Specifically, the probe is looking at improper application of the e-brake, according to a Reuters report. While the investigation of 8,000 new Infiniti crossovers is not a recall, it could eventually trigger one if the government agency doesn't like what it finds.
The probe was launched after a pair of owners reported to NHTSA that "the intelligent brake assist system inappropriately activated emergency braking autonomously bringing the vehicle to an immediate and complete stop." One can see the potential danger in a vehicle that stops unintentionally and without warning.
No word yet on what might have caused the issue, but we'll keep our eyes peeled for more information.