Chrysler 300 Owner's Manual page 167

NOTE: Installing a vehicle front-end protector or an
aftermarket grille or modifying the grille is not recom-
mended. Doing so may block the sensor and inhibit ACC
operation.
ACC Unavailable Warning
If the system turns off, and the EVIC displays ACC
UNAVAILABLE, there may be a temporary malfunction
that limits ACC functionality. In this case, ACC will be
temporarily unavailable. If this occurs, try activating
ACC again later, following a key cycle. If the problem
persists, see your authorized dealer.
UNDERSTANDING THE FEATURES OF YOUR VEHICLE 167
Service ACC Warning
If the system turns off, and the EVIC displays "SERVICE
ACC," it indicates there is an internal system fault that
requires service from an authorized dealer.
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