Fixing Your Car’s Alternator: Signs, Repair Costs and Options

Car Alternator

If your car is struggling to start or you notice flickering lights and battery warnings on your dashboard, you might be dealing with a failing alternator—a common issue for motorists across South Africa. The alternator plays a vital role, charging the battery and powering electrical systems. A malfunction can lead to breakdowns or damage to other components if not caught early.


What Does the Alternator Do?

The alternator converts engine power into electricity, charging your battery and keeping electrical features (like headlights and infotainment) running. According to Arrive Alive, a failing alternator is often the underlying cause of battery-related breakdowns, not just the battery itself.

Common causes of alternator issues:

  • Worn brushes or bearings
  • Faulty voltage regulator
  • Broken or loose alternator belt
  • Corroded wiring or terminals

Regular inspection can spot problems before they become serious.


Signs of a Bad Alternator

Spotting alternator trouble early saves time and money. Look out for:

Also monitor: temperature warning light inspection, hand/emergency brake issues, coolant leak, or contaminated clutch fluid.


What To Do Next

If you notice any of these symptoms:

  1. Don’t ignore warning signs.
  2. Minimise electrical use: Switch off non-essentials (radio, aircon).
  3. Inspect: Pop your bonnet and look for loose belts or obvious problems.
  4. Book expert help: Arrange a diagnostic car inspection or schedule a diagnostic inspection. Fixxr’s mobile mechanics come to you for safe, fast diagnostics.

A professional will also check the alternator belt and related cabling—see alternator belt replacement services if required.


Repair vs Replacement in South Africa

Not every alternator needs replacing. According to Laser Auto Electric, experienced auto electricians can often repair minor issues (worn brushes, faulty regulator) for less than full replacement.

  • Repair: Suitable for minor wear, working OEM units.
  • Replace: Necessary if your alternator has major internal failure or is outdated.

Always choose a Fixxr mobile mechanic or MIWA-accredited experts (MIWA criteria) for quality, safe repairs.


Typical Repair Costs (2024)

| Service Option | Estimate (R) |
|————————————————–|——————|
| Diagnostic inspection | R350 – R700 |
| Minor repair (brushes, bearings, regulator) | R900 – R2,000 |
| Alternator belt replacement | R600 – R1,200 |
| Replacement alternator (parts & labour) | R2,500 – R7,000+ |

Final price depends on your vehicle and needed repairs. Fixxr offers upfront quotes and a 6-month/10,000km warranty on alternator work.


How To Stay Safe

  • Don’t DIY alternator repairs. Modern car electrics are complex and risky.
  • Use accredited specialists (see MIWA criteria).
  • Get a printout of diagnostics and a full warranty.
  • Book mobile alternator repairs near me for quick, convenient service where you are.

Why Choose Fixxr?

Fixxr brings MIWA-standard, expert mechanics to your home, office, or roadside, covering all major SA cities. Our technicians carry diagnostic tools that meet industry standards (MIWA), ensuring reliable repairs and safety.

What you get:

  • Transparent, up-front pricing
  • 6-month/10,000km warranty on work
  • Fast, convenient service

Book today: Book a mobile alternator repair service | Diagnostic car inspection | Alternator belt replacement

Stay on the road and avoid costly breakdowns with professional alternator repairs from Fixxr.


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Picture of Curtis Young

Curtis Young

Curtis Young is the CEO and Head of Strategy and Product Development for Fixxr, where he manages the company’s fast-growing business, combining strategic thinking with crisp execution to deliver unique value-creating products – leading the team in conducting the analysis that informs the implementation of strategic initiatives while also being able to communicate with customers, mechanics and external partners. Curtis is responsible for creating an extensible platform that simplifies processes while making a delightful experience for customers, mechanic partners and suppliers. Curtis is an experienced and entrepreneurial leader with a solid strategic, operational and analytical background in building scalable businesses large and small.
Picture of Curtis Young

Curtis Young

Curtis Young is the CEO and Head of Strategy and Product Development for Fixxr, where he manages the company’s fast-growing business, combining strategic thinking with crisp execution to deliver unique value-creating products – leading the team in conducting the analysis that informs the implementation of strategic initiatives while also being able to communicate with customers, mechanics and external partners. Curtis is responsible for creating an extensible platform that simplifies processes while making a delightful experience for customers, mechanic partners and suppliers. Curtis is an experienced and entrepreneurial leader with a solid strategic, operational and analytical background in building scalable businesses large and small.

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