Car will not start: battery, starter, or alternator
Three different parts produce the same dead car, which is how people end up buying the wrong one. Start with the sound it makes when you turn the key.
Diagnostic price. The repair is quoted in writing once we know which part actually failed.
What the car is telling you
| What you hear | Most likely cause | Where to read more |
|---|---|---|
| Nothing at all, no lights, no click | Flat battery or a bad connection | Battery |
| Rapid clicking, lights dim as you turn the key | Battery cannot deliver cranking current | Battery |
| One loud click, dash lights stay bright | Starter motor | Starter |
| Engine cranks normally but will not catch | Fuel, spark, or immobiliser | Diagnostics |
| Died while driving, battery light was on | Alternator | Alternator |
| Started off a jump, then died again | Alternator | Alternator |
| Starts fine some days, dead on others | Worn starter or loose terminals | Starter |
This narrows it down. It does not replace a test, and the overlap between these is exactly why we measure before quoting a part.
Why a jump start is a diagnostic, not a repair
A jump tells you something useful for free: if the car starts and keeps running, the starter is fine and the problem is either the battery or the charging system. If it starts and dies again within a few miles, the alternator is not keeping up. If it does not turn over at all even with a good jump, you are looking at the starter or the cabling to it.
What a jump does not do is fix anything. The battery went flat for a reason, and that reason is either age, a charging fault, or something draining current while the car is parked. Jumping the car every morning is its own kind of misery, and it is usually a few weeks of denial before the real repair happens anyway.
Two things worth checking before you call anyone
Neither of these needs tools, and between them they account for a real share of the no-starts we get called to.
First, the battery terminals. Open the hood and look at the two posts where the cables clamp on. If you see white or blue-green crust, or if you can twist a clamp by hand, that is very likely your problem, and it is a cleaning-and-tightening job rather than a parts job. A connection that looks fine can still be bad, but one that is visibly corroded or loose almost never is.
Second, the gear selector. On an automatic, try starting in Neutral rather than Park. Cars will not crank unless the transmission range sensor tells them they are in a safe gear, and when that sensor drifts out of adjustment the car will refuse in Park and start perfectly in Neutral. On a manual, press the clutch all the way to the floor, since the clutch switch has to close before the starter gets power.
If either of those changes the outcome, tell us when you call. It narrows the diagnosis considerably and it may save you a visit entirely.
What we test when we get there
We bring bi-directional, factory-level scan tools to the car and read every module, engine through airbags, along with stored codes, pending codes, and the freeze-frame snapshot the car saved when the fault triggered.
On a no-start specifically that means testing the battery under a real cranking load rather than at rest, measuring voltage arriving at the starter, checking charging output with the electrical load switched on, and looking for a parasitic draw if the battery keeps going flat overnight. We also physically check the terminals, main cables, and grounds, because corrosion produces symptoms identical to three different expensive parts.
You get a written finding and a price for the repair. If you go ahead with the work, you already have the quote in hand, so you are not paying for a second diagnosis.
What it costs to find out
Scans and diagnostics start at $95 and most are done within the hour, right at the car. Domestic, import, and European makes, anything OBDII-compliant, which means model year 1996 or newer.
That number is the whole point of this page. A diagnosis costs less than the wrong part does, and the wrong part is what you buy when you are guessing from a symptom that three components share.
Same day, and after hours
A car that will not start is rarely a problem that waits politely for business hours. We cover Flushing and Queens, the other four boroughs, and Long Island, and we can often come the same day.
Text us the car, the year, and what it does when you turn the key. That last detail is worth more than any other for narrowing this down before we arrive, and we typically reply in under five minutes.
Common questions
How do I tell the battery from the alternator without any tools?
Jump the car. If it starts and keeps running normally after you disconnect the cables, the battery is the weak link. If it starts and then dies again shortly after, the alternator is not charging. It is not a substitute for a test, but it separates the two most of the time.
The car is completely dead, not even a click. What is that?
Most often a fully flat battery or a disconnected or corroded terminal. It can also be a bad main ground. All three are quick to check and none of them require replacing a starter, which is why it is worth checking before buying parts.
Do you offer a jump start on its own?
We do, as part of roadside service. We will also test why it went flat while we are there, because a jump alone tends to buy you a day rather than a fix.
My car cranks strongly but will not fire. Is that any of these three?
No. Strong cranking means the battery and starter are doing their jobs. That points at fuel, spark, or a security system fault, which is diagnostic work rather than a parts swap.
Dead in a parking spot right now?
Text us the car, the year, and the symptom for a free quote. We typically reply in under five minutes and can often come the same day.