Your car won’t start: roadside assistance or a tow?

Listen to what happens when you turn the key. Silence or a rapid clicking usually means a battery problem, which roadside help can often fix on the spot. Cranking normally but never firing means fuel, spark or something else, and that generally needs a tow. The distinction is worth ten seconds of attention because it is the difference between driving away and waiting for a truck.

Work through the symptoms below and find yours.

Nothing at all — no sound, no lights

Dead silence with a completely dark dash points at a battery with nothing left in it, a badly corroded or loose terminal, or a failed connection.

Usually roadside. A jump start will normally get it running. Before you call, check that the headlights and dome light do nothing either — if they work normally, it is less likely to be the battery.

Also check the gear selector. An automatic will not start unless it is properly in park or neutral, and a selector resting slightly out of position is a surprisingly common cause of nothing happening at all.

Rapid clicking

That machine-gun clicking is the starter solenoid trying to engage and losing voltage each time it does. It is close to a diagnosis in itself.

Usually roadside. Classic weak battery. A jump start normally sorts it.

One loud click, then nothing

A single solid clunk with lights that stay bright is a different signal — the battery has power but the starter is not turning. That points more toward the starter motor or its solenoid.

Probably a tow. A jump start may do nothing, though it is worth trying because a weak battery can occasionally produce this too. If a jump does not shift it, the vehicle needs a shop.

Slow, labored cranking

The engine turns over, but sluggishly — the sound people describe as the car sounding tired. That is a battery without enough current, or a starter drawing too much.

Usually roadside. A jump start will typically get it going. What matters is what you do next, which is the section on false fixes below.

Cranks normally but never catches

The starter is doing its job at full speed, the engine spins, and it simply never fires. Electrically the vehicle is fine; something else in the chain is missing.

Fuel, spark, compression, or a sensor the engine will not run without. Occasionally something simple — an empty tank, or an immobiliser not recognizing the key.

Usually a tow. No amount of jump starting helps, because the battery is not the problem. Two things worth checking first: the fuel gauge, honestly, and whether you are using your normal key. If the tank really is empty, fuel delivery solves it where you sit.

It started, ran, then died

Particularly if it died while you were driving, and especially if the battery or charging warning light came on first. That pattern often means the alternator stopped charging and the vehicle ran until the battery was flat.

Usually a tow. A jump start may get it running again, but with no alternator it will die again within a few miles — possibly somewhere much worse than where you are now. This is the case where taking the tow is the cheaper decision.

Dash lights up, nothing when you turn the key

Full dash, no crank at all. Worth checking the mundane causes before assuming the worst: the vehicle must be in park or neutral, and a manual usually requires the clutch fully depressed. A security or immobiliser light flashing on the dash suggests the vehicle is not recognizing the key — try the spare if you have one.

Depends. If a spare key or reseating the gear selector solves it, you are driving away. If not, it is a tow.

Anything you can smell or see

Stop. Do not try to start it, do not accept a jump.

• Gasoline smell
• Burning, or hot electrical smell
• Smoke or steam of any kind
• Visible fluid pooling under the vehicle

Tow, and get out of the vehicle. Move well away and call. If there is any sign of fire, call 911 first.

When a jump start is a false fix

This is the part worth knowing even if your problem turns out to be simple.

A jump start puts current in from outside. It does not tell you whether the battery can hold a charge, or whether the alternator is refilling it as you drive. If either of those has failed, you will be standing in the same position later — in a parking lot, or on the shoulder of the Creek Turnpike at nine at night.

Two signs that a jump is masking something bigger:

• The battery warning light stays on after it starts. That is the charging system telling you it is not charging. Drive straight to a shop, or take the tow.
• It has needed a jump before this week. A battery that keeps going flat is either failing or being drained by something.

A good operator will tell you which of these they think it is. When we jump a vehicle, we will give you an honest read on whether it is the battery or the alternator — including when that means you should not simply drive off.

The other roadside cases

Not every no-start is an engine problem:

• Locked out with the keys visible on the seat — a lockout, opened without damaging the door, glass or trim.
• Flat tire — if there is a usable spare it goes on and you drive to a tire shop. If there is not, it becomes a tow.
• Out of fuel — enough delivered to reach the nearest station, gas or diesel.

All of these are on our roadside assistance page.

What to say when you call

Describe the sound, not your diagnosis. “It clicks fast and the dash dims” tells us more than “I need a jump.” Add whether the lights work, whether the warning light was on before it died, and whether it has done this before.

From that, we can usually tell you whether a truck with a tow or a truck with jumper cables is what you need. Sometimes the answer is that you do not need us at all — that is a fine outcome. What affects the price of a tow explains the cost difference between the two.