passenger door not unlock, replace door lock?

[ohwhatalad]

hi all i got a new to me 2009 a5 and the passenger door does not unlock with the fob, it only unlocks from inside and works fine once car is unlocked from in and outside.

i was told by seller it needs new door lock module which he was quoted 120 for by audi, and 1 hours labour

I'm wondering if anyone has done this themselves, if it just a door card off job and bolt on / off, or something more, any help would be appreciated many thanks