Auto Electrics Mechanic | Hockley Birmingham
MB Autos
Trusted auto electrics from your local mechanic in Hockley, Birmingham. Batteries, alternators, starter motors and wiring faults, diagnosed properly, fixed correctly.
A car that won’t start, a battery that keeps going flat, or a warning light that won’t clear can all come down to the same thing, an electrical fault somewhere in the system. MB Autos is a trusted mechanic in Hockley, Birmingham for auto electrics, diagnosing the actual cause rather than guessing or replacing parts unnecessarily.
Electrical faults rarely stay isolated to one component, a weak battery can strain the alternator, a wiring fault can trigger sensors that have nothing to do with the actual problem, and symptoms often point in a different direction to the real cause. That’s why every job starts with proper testing rather than swapping parts on a guess. Getting it right saves you paying twice for the same fault.
Battery diagnosis
A car battery can fail for several reasons, age, a faulty cell, or a charging system that isn’t topping it up correctly. Proper battery diagnosis tests the battery itself alongside the charging system, so you’re not replacing a battery that was never actually the problem.
Battery replacement
When a battery is confirmed faulty, we replace it with the correct battery for your vehicle, since modern cars often require a specific type matched to their electrical systems, not just the nearest size that fits.
Starter motor
The starter motor turns the engine over when you turn the key or press start. A worn or failing starter can cause slow starting, a clicking noise, or no response at all and is often mistaken for a battery problem when it isn’t.
Alternator
The alternator charges the battery while the engine is running and powers the car’s electrics on the move. A failing alternator often shows up as a battery that won’t hold charge, dimming lights while driving or a warning light on the dashboard.
Lighting systems
Lighting covers headlights, brake lights, indicators and interior lighting. Faults here are usually down to a blown bulb, a wiring issue or a failing switch and can affect both safety and MOT compliance if left unaddressed.
Throttle
The throttle controls how much air reaches the engine in response to the accelerator pedal. On modern vehicles this is managed electronically, and a fault here can cause hesitation, poor response or the car entering limp mode.
Wiring faults
Damaged or deteriorating wiring is a common cause of intermittent faults that are hard to pin down, flickering lights, warning lights that come and go, or electrics that work sometimes and not others. Tracing wiring faults properly takes time, but it’s the only reliable way to fix them for good.
Sensor faults
Sensors feed information to the ECU across almost every electrical system in the car. A failing sensor is a common cause of a warning light and is covered in more depth on our Car Diagnostics page.
Central locking and electric windows
Faulty switches, motors or wiring can stop central locking or electric windows working correctly. These faults are usually straightforward to trace once the affected circuit is identified.
Airbag warning light
An airbag warning light should never be ignored. It indicates a fault within the airbag system itself, and driving with it unresolved means the airbag may not deploy correctly in an accident.
Signs You Have an Electrical Fault
Dashboard warning light staying on
Difficulty starting the engine
Battery losing charge frequently
Flickering or dim headlights
FAQs
Why does my battery keep going flat?
This usually points to either the battery itself reaching the end of its life, or a charging fault meaning the alternator isn’t topping it up properly while you drive. We test both to find the actual cause.
Can you diagnose a warning light that other garages missed?
Yes, a fault that’s been missed elsewhere often needs a more thorough trace rather than just a repeat scan. We take the time to find what was overlooked the first time.
Do electrical faults cause MOT failures?
Yes, faulty lighting, unresolved warning lights and airbag faults are all common reasons for an MOT failure. Getting these checked beforehand can help avoid a failed test.
Is my alternator or battery the problem when the car won’t start?
Both can cause the same symptoms, so it’s not always obvious without testing. We check the battery and charging system together to identify which one is actually at fault.
What areas do you cover?
We’re based in Hockley, Birmingham B19 and cover Hockley, Jewellery Quarter, Aston, Nechells, Newtown, Great Barr, Perry Barr, Winson Green and wider Birmingham
MB AUTOS
REPAIR SHOP
HONEST REPAIRS. FAIR PRICING. EVERY TIME.
Trusted by drivers across Birmingham.
Hands on experience and knowledge.
Workmanship you can relay on.