How to Jump Start a Vehicle

Vehicle Jump-Starting procedures as listed below should be followed carefully:

  • Ensure that vehicle battery and battery for jump-starting have the same declared voltage (say 12V)
  • Turn off all electrical loads, check vehicles - no part should be touching each other and gear should be in neutral position
  • Vehicles should have the same terminal earthed, if not, refer to manufacturers' instructions. Make sure that cables are not frayed or damaged.

Carry out the following steps in sequence:

  • Connect the positive terminal of jump-starting battery to the positive terminal of the stalled car battery - on negative grounded system.
  • Connect one end of the other cable to the negative (-) terminal of the booster battery.
  • Connect the other cable away from the battery, to the engine block or car frame of the vehicle to be started.
  • Make sure cables are away from fan blades and other moving vehicle parts.
  • After starting, remove cables in reverse order, starting with one connected to engine block or car frame.
  • If vehicle does not start within 30 seconds, call an auto electrician.


Modern vehicles with electronic management systems should not be jump-started without "protected" jump starter leads. It is necessary to refer to the owner's handbook for jump-starting procedures for such vehicles.