Peter Higgo

All of this post so far refers to pre-2018 model A6... I have a 2019 with the 'full glass' wrap across MMI. The GPS on the nav failed. The GPS antenna is in the sharks fin on the roof. The module where the GPS antenna connects to is behind/above the glove box. Remove the glove box and look straight up - there is a silver control unit and you will see that one of the connectors is a blue fakra - this is the GPS antenna. 4 x bolts hold the unit in place. Drop the unit and plug a new antenna into the blue fakra port {obviously disconnect the existing antenna} and you should get GPS back. Stick the antenna on top of the LH centre vent facing upwards through the dash.. Done... No need to change the sharks fin.. :-)