My car won't start but the lights work. What's wrong?

Concerns & risks

You were trying to leave for work, but the engine just clicked when you turned the key, even though the dashboard lit up.

Getting stranded is no fun.

Causes & evidence

Clicking with working lights is often a weak battery or poor connection, though a starter problem is possible.

What to do

1. Check battery terminals for corrosion or looseness.
2. Try a jump start following your manual.
3. If it starts, have the battery and charging system tested.
4. If jumps don't help, it may be the starter.

Common mistakes: Common mistakes: cranking over and over, which can drain the battery further or overheat the starter. Check for lights or accessories left on overnight. Clean corrosion carefully with gloves and eye protection, since battery deposits are corrosive. Many batteries last several years, but heat and cold shorten life. If a jump works, drive for a while to recharge and get the battery and alternator tested, because a bad alternator will drain the new charge too.

Speed Man tip: Many auto parts stores test batteries.

Wrap-up: Clicking often = battery. Check terminals. Test after a jump.