Battery
A dead battery is the most common reason a car won't start — and most battery jobs are easier than they look with the right order of operations.
How to Jump Start a Car
A dead battery strands more drivers than any other fault, but a jump start takes ten minutes with a set of cables and a second vehicle — or a portable jump starter.
11 steps · 15 minHow to Replace a Car Battery
Batteries last 3–5 years, and swapping one is a 15–25 minute job with basic tools.
10 steps · 20 minHow to Clean Battery Corrosion
That white, green, or bluish crust on your battery terminals is corrosion — dried acid salts — and enough of it can cause slow cranking, charging problems, and no-starts.
7 steps · 20 minBattery Warning Light
The charging system has failed — the car is running off the battery alone and will die soon. Why it usually means the alternator, not the battery, and what to do next.
Decode the light