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Portsmouth Vehicle Fault Diagnostics

JKM Motor Services Ltd are very proud of the reputation that we have, especially when it comes to our diagnostics and investigation skills with vehicle faults, both mechanical and electronically. Our ability to find the root-cause of any faults or issues present is down to years of knowledge, experience and investment in the most up to date dealer level diagnostic tools.

The Team at JKM are true car enthusiasts and have built up a vast amount of knowledge through hands on experience alongside constant education in the latest automotive developments – this is something that is reflected in the number of local garages that use JKM for diagnostics and fault finding every week.

We make substantial investment in having the most up to date diagnostic equipment, coupled with access to dealership level automotive data for VW, Audi, Seat and Skoda JKM are confident that we can identify and solve any issues you may be experiencing.

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    Here you will find some more information about just some of the specialist tooling we use:


    ODIS is a Dealership-level electronic diagnostic tool which aids with fault code reading, diagnostics and investigation into vehicle fault, ranging from small issues through to the most complex electrical issues. ODIS also allows us to carry out coding of control units, key programming, software updates and much more.

    Besides JKMs extensive knowledge and experience in house – we have access to all the technical product information issued by the VAG Group for all its models.

    You can be confident that JKM can undertake any service and repair work without having to involve main dealerships.

    ODIS Diagnostic


    Previously known as VAG-COM (re-branded as VCDS in 2011) is a sophisticated VW/Audi group (V.A.G) diagnostic tool.

    VCDS performs the functions of the various dealership level tools plus lots more. A few of the functions that VCDS enables JKM to perform are outlined below:

    • Read and clear fault codes from all vehicle systems fitted, e.g. Engine, Airbag, ABS, Instruments, Automatic Gearboxes, Parking sensors etc.

    • View live data from the sensors within the car – in real time.

    • Reset service lights (both fixed and variable service intervals)

    • Read stored and intermittent fault codes

    • Graph and log live data with the car running

    • Automatically read fault codes from all car systems in a single search

    • Diagnostic codes can be printed out and logged for future reference.

    • Access to over 16,000 fault code definitions and a comprehensive support network to route cause faults.

    Besides JKMs extensive knowledge and experience in house – we have access to all the technical product information issued by the VAG Group for all its models.
    You can be confident that JKM can undertake any service and repair work without having to involve main dealerships.


    Advanced driver-assistance systems (ADAS), are electronic systems that help the vehicle driver while driving or during parking. When designed with a safe human-machine interface, they are intended to increase car safety and more generally road safety.

    How does ADAS work?

    ADAS uses camera-based sensors that allow the car to and helps the driver to be better aware of the driving environment. Cameras are installed outside the vehicle, mainly at the top, front, back, sides to capture the images of various objects and traffic sign-language like street, road signs, vehicles, pedestrians and other objects.

    In the vehicle, images are captured by the cameras and analyzed by the specially designed software and the information then used to improve safe driving. And in case of any emergent action, it will initiate emergency braking, alerting the driver if they drift out of the lane and helping them to park the car accurately.

    Essential safety-critical ADAS applications include:

    • Pedestrian detection/avoidance
    • Lane departure warning/correction
    • Traffic sign recognition
    • Automatic emergency braking
    • Blind spot detection

    Modern vehicles today have advanced driver-assistance systems integrated to their electronics and manufacturers refresh their car models to add more of these features into their cars. Early advanced driver-assistance systems include electronic stability control, anti-lock brakes, lane departure warning, adaptive cruise control and traction control. These systems can be affected by mechanical alignment adjustments or damage from a collision. This has led many manufacturers to require electronic resets for these systems, after a mechanical alignment is performed.

    At JKM we have invested in the latest ADAS alignment and calibration equipment to be able to aid with fault finding any issues with your Advanced driver-assistance systems on your VW, Audi, Seat or Skoda and carry out reset and calibration procedures. We can also offer body shops ADAS alignment with approved certificates for insurance. Contact us for more details.

    What Our Customers Say

    Phil B – Portsmouth

    I have been using JKM for all my car servicing and repairs for over ten years. Although they specialise in VAG cars, they’re also good with other makes. Very trustworthy and honest about what needs doing. Better than VW on diagnosis and repair from my experience.

    Mun Cheung – Portsmouth

    These guys 100% know what they are doing. I usually come to these guys for the big bad problems that I can’t fix myself and they always come through for me. Looked after my Corrado G60 and now Audi S4 with care and attention. Super friendly and knowledgeable. Worth the money.

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