— I received a ‘service hybrid system’ light while driving (it only appeared for a split second and went away) and I took it to the dealership for troubleshooting. The dealership found a stored code of B273C-00. They contacted their Jeep engineers who have not been forthcoming as to what the issue is, but said the vehicle is not safe to drive, so I am not allowed to have the vehicle back (the same dealership has a 2nd Grand Cherokee 4xe with the same issue). Both vehicles are currently at the dealership and should be available for inspection. From my online research it seems to be tied to the vehicle’s crash sensor and high voltage cable harness. There are also numerous other owners in online forums discussing the same issue with their Jeeps (Grand Cherokees and Wranglers). -As Jeep engineers are not allowing myself or others to drive their vehicle with this code, they obviously consider it a safety issue. The scary thing to me is, that had I not happen to see that quick flash of the ‘service hybrid light’ I would be driving this unsafe vehicle without knowing it, as it did not turn on the check engine light, so I had no idea there was a stored code until the dealer checked it out. That means there are probably thousands of folks driving around at risk without even know there is a safety issue. -This issue has apparently been going on for months, as the other Jeep at my dealership has there for months now.