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Security & TechWhy Will Not My Car Start?
By Sun Garage, Owner, Sun Garage · 10 June 2026 · 6 min read
Three types of starting problems
When your car will not start, the issue falls into one of three categories: complete silence (battery or electrical), cranking but not firing (fuel or ignition), or sluggish cranking (battery health). Understanding which one you have helps narrow down the cause.
At Sun Garage in West Bromwich, we diagnose starting problems quickly and get you back on the road.
The car is completely silent — no lights, no clicks
If there is no sound at all when you turn the key, and the dashboard lights are off or very dim, you almost certainly have a flat or dead battery.
Flat battery — the most common cause
Car batteries lose charge gradually over time, especially if the car has sat unused, or if lights or accessories were left on. A battery that is more than 3-5 years old is also more likely to fail without warning.
Cold weather also drains batteries faster — that is why many cars will not start on frosty mornings.
Corroded battery terminals
Even if the battery is not completely flat, corroded terminals can prevent the electrical connection from working. This looks like white or blue powder around the battery posts.
We can clean the terminals and see if the car starts. If it does, you may just need a battery clean-up visit.
Faulty alternator
The alternator charges the battery while the engine is running. If it has failed, the battery will not charge and will eventually go flat — even after a jump start or charge, the car will fail to start again within a few hours or days.
The car cranks but does not fire — you hear the engine turning
If the starter is turning the engine over but it will not catch and start, you have fuel or ignition system issues — not an electrical problem.
No fuel getting through
A faulty fuel pump, blocked fuel filter, or empty tank will prevent fuel from reaching the injectors. The engine turns over but never catches.
Faulty spark plugs or coil pack
If the spark plugs are old or the ignition coil has failed, there will be no spark to ignite the fuel. The engine will crank but will not fire.
Immobiliser fault
Modern cars have immobiliser systems that prevent the engine from starting if the key is not recognised. A faulty immobiliser sensor or key fob can prevent starting even though everything else is working.
Sluggish cranking — slow to turn over
If the engine cranks but very slowly, or if you hear rapid clicking, the battery is weak but not completely dead. You might get the car to start after a few tries, or you might need a jump start or battery charge.
Quick checks you can do
Before you call us, try these simple checks:
- Dashboard lights — are they bright? Dim? Off?
- Starter motor — do you hear a click or a crank?
- Battery terminals — are they corroded or loose?
- Fuel gauge — is there fuel in the tank?
- Key fob — does it unlock the car, or are the batteries in the fob flat?
- Jump leads — do you have them? A jump start might get you going.
We diagnose and fix starting problems
If your car will not start, bring it to us or call for recovery. We will test the battery, alternator, starter, fuel pump, and ignition system to find out exactly what is causing the problem.
Call us on 0121 553 0296 if you are stuck. We can often get your car running again the same day.