Where’s the job?

Scope of Works

• connect the vehicle to an OBD‑II / manufacturer diagnostic scanner and read fault codes

• perform battery and charging system tests including voltage and load checks

• test alternator and starter operation under load and inspect earthing points

• inspect wiring, connectors and fuses for corrosion, damage or poor contacts

• check immobiliser/ECU communications and clear and re-test fault codes as required

• road test where safe to reproduce the fault and monitor live data

• isolate the battery and use appropriate PPE such as gloves and eye protection when working on electrics

Typical Cost

Time on Site

Most diagnostic inspections take 1–3 hours depending on fault complexity and access; simple code read and battery check 30–60 minutes, while intermittent wiring faults or repairs can take 3–6 hours or require return visits. Factors that extend time include inaccessible wiring, the need for manufacturer tools for modern ECUs, vehicle recovery and waiting for parts

Questions to Ask Your Tradie

• do you have OBD‑II and manufacturer diagnostic tools for my make and model

• what does the diagnostic fee include and will you charge extra for road tests or lift use

• will you isolate the battery and follow PPE and safe‑working procedures when testing electrics

• can you provide a written estimate before ordering parts or carrying out repairs

• how do you charge for intermittent faults that may need multiple visits

• what warranty do you offer on diagnostic work and replaced electrical parts

How to Avoid Surprises

• park the vehicle on level ground and provide keys, immobiliser codes and any fobs

• clear access to the engine bay, battery and footwells and remove loose items that hinder testing

• tell the technician about aftermarket alarms, immobilisers, trackers or recent electrical work

• arrange parking or permits for the technician and confirm where they can work safely

• be available by phone while testing in case the technician needs to start the engine or reproduce a fault