Struggling with a warning light or an unexplained vehicle fault? At Lehane Autos, we provide professional car diagnostics and coding services in Swansea, backed by over 20 years of automotive electronics expertise. Whether you’re a local driver or a trade garage in need of advanced fault finding, our team is equipped to solve even the most stubborn electronic issues.
Why choose us?
- Over 20 years’ auto-electrical experience
- Trusted by local garages for complex diagnostics
- Dealer-level diagnostic tools for all major brands
- Main dealer login access for security coding and software updates
- Mobile and garage-based diagnostics available
- Retrofits and vehicle coding included
- TASSA-registered and fully insured
- VW/Audi Group Authorised Specialist
- Transparent pricing and honest advice
Call now or use the form to book an appointment

What Our Vehicle Diagnostics Cover
We carry out car diagnostics in Swansea on a wide range of electrical systems, including:
- Engine management & emission faults
- Componect protection for German manufacturers
- ABS, traction & stability control
- Airbags & occupant systems
- Immobilisers & security faults
- Retrofits and feature coding
- Audio System Faults
- Sensor Issues
- DPF, EGR, and sensor issues
Our cutting-edge diagnostic tools and software allow us to communicate directly with your vehicle’s ECUs (Engine Control Units) — identifying root causes, not just symptoms.

For Trade & Public
We proudly support both private vehicle owners and local garages across Swansea and the surrounding areas. If your garage is stuck with a tricky electronic fault, we can step in to provide an expert diagnosis and help you fix the issue.
Dealer-Level Coding & Software Updates
We’re not just plug-in-and-go. As authorised users of main dealer-level software portals, we have the capability to:
- Code and activate new vehicle components
- Perform security programming
- Run software updates for enhanced performance or fixes
- Integrate manufacturer retrofit features
This means less guesswork and more precise, manufacturer-grade service.

Common Vehicle Faults We Diagnose
Our diagnostics specialists in Swansea frequently resolve issues such as:
- Persistent dashboard warning lights
- Intermittent starting issues
- Unresponsive ECU components
- Malfunctioning sensors
- Immobiliser lockouts
If a warning light is on and you’re unsure what it means, don’t delay. Early diagnostics can prevent costly repairs.
AVAILABLE 5 DAYS A WEEK 9AM - 6PM
1,3,4 & 12 month payment options
contact for a quotation
Why Use Lehane Autos for Diagnostics?
Many garages rely on us to diagnose the problems they can’t. Here’s why:
Experience that matters
We work closely with all makes and models, from Fords to Ferraris.
Professional-grade tools
We use advanced scan and programming tools compatible with nearly every make and model.
We fix what others can’t
Complex electrical faults are our speciality.
Convenience
Visit our Morriston garage or request mobile support across Swansea.

We offer real-world problem-solving and strategies, not just relying on guesswork.
Vehicle Retrofits & ECU Programming
Many vehicle enhancements or replacements require specialised coding. We provide full retrofit support, including:
- Cruise control installation
- Parking sensor activation
- Aftermarket lighting and systems
- ECU replacement programming
…and more.
We support vehicles requiring bootmode access or secure programming, including high-security systems in newer models.
No upsells. No jargon. Just expert advice.
Frequently Asked Questions (FAQs)
How much do vehicle diagnostic checks cost in Swansea?
Our pricing starts from just £80.00 + VAT, depending on the complexity of the fault and systems involved.
Can you fix faults on the same day?
In many cases, yes. We carry common tools and software for instant repairs.
We fix what others can’t
Complex electrical faults are our speciality.
Do you work with garages?
Absolutely. We regularly assist trade garages with advanced diagnostics.
Is this the same as an MOT check?
No. Diagnostics go far deeper and are used when warning lights appear or faults occur.
Ready to Get Started?
Get your vehicle diagnosed by Swansea’s trusted automotive electronics specialists today.
Serving Swansea drivers and trade since 2010
Call us today for no obligation quote.
LEHANE
Head Office
21A Woodfield Street,
Morriston,
Swansea, SA6 8AQ
Call Us
01792 389549
07468 513302
EMAIL US
Info@Lehane.co
Files@Lehane.co