Recently two researchers working with a Wired Magazine reporter have demonstrated a serious vulnerability in UConnect, the software that powers the onboard entertainment systems of all Chrysler group cars manufactured after 2013: -remotely-kill-jeep-highway/
This is assuming that you're carrying out an untargeted attack (i.e. you don't care which car you compromise) as opposed to a targeted attack (i.e. you want to compromise a specific jeep) which might require additional information.
download uconnect jeep
According to Rory, Chrysler did apparently implement filters to prevent this kind of scanning. That doesn't matter if you already know where the IP addresses are. What matters is if they stopped the exploit that allowed remote control of the jeeps.
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