Vehicle Maintenance FAQ

Updated 10 months ago by Olivier

What is Remote Maintenance for LCVs?

Masternaut’s Remote Maintenance allows remote collection of up-to-date maintenance information straight from the vehicle’s electronic control system.

What are the key benefits of Remote Maintenance?

Remote Maintenance benefits include

  • Make fleet safer with live maintenance data collected on the vehicle CAN bus.
  • Improve maintenance planning with centralised faults and servicing information
  • Enrich fleet administration system with maintenance data via Connect API

What faults are recorded?

Common faults collected include Engine Check, ABS malfunction, Oil temperature and Pressure, Water Temperature and Vehicle Servicing.

Which faults/codes?

Potential fault codes that are available

Fault Code







Braking System




Engine water temperature


Engine oil level


Brake fluid level


Engine oil pressure


Low coolant fluid level




Engine Warning Light


Excessive engine water temperature


Alternator Defect


Brake pads worn out


Low Battery Alert

How is Remote Maintenance information viewed?

Remote Maintenance reports can be viewed via a web browser or received as a regular email.  

In addition their are APIs available.

Is this suitable for all types of vehicles?

The solution is suitable for light commercial vehicles (LCVs), and some cars. HGVs are out of scope of this product.

Which vehicles are supported?

Compatibility can vary between make and models and although Masternaut maintains a high level of coverage this will vary from fleet to fleet and the services required. During the pre-sales process Masternaut will complete a full analysis of the fleet and report on the customer’s specific coverage.

How does Masternaut keep up-to-date with new vehicles?

Masternaut has a dedicated engineering team who are responsible for maintaining vehicle compatibility for Masternaut systems.  Based on market analysis of ​the​ top 100 LCVs and cars​ in UK and France the team proactively identifies ​new models to be reversed.

The process of reverse engineering involves gaining access to the vehicle, identifying where the CANbus cables to connect to (non intrusive clamps) and then perform diagnostics to identify specific data on the CANbus data, for example ​fuel ​consumption ​and ​speed.  After which the vehicle will be classified as compatible, not compatible or partially compatible​, depending on the amount of ​data available​.​

How can maintenance reports be accessed?

When Remote Maintenance is purchased configuration will be deployed to compatible vehicles, and software features will be made available to the customers Connect account.  

Each user requiring access to the reports needs to have the following features in their user access ‘role’.  

Admin > Roles > Reporting > Reports Library> Maintenance Due Report and Maintenance Fault Report

Whats the ‘Maintenance Fault Report’ ?

This report list vehicles with faults and highlights the faults that are currently active.

For each fault, the reports shows:

  • The description of the fault - note that Unknown Fault is reported if a fault is detected on for the vehicle but the nature of the fault has not been verified by Masternaut.
  • Date the fault was detected
  • Date the fault was no longer detected
  • The Odometer when the fault was detected
  • The Odometer was no longer was detected
  • If the Fault is currently active.

Whats the ‘Maintenance Due Report ‘?

This report lists all vehicles where a service due date is set.   For each vehicle, the reports shows;

  • The service due date
  • Distance to the service due date
  • Whether the service is overdue.

How is the service due date calculated?

Service Due is is calculated as:

  • Using the Days to Service value read on the CANBus
  • Using the value of Kms to service read on the CANBus and using the daily mileage averaged over the last month to extrapolate the service date.

Are there APIs for Remote Maintenance

Remote Maintenance information can also be accessed and integrated to a customer's other business software using APIs.  

These are simple RESTful JSON APIs that are easy to setup and use.  All APIs are fully documented.

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