Two rather different cars, the Chrysler Pacifica minivan and Jeep 707-horsepower Grand Cherokee Trackhawk, have been recalled.

The Pacifica recall covers around 160,000 2017 models, where the engine software may lose the crankshaft position sensor signal and stall the engine. The fix is a software update, to be applied starting in March (FCA recall U01 / NHTSA recall 18V049000). The recall does not affect the hybrids; it does affect both stop/start and standard systems, in all cases built before June 30, 2018.

press-jeep trackhawk

This recall began with a customer complaint on October 23; the company was able to buy an affected minivan and test it on November 20, successfully inducing a stall on November 24 due to a “poor engine wiring harness splice.” They then studied the wiring, and why the computer wasn’t able to make up for a 150 ms gap in the signal.

The problem appears to be fairly widespread, with reports about 670 Pacificas; there has been one possibly related accident but no injuries.

The 2018 Trackhawk recall, as one might expect, affects fewer vehicles — 1,242 in the US — but could be more serious, with fuel line separation.  Only around 5% of Trackhawks are vulnerable; it affects vehicles made from production start through December 10, 2017, when the supplier added better end-of-line testing. This fault was due to supplied part faults. From December 13-15, the supplier and FCA analyzed two failed parts; the supplier found a misaligned sensor on the machine that assembled them. FCA is unaware of any related accidents or injuries at this point, but did receive two field reports.