Subaru WRX & WRX STI Manuals 2014 Impreza WRX & WRX STI Owner's Manual | Page 309

9-10 In case of emergency/Jump starting & How to jump start 1. Make sure the booster battery is 12 volts and the negative terminal is grounded. 2. If the booster battery is in another vehicle, do not let the two vehicles touch. 3. Turn off all unnecessary lights and accessories. 4. Connect the jumper cables exactly in the sequence illustrated.