Diagnostic Inspection at Your Door

Professional vehicle diagnostics brought directly to you

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Stop Guessing & Start Driving

A diagnostic inspection is designed to identify the root cause of a vehicle fault, not guess at symptoms or replace parts blindly.

When warning lights appear, performance drops, or a car begins behaving unpredictably, the "Old Way" involves booking a dealer appointment weeks in advance and paying premium rates just for a scan.

We offer the "Smart Way" by providing professional mobile diagnostic inspections that are carried out at your home or workplace.

Rather than relying on assumptions, we use specialist diagnostic equipment to interrogate your vehicle’s onboard systems. This allows faults to be identified precisely, saving time, unnecessary expense, and repeat repairs, all without interrupting your day.

A digital OBDII scanner identifying engine faults during a mobile visit in Maidenhead. We provide instant clarity on why your car is running poorly or misfiring.

Signs You Need a Diagnostic Inspection

Diagnostic inspections are commonly booked when a dashboard warning light appears, but they are equally valuable when no warning light is present and the vehicle simply doesn’t feel right. If you notice these symptoms, you need a scan:

Warning Lights: The "Check Engine," ABS, Airbag, or DPF light is illuminated on the dashboard.

Rough Idling: The car shakes, stutters, or feels unstable when stopped at traffic lights.

Loss of Power: The vehicle feels sluggish, won't accelerate properly, or has gone into "Limp Mode."

Poor Fuel Economy: You are using significantly more fuel than usual for the same journeys.

Starting Problems: The car struggles to start, cranks slowly, or fires up and immediately cuts out.

Misfiring: The engine jerks or hesitates while driving, often accompanied by a popping sound.

Intermittent Electrical Faults: Windows, locks, or lights work sometimes but fail at other times.

What Our Diagnostic Inspection Covers

Maxamy Mobile Autocare provides a comprehensive fault-finding service. During a diagnostic inspection, we connect professional diagnostic equipment directly to your vehicle and carry out a structured process based on your symptoms.

We scan major onboard systems for stored or active fault codes. This includes engine management, fuel and emissions systems, braking and ABS systems, transmission and gearbox sensors, starting and charging systems, and vehicle electrical components. This digital interrogation reveals the specific error codes stored by the vehicle's ECUs.

On-site fault code reading by a Maxamy Mobile Autocare technician in Windsor. We plug into your vehicle's onboard computer to quickly diagnose starting issues and performance drops.Schedule Online

Reading a code is often not enough. We analyse live sensor data and interpret system behaviour to see exactly what the engine is doing in real-time. This allows us to assess system performance against manufacturer parameters and determine whether an issue is electrical, mechanical, sensor-related, or software-driven.

Mobile mechanic performing an OBD diagnostic scan inside a car to identify engine fault codes and warning lights in High WycombeSchedule Online

Suspension arms and joints support the vehicle’s weight and maintain stable wheel positioning through everyday driving conditions. We carry out ball joint replacement when wear causes knocking, instability, or excessive movement in the suspension. We also provide suspension lower arm replacement when bushings or mounting points degrade, helping restore correct suspension geometry and predictable handling.

Mobile mechanic checking engine oil level during a routine car service carried out at a customer’s home in Reading and nearby areasSchedule Online

As part of the diagnostic inspection, fault codes can be safely cleared once the underlying issue has been identified or resolved. We do not recommend clearing codes without diagnosing the fault, as warning lights commonly return if the root cause is ignored.

Troubleshooting illuminated Brake and ESP Traction Control warning lights. Graeme (Head Mechanic) uses specialist diagnostic tools to resolve stability control faults for drivers in  Buckinghamshire.Schedule Online

After the inspection, we explain exactly what has been found in clear, straightforward terms. You’ll understand what’s causing the issue, whether it needs immediate attention, and what your options are. If repairs are required, you’ll receive a free no-obligation quote before any work is carried out.

Mobile mechanic using diagnostic equipment as part of a thorough pre-purchase vehicle inspection in BerkshireSchedule Online

Why Choose Maxamy Mobile Autocare?

Diagnosing "Check Engine" and "Low Oil Pressure" warning lights in Chesham. Maxamy Mobile Autocare identifies the root cause of engine management alerts to prevent catastrophic failure.

Fixed Price of £54.99
We offer diagnostic inspections at a fixed price of £54.99 with no hidden fees and no obligation to proceed with repairs.

We Come To You
Don't risk driving a car with a red warning light. Maxamy Mobile Autocare comes to you at your home or workplace to carry out the inspection.

No Guesswork
We don't just "throw parts" at a car. We use professional diagnostic tools to find the specific sensor, wire, or mechanical failure causing the issue.

Same-Visit Fixes
In many cases, if the fault identified is minor and does not require additional parts or extended labour, repairs can often be completed during the same visit.

How to
Book Your
Inspection

Schedule Your Diagnostic Inspection
Contact us via phone, WhatsApp, or our online form to schedule in a fixed-priced diagnostic inspection.

Choose Your Date & Time
Then simply let us know your desired date and location for the inspection.

What Happens During the Inspection
We arrive, plug in and scan your vehicle, identify the root cause and give you a full breakdown of what's causing the issue and recommend the logical next steps.

Diagnostics Across Every System

Maxamy Mobile Autocare uses dealership-level diagnostic equipment to interrogate your vehicle's onboard computers.

Once we identify the root cause, we provide expert repairs across these nine core categories:

When the "Check Engine" light appears, it could be anything from a simple sensor to a mechanical timing issue. We scan for fault codes and analyse live data to pinpoint exactly which component is failing before we begin work.

Even functional body components rely on electronics. We diagnose electric window motor failures and central locking actuator faults to ensure your vehicle remains secure and operational.

Electrical issues can be intermittent and frustrating. We use professional diagnostic tools to trace parasitic battery drains, alternator failures, and faults within your lighting or central locking systems.

If your car is in "Limp Mode" or suffering from poor MPG, the issue likely sits within your fuel delivery. We diagnose faulty injectors, failing fuel pumps, and mass air flow (MAF) sensor irregularities.

Is your ABS light glowing or are your brakes pulsing underfoot? Our diagnostics can differentiate between a failed wheel speed sensor, a hydraulic control fault, or physical wear on your pads and discs.

Non-starting issues are often diagnosed as faults within the starter motor, ignition coils, or glow plugs. We verify the electrical signal before replacing parts to ensure your car fires up every time.

A temperature warning light requires immediate interrogation to prevent engine warping. We perform pressure tests and diagnostic scans to identify failing water pumps, stuck thermostats, or cooling fan electrical faults.

Failed emissions tests or "Lambda" sensor lights are common diagnostic triggers. We scan your exhaust management system to confirm if you need a new sensor, an EGR valve replacement, or catalytic converter care.

Vague handling or knocking noises often point to worn components. We assess your vehicle's geometry and suspension health to identify failed bushings, snapped springs, or leaking shock absorbers.

Mobile Vehicle Diagnostics Across Berkshire & Buckinghamshire

Maxamy Mobile Autocare provides advanced workshop technology at your location throughout Berkshire and Buckinghamshire. Our professional diagnostic inspections ensure you don't have to risk driving a vehicle with engine problems to a garage.

We offer diagnostic inspections across the region, including Slough, Reading, Maidenhead, Windsor, Ascot, Bracknell, Wokingham, High Wycombe, and Uxbridge, as well as surrounding towns such as Marlow, Henley-on-Thames, Cookham, Bourne End, Egham, and Staines-upon-Thames.

Whether you have an engine light on, need a code read or your vehicle just doesn't seem right, we're ready to help.

Book Your Inspection Today

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Our mechanic will contact you within 24 hours to confirm your inspection.

If you have any questions in the meantime, don't hesitate to call us on: 07816 337 520.
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Diagnostic Inspection FAQs

What is a diagnostic inspection?

A diagnostic inspection is a professional fault-finding service that identifies the cause of a problem on your vehicle. It involves assessing symptoms, checking key systems, and using diagnostic tools where required to pinpoint what needs repairing, rather than guessing or replacing parts unnecessarily.

What does a diagnostic inspection involve?

A diagnostic inspection typically involves reviewing the symptoms, checking for fault codes, testing relevant components, and narrowing down the root cause of the issue. The exact process depends on the fault, how often it occurs, and which system is affected (engine, electrical, braking, emissions, or drivability-related components).

How long does a diagnostic inspection take?

Most diagnostic inspections take around 45–60 minutes, depending on the vehicle and the fault being investigated. Intermittent or complex faults may take longer, especially if the issue cannot be reproduced easily during the visit.

Can you clear dashboard warning lights?

Yes. Dashboard warning lights can be cleared once the fault has been correctly identified and resolved. Clearing warning lights without fixing the underlying cause is not recommended, as the light will usually return and the issue may worsen over time.

Can you fix the problem during the same visit?

In many cases, yes. If the fault is minor and does not require additional parts or extended labour, repairs can often be completed during the same visit. If parts are needed, you will be advised of the next steps and provided with a quote for follow-on work.

Can you diagnose engine and gearbox faults?

Yes. Diagnostic inspections can identify faults across engine and drivability systems, as well as related areas such as sensors, fuel and emissions components, braking warning systems, and electrical issues. If a fault is outside the scope of a standard diagnosis, this will be clearly explained.

Can a mobile mechanic carry out a diagnostic inspection at my home?

Yes. A diagnostic inspection can be carried out at your home or workplace, as long as it is safe to work on the vehicle and access is available. Mobile diagnosis is ideal for warning lights, poor running issues, non-start faults, and many common driveability problems.

What should I do if a warning light comes on?

If a red warning light comes on, you should stop driving as soon as it is safe to do so, as it can indicate a serious fault. Amber or yellow warning lights usually mean the vehicle may still be driveable, but it should be checked as soon as possible to prevent further damage or breakdown.