Radio/Navigation Display Unit Control Module -J503-, REMOVING AND INSTALLING: Installing
WARNING: This page is about a different car, the 2018 Volkswagen Jetta, 2017 Volkswagen Jetta, 2016 Volkswagen Jetta, and 2015 Volkswagen Jetta. However, it is still accessible from the selected car via links, so may be relevant.
Install in the reverse order of removal while noting the following:
Never push on the display or the buttons on the Radio/Navigation Display Unit Control Module -J503- when inserting it, since the Radio/Navigation Display Unit Control Module -J503- may be damaged by doing this.
-- Check the coding and code again using the Vehicle Diagnostic Tester.