Modern Jaguars are packed with advanced electronics, performance systems and features that assist drivers. These make the cars a pleasure to own. But it can become alarming if warning lights or fault messages arise.

At Leeford Motor Company in Leeds, our technicians use the same level of diagnostic equipment you’d find at a main dealer. Because we’ve worked with premium brands for more than thirty years, we know how to trace faults quickly and fix them properly. This mix of experience and technology matters, especially 

Below is a clear look at how advanced diagnostics can make all the difference for Jaguar owners.

Spotting Issues Early

Many failures of electronics start as small, intermittent warnings. When many people spot a message appearing, then it vanishes, they often assume the problem has fixed itself. In reality, the car may have logged a fault that will still show up under test conditions.

A full diagnostic scan can bring these issues to light. It allows us to:

• Read and interpret the manufacturer-specific codes Jaguars use
• Check live data to see how sensors behave in real time
• Pinpoint whether the fault sits with the sensor, wiring, or a control unit
• Clear historical errors after repair so the system starts clean

Acting early can prevent a minor electrical glitch from turning into a much larger repair bill.

How Our Diagnostic Tools Help 

We can feature this process as part of your service or before repairs, with it featuring the following steps:

Our team can use advanced diagnostics if:

• A warning light is on or has appeared recently
• You have reported a fault, message, or change in behaviour
• The vehicle has intermittent electrical issues
• A system check is needed after a repair or battery replacement
• The manufacturer specifies an electronic check or calibration

On modern vehicles like Jaguars, some service tasks also require diagnostic equipment to:

• Reset service indicators correctly
• Check for stored or pending fault codes
• Monitor live data if a concern is raised
• Perform electronic parking brake service functions
• Carry out adaptations or calibrations where required

Why Advanced Diagnostics Protects Your Jaguar’s Reliability

Many Jaguar systems interact with one another. A fault in one module may cause a second module to behave oddly. For example, a simple battery voltage issue can cause stability control warnings or adaptive suspension faults. Without accurate diagnostics, garages can chase symptoms rather than causes.

At Leeford Motor Company, we look at the whole system. Our technicians use wiring diagrams, guided test plans and technical data that matches Jaguar’s own standards. This approach:

• Reduces unnecessary replacement parts
• Makes repairs quicker and more accurate
• Helps us catch hidden problems before they affect safety or emissions
• Supports long-term reliability, not just a one-off MOT pass

It’s this level of detail that sets a specialist apart from a generalist workshop.

Common Jaguar Faults Our Diagnostics Help Resolve

From our experience, several issues come up frequently on checks of Jaguars:

Emissions and DPF problems:
Older diesels can fail emissions due to clogged filters, faulty pressure sensors, or glow plug issues. Diagnostics show exactly where the blockage or fault lies.

ABS and traction control faults:
Wheel speed sensors and control modules can develop intermittent faults. A scan reveals sensor behaviour and helps isolate wiring faults that are invisible to the eye.

Airbag system warnings:
Loose connectors, faulty seat occupancy sensors, or module communication issues cause MOT failures. Diagnostics during a service point directly to the affected component.

Lighting and adaptive headlamp issues:
Jaguar’s intelligent lighting systems depend on level sensors and control units. If they misread, you’ll see a dashboard warning. We can check calibration and reset the system if needed.

These examples show how much easier and more accurate preparing for an MOT becomes when diagnostics are handled properly.

The Benefit for Drivers in Leeds

Because we’re based two minutes from Leeds city centre, most customers drop their Jaguar off, grab a coffee, or head into the Victoria Quarter while we work- the perfect place for shopping this spring! 

Everything we do is covered by our 12-month or 12,000-mile parts and labour warranty. We also follow all manufacturer schedules and only use original equipment parts, so your Jaguar’s warranty remains protected.

Simply contact us today to book a service for your Jaguar.