Likely causes, most common first
Flat or failing battery
Rapid machine-gun clicking is the classic sign.
Failed starter solenoid
One solid click, lights stay bright.
Corroded earth strap or terminals
Free fix — clean and retorque before buying parts.
Checks to run first
- 1.Measure resting voltage: under 12.2V means charge or replace
- 2.Wiggle-test the terminals
- 3.Try a jump start to separate battery from starter
Frequently asked questions
- car clicks once but won't start?
- A single loud click with no crank points at the starter circuit; rapid clicking points at low battery voltage.
- Is it safe to drive with this?
- No. This symptom can leave you stranded or cause much more expensive damage — get it looked at before driving further.
- How much does it cost to fix?
- The most likely repair is battery replacement, which runs $120–$565 in the US including labour, or $90–$400 in parts if you fit it yourself.
Electrical & sensors parts
Batteries, alternators, starters, sensors and wiring
Find parts that fit
Year, make, model, trim — then only parts that fit your car.