Jeep Wrangler 2020 Owner's Manual page 388

386 STARTING AND OPERATING
"Service ACC/FCW" Warning
If the system turns off, and the instrument cluster displays
"ACC/FCW Unavailable Service Required" or "Cruise/
FCW Unavailable Service Required", there may be an
internal system fault or a temporary malfunction that limits
ACC functionality. Although the vehicle is still drivable
under normal conditions, ACC will be temporarily unavail-
able. If this occurs, try activating ACC again later, following
an ignition cycle. If the problem persists, see an authorized
dealer.
Precautions While Driving With ACC
In certain driving situations, ACC may have detection issues.
In these cases, ACC may brake late or unexpectedly. The
driver needs to stay alert and may need to intervene.
NOTE:
• Do not put stickers or easy passes over the camera/radar
field of view.
• Cracks in the windshield may affect the performance of
ACC, depending on the size and location of the crack.
Towing A Trailer
Towing a trailer is not advised when using ACC.
Offset Driving
ACC may not detect a vehicle in the same lane that is offset
from your direct line of travel, or a vehicle merging in from
a side lane. There may not be sufficient distance to the
vehicle ahead. The offset vehicle may move in and out of the
line of travel, which can cause your vehicle to brake or accel-
erate unexpectedly.
Offset Driving Condition Example