What Vehicles Do You Have Dealer-Level Diagnostic Access For?
Dealer-Level Diagnostics for a Wide Range of Vehicle Makes
Not all vehicle diagnostic equipment is the same.
A standard diagnostic scanner can be useful for reading common fault codes, but modern vehicles often require manufacturer-specific diagnostic systems to access deeper vehicle systems, advanced functions and detailed diagnostic information.
At Devon Auto Diag, we have dealer-level diagnostic access for a wide range of vehicle manufacturers. This allows us to carry out more advanced diagnostics than a standard generic scan on supported vehicles.
Our mobile dealer-level diagnostic service covers Exeter, Plymouth, Torquay, Paignton, Newton Abbot, Exmouth, Tiverton, Barnstaple and surrounding areas across Devon.
What Does Dealer-Level Diagnostic Access Mean?
Dealer-level diagnostic access allows us to communicate with your vehicle using manufacturer-specific diagnostic systems.
Depending on the vehicle make, model and year, this can provide access to additional control modules, manufacturer-specific fault codes, live data, advanced system information and diagnostic functions that may not be available through a generic diagnostic scanner.
This can be particularly useful when dealing with complex, intermittent or manufacturer-specific vehicle faults.
Vehicle Makes We Have Dealer-Level Diagnostic Access For
We currently have dealer-level diagnostic access covering the following vehicle manufacturers:
A
- Alfa Romeo
- Audi
B
- BMW
- BYD
C
- Chevrolet
- Chrysler
- Citroën
D
- Dacia
- Dodge
- DS
F
- Fiat
- Fisker
- Ford
G
- Genesis
H
- Honda
- Hyundai
I
- Infiniti
- Isuzu
- Iveco
J
- Jaecoo
- Jaguar
- Jeep
K
- Kia
L
- Lamborghini
- Land Rover
- Leapmotor
- Lexus
- Lotus
M
- MAN
- Maserati
- Maxus
- Mazda
- McLaren
- Mercedes-Benz
- MINI
- MG
- Mitsubishi
N
- Nissan
O
- OMODA
P
- Peugeot
- Porsche
R
- Renault
- Rolls-Royce
S
- SEAT
- Škoda
- smart
- SsangYong
- Subaru
- Suzuki
T
- Toyota
V
- Vauxhall
What Can Dealer-Level Diagnostics Do?
The exact capabilities available depend on the vehicle’s make, model, year, engine and equipment fitted.
Depending on the vehicle, dealer-level diagnostics may allow us to access and investigate:
- Engine management systems
- Transmission and gearbox systems
- ABS and traction control
- Airbag and SRS systems
- Body control modules
- Parking and driver assistance systems
- DPF and emissions systems
- AdBlue and emissions-related systems
- Battery management systems
- Manufacturer-specific fault codes
- Live vehicle data
- ECU communication faults
- Vehicle network and communication systems
- Other manufacturer-specific control modules
This advanced access can be particularly useful when a generic diagnostic scan doesn’t provide enough information to identify the cause of a fault.
Why Choose Dealer-Level Diagnostics?
A fault code doesn’t always mean that the component named in the code is actually faulty.
For example, a sensor-related fault could potentially be caused by the sensor itself, wiring, power supply, another component or communication between control modules.
Dealer-level diagnostics allow us to investigate the vehicle more thoroughly and, where supported, analyse additional information and live data.
This can help reduce unnecessary guesswork and provide a clearer picture of what is happening with your vehicle.
Dealer-Level Diagnostics vs Standard Diagnostics
Not every vehicle fault requires dealer-level diagnostics.
For straightforward warning lights and common fault codes, a standard diagnostic scan may provide enough information.
However, dealer-level diagnostics can be particularly useful when:
- A generic scan hasn’t identified the problem
- A fault keeps returning
- Your vehicle has multiple warning lights
- You have an intermittent electrical fault
- Multiple control modules are communicating incorrectly
- A manufacturer-specific fault code has been identified
- You need deeper access to a particular vehicle system
- The vehicle requires manufacturer-specific diagnostic functions
Because dealer-level diagnostics involve more advanced equipment and additional diagnostic capabilities, this service is priced higher than a standard diagnostic scan.
Do You Have Dealer-Level Access for My Vehicle?
If your vehicle make appears on the list above, we have dealer-level diagnostic access for that manufacturer.
However, the exact diagnostic functions available can vary between individual models, years, engines and specifications.
If you’re unsure whether we can carry out dealer-level diagnostics on your vehicle, simply contact us with:
- Vehicle make
- Model
- Year
- Engine size or engine type
- A description of the fault
We’ll be able to advise whether our dealer-level diagnostic service is suitable for your vehicle.
Mobile Dealer-Level Diagnostics Across Devon
One of the biggest advantages of Devon Auto Diag is that our diagnostic service is fully mobile.
Rather than automatically taking your vehicle to a main dealer or specialist workshop, we can bring our professional diagnostic equipment directly to you.
We provide mobile dealer-level diagnostics across:
- Exeter
- Plymouth
- Torquay
- Paignton
- Newton Abbot
- Exmouth
- Tiverton
- Barnstaple
- And surrounding areas of Devon
Whether your vehicle is at home, at work or at another suitable location, our mobile service makes advanced diagnostics more convenient.
Need Dealer-Level Diagnostics in Devon?
If you’re experiencing a warning light, recurring fault, electrical problem or difficult-to-diagnose issue, dealer-level diagnostics may provide the additional information needed to investigate it properly.
Devon Auto Diag provides professional mobile dealer-level diagnostics for a wide range of vehicle manufacturers across Devon.
Contact us with your vehicle details and we’ll confirm whether dealer-level diagnostic access is available for your specific make and model.
Professional dealer-level diagnostics. Advanced vehicle fault finding. Fully mobile across Devon.

