A single click, or nothing, when you turn the key, with bright lights and a good battery, often points to the starter or its connections.
The car drives normally once started; the risk is not restarting. Avoid switching off in remote places.
$300-$700 for a starter (parts and labour), $20-$50 for cables and connections.
General US estimates, not quotes. Prices vary by region, vehicle and shop.
These signs indicate you might be experiencing this issue
Most likely reasons for this problem, sorted by probability
Step-by-step instructions to diagnose and fix the problem
Turn on the headlights: bright lights with a single click point to the starter, dim lights to the battery
With the engine off, check that both battery terminals are clean and tight
Try a jump start; if it still only clicks, the starter or its wiring is the likely cause
Have the starter tested at a parts store or shop; do not work near the engine while someone cranks it
Find a repair shop near you, or describe your exact symptoms to the AI mechanic
Do not wait if any of these apply
Simple habits that stop this problem coming back
A firm tap on a stuck starter sometimes works once. It is a temporary trick and a sign the starter is failing.
A weak battery dims the lights and gives rapid clicking. A bad starter gives a single click with bright lights.
AI-generated and informational only. This is not a diagnosis of your specific vehicle and does not replace inspection by a qualified technician.