The integrated GPS antenna module for the Mercedes GLC X254 MBUX navigation system receives GPS, GLONASS and Galileo satellite signals. A failed antenna causes the navigation map to show no position or reduced accuracy. Plug-and-play replacement requiring no coding.

1. 1
2. Remove headlining centre section
3. 2
4. Locate antenna module on roof reinforcement
5. 3
6. Press SMB connector release and disconnect
7. 4
8. Remove adhesive pad
9. 5
10. Clean roof surface
11. 6
12. Stick new antenna module with supplied adhesive
13. 7
14. Connect SMB connector until it clicks
15. 8
16. Reinstall headlining
17. 9
18. Test navigation fix acquisition.