Symptoms
- Dash lights, radio, and accessories all work normally
- Turning the key to 'start' produces absolutely nothing
- No click, no crank, no noise at all
- May have worked fine the last time it was driven
Likely causes
- CommonFaulty ignition switch not sending the start signalThe switch can fail electrically even though the key still turns fine mechanically.
- CommonFailed starter relayThis relay passes the start signal to the starter and is a common failure point.
- PossibleBlown starter circuit fuseA specific fuse for the starter circuit can blow without affecting other systems.
- PossibleShifter not registering Park/Neutral (safety switch)Some cars will act completely dead-silent on start if this switch fails or is misaligned.
- Less commonBroken or disconnected wire between switch and starterWear, rodent damage, or a loose connector can fully interrupt the signal.
What to do
- Confirm the shifter is fully in Park (automatic) and try Neutral as well, since a safety switch fault can cause total silence.
- Check the fuse box for a blown fuse labeled for the starter or ignition circuit.
- Locate the starter relay (often shown in the fuse box diagram) and try swapping it with an identical relay if available.
- Try turning the key while wiggling the steering wheel slightly, in case a column lock is involved.
- If you're comfortable with basic electrical testing, a remote starter switch at the starter itself can confirm if the starter is good and the problem is upstream.
- Have the ignition switch tested, since it can fail electrically while still turning smoothly.
- Check for obvious chewed or damaged wiring near the steering column or starter if the car has had rodent issues.
- Have a mechanic trace the start circuit with a wiring diagram if swapping the relay and checking fuses doesn't help.
Tools and parts
- Fuse puller/tester
- Spare relay of the same type (if available)
Starter relaySearch: “starter relay for [year make model]”
Ignition switchSearch: “ignition switch for [year make model]”
When to call a pro
A shop with a wiring diagram can trace the start circuit efficiently if the relay and fuses check out; this saves time over guessing at parts.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.