12 V battery discharging
Severity 1/3 · AnnoyingThe small 12 V auxiliary battery can discharge, especially if the car is driven little; insufficient voltage prevents the hybrid system from starting ("Ready" mode) and can make it look like a transmission fault (Fiches-auto, CarVerif). Owners of 2019 to 2022 C-HRs report batteries found heavily discharged (Toyota Owners Club).
- Versions
- Hybride 122, Hybride 184
- Onset
- not documented
- Repair
- not documented