Car won’t start, just clicking? What it means

When a car will not start, the sound it makes when you turn the key is the most useful clue you have. Listen before you try again, and note whether the dashboard lights come on. Here is what each sound usually points to.

Rapid clicking or chattering

A fast click-click-click almost always means the starter is not getting enough current. The starter solenoid pulls in, the voltage collapses, it drops out and tries again. The cause is usually a flat or weak battery, or a loose or corroded battery connection. You may notice the dashboard lights dim or flicker at the same time.

One loud click, then nothing

A single solid click with bright dashboard lights suggests the battery has power but the starter motor is not turning. Common causes are a worn or failed starter motor, a poor main cable or earth connection, or a starter solenoid fault. Repeated attempts rarely help and can drain the battery.

No click and no sound, but the dashboard lights up

If everything lights up but nothing happens when you turn the key, the starter is not being asked to work. Check the simple things first:

• Automatics must be in P or N. Try moving the selector and starting again.
• Manuals usually need the clutch pressed fully to the floor.
• A security or key light flashing on the dashboard can mean the immobiliser is blocking the start. See car key not working.

Beyond that, the fault may be a starter relay, a fuse, the ignition switch or the wiring to the starter.

Nothing at all, no lights

A completely dead car usually means a flat battery or a battery terminal that has come loose or corroded through. Look at the terminals. White or green build-up, or a clamp you can twist by hand, is a likely culprit.

It cranks normally but won’t fire

If the engine turns over at a normal speed but never starts, the starting system is doing its job. The problem lies with fuel, ignition, sensors or the immobiliser, and needs a diagnostic check rather than a new battery.

About jump-starting

A jump-start may get you going, but it does not tell you why the battery went flat. If the car needs a jump again within days, or the battery light comes on while driving, the charging system needs checking. Our guide to the battery light coming on while driving explains why.

Stuck in Kempton Park?

We come to the vehicle wherever it has stopped, at home, at work or in a parking lot, and test the battery, connections, starter and charging system so you know what has actually failed. Tell us which sound the car makes and whether the dashboard lights come on. See our starting and charging service.