Diagnostics & Warning Lights
Scan-tool diagnostics to find the real cause behind a warning light or fault.
Quote before any work
Your approval before any extras
All makes & models
Petrol, diesel & hybrid
Honest, no-pressure advice
Only the work your car needs
Deal direct with the workshop
Not a service desk
Diagnostics & Warning Lights in Salisbury
Car diagnostics is the process of using scan tools and structured testing to read fault codes and trace a warning light or symptom back to its real cause. A light on the dash tells you something is wrong, but it rarely tells the whole story — diagnostics is how we find out what's actually going on.
At our Salisbury workshop we connect to your vehicle's systems, read the stored codes and then verify the cause with hands-on checks. A fault code is a starting point, not the final answer, so we confirm the problem before recommending any repair. You'll get a clear explanation and a quote before we do any work.

What's included
- Engine and emissions (check engine light) diagnostics
- ABS and traction control warning lights
- Airbag and SRS warning lights
- Battery and charging warnings
- Live data and sensor testing
- Fault verification before any parts are fitted
- Re-scan to confirm the repair after work
The benefits of our diagnostics service
Find the real cause
A fault code points to a system, not always the exact part. We verify the cause so the repair fixes the problem the first time.
Clear explanation
We translate the technical findings into plain English so you understand what's happening and why.
Avoid wasted parts
Proper diagnosis helps avoid replacing good parts based on a code alone, which can save you money.
Quote before repair
Once we know the cause, we give you a quote and only proceed with your approval.
Simple, honest and hassle-free
Here's what to expect when you bring your car to us.
- 1
Scan and read codes
We connect to your vehicle and read the stored fault codes and live data.
- 2
Investigate
We use the codes as a guide and carry out hands-on checks to confirm the actual cause.
- 3
Explain and quote
We talk you through what we found and provide a quote for any repair needed.
- 4
Repair and re-check
With your approval we carry out the fix and re-scan to confirm the fault has cleared.
What to expect when you book in
No mystery, no runaround. Here's the honest version of how a booking goes — and what we'll need from you so we can get it right the first time.
Booking or dropping in
For servicing, diagnostics and repairs it's best to call ahead on 0481 309 775 so we can set aside the time. Quick jobs and questions are welcome as a drive-in — give us a ring first if you can and we'll let you know the best time to come by.
How long it takes
Times vary by vehicle and what we find once we're into the job, so we don't quote a one-size-fits-all turnaround. Tell us if you need the car back by a certain time and we'll do our best to work around it.
What to bring
Your logbook if it's a service, and a quick note of anything you've noticed — a noise, a light, a leak or a change in how it drives. The more you tell us, the faster we get to the cause.
Signs it's time for diagnostics
Notice any of these? Give us a call and we'll take a look.
- !A check engine or warning light has come on
- !A warning light flashes or comes and goes
- !The car has gone into a reduced-power or limp mode
- !Rough idling, stalling or hesitation
- !Another workshop replaced parts but the fault returned
Ready to book this in?
Booked in or just after a price for diagnostics? Call the workshop and talk straight to the people doing the work — we'll give you honest advice and a clear quote before anything starts.
On Cross Keys Rd, Salisbury · Drive-ins welcome · 4.6 on Google
What diagnostics costs
Every car's different, so we don't do one-size-fits-all pricing. Here's how it works — and our promise that you'll never get a surprise on the invoice.
What affects the price
- Your make, model and engine
- The parts and fluids your car needs
- What we find during the inspection
- Any extra work — only ever with your OK
our promise
- A free, no-obligation quote first
- A clear price before any work starts
- Your approval before any extras
- Fair, independent-workshop prices
Logbook stamped, warranty protected, work that's recorded
Having your car serviced and repaired here doesn't put your new-car warranty at risk. Under Australian Consumer Law, work done by a qualified independent workshop to the manufacturer's schedule, using suitable quality parts, should not on its own void your warranty. We service to spec, use parts and fluids that meet the manufacturer's requirements, and stamp your logbook so your history stays complete.
- Serviced to your manufacturer's schedule, logbook stamped
- Genuine or quality-equivalent parts and fluids
- Every job recorded, so your service history stands up at resale
- A quote before any work, and your OK before any extras
General information, not legal advice — but it's how an honest independent workshop should work, and how we do.
Diagnostics questions
Common questions about this service. Call us if yours isn't covered.
Yes, it's worth having it looked at. Some faults clear temporarily but the underlying issue remains and the code is often still stored. A scan can confirm whether there's something to address.
Not always. A scan tool reads codes that point to a system or circuit, but confirming the exact cause usually needs further testing. That's why we verify before recommending any repair.
You deal with the people actually fixing your car — not a service desk.
A real, independent workshop on Cross Keys Rd. Clear quotes, honest advice, and work we'd be happy to put our own name to — because we do.
You might also need
Mechanical Repairs
General mechanical repairs from minor fixes to larger engine and driveline work.
Learn moreBatteries & Starting
Battery testing and replacement, plus starting and charging system checks.
Learn moreCooling System & Radiator
Radiator, coolant, water pump and overheating repairs to keep your engine cool.
Learn morewhile your car's in
Booked in for one job? We'll do a quick visual check and flag anything else we spot — with a quote before any extra work.
across the north
Servicing drivers from Salisbury, Para Hills, Mawson Lakes, Pooraka and beyond.
Need diagnostics? We can help today.
Call Speed Service for honest advice and a fair price. Drive-ins welcome.

