either. I’ve seen that someone with a VCDS might be able to code it for me but no idea where to start in looking. I’m in Bristol. any advice would be massively appreciated. cheers