Won't start? Warning lights? We've got this.
Electrical & Starting Issues
Reliable diagnosis and repair of battery, charging, and electrical faults — so a slow crank or dead start doesn't catch you out again.
- Battery and charging tests
- Alternators & starter motors
- Electrical fault tracing
What we can help with
Power when you need it.
Battery Health
Cranking amps, voltage and charging checks that tell you if the battery is truly failing.
No-Start Diagnosis
Clicking, dead silence or slow crank — traced to battery, starter, immobiliser or wiring.
Charging Faults
Alternator, belt and regulation issues that leave you stranded after a short drive.
Wiring & Fuses
Earths, blown fuses and intermittent circuits fixed without random part swapping.
What we do
A flat battery is rarely just about the battery.
A slow crank or dead start can point to the battery, the alternator, the starter motor, or a parasitic drain quietly draining power overnight. Replacing the battery without testing the charging system just means you'll be back here in six months.
We test the whole electrical system together — battery, alternator output, and starter draw — so you fix the actual cause, not just the symptom.
Proper Equipment
Workshop tools and testing kit suited to the job — not a guess and a parts catalogue.
Expert Technicians
Experienced hands that explain the fault clearly and only recommend what you actually need.
Save Time & Money
Fix the real issue first time so you don’t pay twice for the same problem.
Honest & Transparent
Clear priorities, written quotes, and no pressure to approve work that can wait.
Common Electrical & Starting Faults
Electrical and starting faults are among the most frustrating problems a driver can face, because the symptoms often seem random and multiple components can produce the same signs. Here are the most common issues we diagnose and repair.
Why Electrical Faults Get Misdiagnosed
Electrical problems are the faults most likely to result in unnecessary part replacements. A driver reports a flat battery, and the first garage fits a new battery. It goes flat again, so the next garage fits an alternator. It still drains — because the actual fault was a corroded earth strap or a parasitic draw from a faulty module.
The reason this happens is that most garages test the obvious components and stop. If the battery voltage looks low, they replace the battery. If it still fails, they move to the alternator. This approach replaces parts in hope rather than tracing the root cause.
Electrical diagnosis from £45
Diagnostic fee credited if you go ahead with the repair
Trusted by drivers in Coventry
5.0 ★ from 105+ reviews
“Professional & great service. Would highly recommend”
Jane Wilkinson
“Fantastic service. Very pleased with the outcome. Thank you.”
Simon Kinser
“Friendly and Honest Garage!”
Stefan
A real local workshop
Visit our garage at CV7 7SL
The Motor Medics is a family-run garage at Unit 1, Home Farm, Meriden Road, Coventry. Your vehicle is inspected at the workshop, the quote is agreed before repairs begin, and local collection can be discussed when practical.
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Frequently asked questions
Not always. A slow or clicking crank is often the battery, but a charging fault or failing starter motor can look identical. We test all three before replacing anything.