S2108000280

Case Number: S2108000280
Release Date: November 2021
Symptom/Vehicle Issue: FCW Light Is On. DTC Revealed Misaligned DASM.
Alignment Pins Not Properly Seated
Discussion: Customers will experience the FCW message appearing on vehicle
cluster. Scan tool will reveal DTC C1417-78 (horizontal misalignment) or C1418-78
(vertical misalignment). Service library directs the dealership to perform the ACC
calibration procedure. If faults after calibration are still present or the vehicle comes
back with the same concern, inspect the front radar mounting pins to ensure pins are
fully seated, especially the bottom right pin that is adjusted for vertical alignment (See
figure 1). Pins must be properly seated for calibration to store after calibration
procedure.
Figure 1.
a) Not OK - unseated vertical alignment pin b) OK - seated vertical alignment pin.
This document does not authorize warranty repairs. This communication documents a record of past experiences. STAR Online
does not provide any conclusions about what is wrong with the vehicle. Rather, it captures all previous cases known that appear
to be similar or related to the vehicle symptom / condition. You are the expert, and you are responsible for deciding on the
appropriate course of action.
Contact STAR Center, or your Technical Assistance Center Via TechCONNECT or eCONTACT ticket if no
solution is found
FCA US LLC
Version 4.3 10/28/2020
If pins are seated correctly and calibration is still unsuccessful after multiple attempts,
remove radar from the vehicle, and inspect threads on the alignment pins. If pins have
reached the ends of threads, reset to mid thread position (see figures 2 and 3). Once
the threads are reset, re-install the radar and perform calibration.
Figure 2
a) Not OK - vertical alignment pin has reached end of threads.
b) OK - threads reset to middle position on vertical alignment pin before
recalibration.
This document does not authorize warranty repairs. This communication documents a record of past experiences. STAR Online
does not provide any conclusions about what is wrong with the vehicle. Rather, it captures all previous cases known that appear
to be similar or related to the vehicle symptom / condition. You are the expert, and you are responsible for deciding on the
appropriate course of action.
Contact STAR Center, or your Technical Assistance Center Via TechCONNECT or eCONTACT ticket if no
solution is found
FCA US LLC
Version 4.3 10/28/2020
Figure 3:
a) Not OK - horizontal alignment pin has reached end of threads.
b) OK - threads reset to middle position on horizontal alignment pin before
recalibration.
This document does not authorize warranty repairs. This communication documents a record of past experiences. STAR Online
does not provide any conclusions about what is wrong with the vehicle. Rather, it captures all previous cases known that appear
to be similar or related to the vehicle symptom / condition. You are the expert, and you are responsible for deciding on the
appropriate course of action.
Contact STAR Center, or your Technical Assistance Center Via TechCONNECT or eCONTACT ticket if no
solution is found
FCA US LLC
Version 4.3 10/28/2020