TSB: REVISION NOTICE January 17, 2018 Rev1: G3886 The Repair Procedure section has been updated. Any previous printed versions of this bulletin should be discarded. Some 2016 - 2017 model year Mirai vehicles may exhibit a chirp noise coming from the rear of the vehicle during the following conditions:? Low/parking lot speeds ? Cruising speeds ? Varying angles of accelerator pedal application Chirp Noise Example This chirp noise may come from the hydrogen supply regulator. Follow the Repair Procedure in this bulletin to address this condition.
