Car Diagnostics

Our approach to diagnostics is different to many others, we don’t offer just a fault code read service. This virtually never proves the part in question is actually at fault and often leads to good condition parts being replaced for no reason. For this reason, we offer a Diagnostic Evaluation.

Please note we do not carry out diagnostic work on all brands of vehicle. We are German Car Specialists, and this is where our experience and skills are best put into practice.

There are many steps involved in our evaluation process:

  • First, we will consult you and find out as much information as possible about how and when the fault occurs.
  • We will then evaluate the car and try to replicate the fault in question.
  • We will carry out a full vehicle fault code report, using the most suitable diagnostic tool for the job.
  • We will spend the time checking wiring diagrams, checking for any relevant TSB (Technical Service Bulletins), and make a test plan.
  • Functional tests, basic wiring checks, checking sensor signals using specialist equipment like oscilloscopes and test gauges and spending up to one hour of time on your car.
  • If the fault is of a more complex nature, we will make contact to discuss what the next steps are.

The cost of this is from £120 inc. VAT*

We have invested tens of thousands of pounds into the latest diagnostic equipment, with all systems kept up to date with expensive subscriptions to allow us to troubleshoot issues on nearly all makes and models of car and small vans.

We have found in recent times that sometimes the generic/aftermarket diagnostics systems just aren’t good enough to get the job done, so for our core market, we have bought the genuine manufacturers’ tools that allow us to communicate with your car in the correct way.

We currently have OEM factory diagnostic access, with direct links to these manufacturers:

  • VW/Audi/Seat/Skoda – ODIS
  • BMW/Mini – ISTA
  • Mercedes Benz – Xentry and DAS (Star)
  • Bentley – ODIS**
  • Porsche – Piwis III (in progress)**

With having all the correct information and test data for your particular car, we can carry out much more in-depth testing and avoid just buying parts in the hope that it might fix the problem, saving you money in the long run.

Just some of the main functions we can carry out:

  • Key coding – (genuine keys supplied by us only)
  • Control module replacement – new units only
  • Control module initialisation – many only come part-loaded
  • Control module coding
  • Component protection removal
  • SVM coding/adaption
  • Software update

To enable us to run diagnostics as efficiently as possible, please provide information here, and one of our team will get back to you shortly.

*Price stated is for the first hour. If more time is needed, we will make contact with an update and request extra time. Porsche diagnostics is charged at £150 inc vat due to increased costs for the necessary information and diagnostic equipment required.

**These systems are in the process of being obtained – updated May 2024



To find out more about Car Diagnostics in Yeovil, get in touch online or call us directly on 01935 427139

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Our Location

Find Us

Robert Cockings Motor Repairs, Unit 2
33 Oxford Road, Pen Mill Trading Estate
BA21 5HR
01935 427139

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Opening Times

Monday 08:30 - 17:30
Tuesday 08:30 - 17:30
Wednesday 08:30 - 17:30
Thursday 08:30 - 17:30
Friday 08:30 - 17:30
Saturday Closed
Sunday Closed

© Robert Cockings Motor Repairs - 2024