Hybrid system check light
It's possible, these vehicles are known for having fuel pump issues (https://www.yourmechanic.com/services/fuel-pump-replacement). On Toyota and Lexus hybrids, a red triangle is the master warning light, which can indicate anything from a problem with the hybrid system to a burnt out...
Is it possible to hijack a radio station's frequency and transmit to someone's car radio on that frequency? ...
Is it possible to hijack a radio station's frequency and transmit to someone's car radio on that frequency?