Re: Collision warning option
My 2014 Jeep Grand Cherokee Overland, built in March 2013, has the first-generation Forward Collision Warning, which very rarely has alerted me to an impending collision and which, on the hand, has issued more false alerts than true alerts.
The only real-world test for FCW is to crash your Jeep or, better yet, aim your Jeep at a large object and, if all goes well, brake and stop the Jeep a few feet short of the object.
Clearly the first-generation Bosch FCW radar system used in the Jeep Grand Cherokee is unreliable and untrustworthy. By the way, mine does have the latest firmware upgrades.
As with all Jeeps, caveat emptor. Buyer beware!
2014 Jeep Grand Cherokee Overland 3.6L 4x4; Quadra-Lift II; Off-Road Adventure II; Advanced Technology Group; Vesuvio Indigo Blue interior; white exterior; engine block heater; CD Player. Built April 2013. As of June 24, 2015, the Jeep has been driven about 43,000 miles (70 000 km). The transmission failed at 41,000 miles (65 000 km). A Jeep dealer under warranty replaced the transmission's valve body assembly. At 43,000 miles (70 000 km) the valve body assembly failed for a second time.