You turn the key or press the button and get a click, a weak groan, or nothing at all. It's one of the most common ways a day goes sideways, and the good news is that it's usually fixable where the car sits. Here's what to do, in order.
1. Stop cranking
It's tempting to keep trying. Don't. Every attempt drains what little charge is left, and a starter that's cranked over and over on low voltage can overheat. Two or three tries is plenty.
2. Turn everything off
Headlights, interior lights, the radio, the climate fan, anything plugged into a charging port. If the battery is just run down, you want every bit of charge available for the next start, and if someone is coming to help, it makes their job easier.
3. Listen to what the car did
The sound tells you a lot:
- Rapid clicking usually means the battery has some charge, but not enough to turn the starter.
- A slow, labored crank points to a weak battery or corroded terminals, especially on a cold morning.
- A single click with bright dash lights leans toward the starter rather than the battery.
- Total silence and a dark dash usually means a dead battery or a loose main cable.
- A normal crank that won't catch isn't a battery problem at all. The battery is doing its job.
4. Look, but don't touch anything strange
Pop the hood if it's safe. White or blue-green crust on the terminals is corrosion and can block current on its own. A battery that's swollen, cracked, leaking or smells like rotten eggs should not be jump-started or charged. Leave it alone and get it replaced.
5. Decide: jump, charge or replace
If the battery is fairly young and you know why it died, like lights left on overnight, a jump start will probably get you going. Drive at least half an hour afterward so the alternator can put charge back.
If the battery is three or more years old, has been slow to crank for a while, or has needed jumps before, a jump only buys you time. That's when a test and a replacement make sense.
If the car started fine after a jump but died again while you were driving, suspect the alternator. A new battery won't fix that, and it's worth getting the charging system tested before buying anything.
6. If you're on the road, get safe first
Get as far off the road as you can and turn on your hazards if they work. On a busy highway, wait away from the car on the side away from traffic, behind a barrier if there is one. If the car is somewhere dangerous, call for emergency help before anything else.
The easiest fix
You don't have to get the car to a store. A mobile battery tech can come to wherever it died, test the battery, alternator and starter, and either jump it, charge it or install a new battery on the spot. The old battery leaves with them for recycling.
Find your city on the locations page and call the local number. Have your year, make and model ready, and the exact spot where the car is parked.