Section 16 (Engine Starting System & Charging System): Battery: Charge: Notes
WARNING: This page is about a different car, the 2022 Subaru WRX. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
Do not bring an open flame close to the battery.
CAUTION:
- If the terminals are corroded, clean with a brush and common caustic soda solution.
- As batteries produce flammable gases while charging, be careful not to bring an open flame close to the batteries.
- Ventilate sufficiently when charging batteries.
- Observe instructions when handling the battery charger.
- Before charging the battery on the vehicle, disconnect the ground terminal from the battery sensor to prevent damage of generator diodes or other electrical units.