1) Properly installed ACC bracket to the module. 2) Improperly installed bracket. Note the bracket separation.
This bulletin applies to 2019-2024 Alfa Romeo Giulia and Stelvio vehicles built on or before Feb. 2, 2024.
Customers may experience a MIL on. DTC C1417-78 (horizontal misalignment sensor...adjustment or alignment incorrect) and/or C1418-78 (vertical misalignment sensor....alignment or adjustment incorrect) may be stored. The FCW indicator may also be illuminated on the instrument cluster.
The cause: adaptive cruise control (ACC) hardware and/or software.
1. Raise and support the vehicle.
2. Remove the ACC module bezel/cover from the right front outer fascia grille. Inspect that the ACC module is properly secured to the ACC bracket at the lower right.
3. If the ACC module is properly installed to the bracket, perform the ACC active alignment procedure (radar calibration). If the bracket is not properly connected, secure the ACC module lower right pin onto the ACC bracket. Perform the ACC active alignment procedure.
Mike Mavrigian has written thousands of automotive technical magazine articles involving a variety ofspecialties, from engine building to wheel alignment, and has authored more than a dozen books that crisscross the automotive spectrum. Mike operates Birchwood Automotive, an Ohio shop that builds custom engines and performs vintage vehicle restorations. The shop also features a professional photo studio to document projects and to create images for articles and books.
