
Accurate car battery testing, replacement, and electrical fault diagnosis carried out by experienced mechanics in Wairau, Auckland, helping restore reliable starting and correct vehicle operation.
At Wairau Motors, we diagnose electrical issues properly, ensuring faults are identified and repaired without unnecessary part replacement.
Modern vehicles rely heavily on electrical systems to operate safely and efficiently. Starting issues, warning lights, and intermittent faults often require careful diagnosis rather than guesswork.
Our mechanics test batteries, charging systems, and electrical circuits methodically to identify the root cause of the problem. We then explain what’s required and carry out repairs using appropriate components and procedures.
Wairau Motors is a locally owned and operated workshop based in Wairau, Auckland, run by Dan and Paul. With over 50 years of combined hands-on mechanical experience, our team diagnoses and repairs electrical and battery-related issues on a wide range of European and Japanese vehicles.
From simple battery replacements to more complex electrical faults, our mechanics focus on accuracy and long-term reliability.
We test and confirm faults before replacing components.
Batteries are selected and installed correctly for your vehicle’s requirements.
You’ll understand what the issue is and how it’s being resolved.
We believe electrical issues should be diagnosed properly to avoid repeat problems.
Common signs include slow engine cranking, warning lights, electrical issues, or the vehicle failing to start. We can test the battery and charging system to confirm whether replacement is required.
Yes. Electrical issues can trigger dashboard warning lights or cause systems to behave unpredictably. Accurate diagnosis is essential to identify the cause and repair it correctly.
Yes. We replace batteries for vehicles with start-stop systems, ensuring the correct battery type is fitted and programmed where required.
Yes. While we’re based in Wairau, Auckland, many customers travel from Glenfield, Albany, Takapuna, Northcote, Birkenhead, Hillcrest, and Mairangi Bay for battery and electrical fault repairs due to our careful diagnostic approach.
Yes. Electrical issues affecting lighting, warning systems, or vehicle safety can contribute to WOF failures. We can diagnose and repair these issues to help your vehicle meet requirements.
Always. We identify the fault first, explain the issue clearly, and discuss repair options before carrying out any work.
Ready to book your vehicle in? Our team is here to help.
4/5 Parity Place, Glenfield, Wairau, Auckland