WARNING 
Improper use of jumper cables when jump-starting a vehicle 
with a dead battery can cause the battery to explode, leading to 
serious personal injury. To help reduce the risk of battery ex-
plosion: 
  All work on the batteries or the electrical system in your ve-
hicle can cause serious acid burns, fires, or electrical shocks. 
Always read and heed the following WARNINGS and safety pre-
cautions before working on the batteries or the electrical sys-
tem ⇒  Vehicle battery. 
  Always wear proper eye protection. Never lean over the vehi-
cle battery. 
  Attach the jumper cables in the correct order: first the posi-
tive cable, then the negative cable. 
  Never connect the negative cable from the vehicle providing 
starting assistance to parts of the fuel system or to the brake 
hoses or brake lines. 
  Never allow the non-insulated parts of the battery clamps to 
touch. 
  Never allow the jumper cable attached to the positive battery 
terminal to contact metal parts of the vehicle. 
  Check the battery acid level indicator window on the vehicle 
battery. Use a flashlight, never a match, cigarette lighter, or 
other open flame. If you cannot see the color of the window 
clearly, or if it is light yellow or colorless, do not jump-start the 
vehicle. Get expert assistance. 
  Avoid electrostatic discharge in the vicinity of the vehicle 
battery. Sparks may cause the hydrogen gas escaping from the 
vehicle battery to ignite. 
  Never jump-start a vehicle with a battery that is damaged or 
frozen or that was frozen and has thawed. The battery can ex-
plode. Replace the battery instead. 
  Always follow the instructions of the jumper cable manufac-
turer. 
  Always make sure that the battery providing starting assis-
tance has the same voltage as the dead battery (12 V) and 
about the same capacity (see battery label).