Do Autel Scanners Support DoIP and CAN FD? Complete Guide

Modern vehicles are becoming more advanced than ever before. With the rapid growth of electronic control units, advanced driver-assistance systems, electric vehicles, and intelligent in-vehicle networks, traditional diagnostic communication methods can no longer meet the needs of many new vehicle models.

Two technologies that are becoming increasingly important in automotive diagnostics are DoIP (Diagnostics over Internet Protocol) and CAN FD (Controller Area Network with Flexible Data Rate). For technicians and repair shops, choosing an automotive scanner that supports these protocols is becoming a critical decision.

Many new vehicle models use higher-speed communication systems to handle the increasing volume of data exchanged among dozens of control modules. Without proper support for these protocols, diagnostic tools may be unable to communicate with certain ECUs, perform advanced functions, or complete programming-related tasks.

So, does the Autel scanner support the DoIP and CAN FD protocols? The answer is yes. Autel has incorporated support for these automotive communication protocols into many of its diagnostic tools, and even the Autel MaxiCheck series—often considered an entry-level line—includes models that support these protocols.

However, not all Autel scanners support these two automotive communication protocols. Different models offer varying levels of compatibility depending on their hardware configuration, software features, and target user base. In this guide, we’ll explain in detail which Autel scanners support the DoIP and CAN FD protocols, how the expansion of these protocols impacts diagnostic work, and how to choose the Autel tool that best meets your needs.

What Are DoIP and CAN FD Protocols in Modern Vehicle Diagnostics?

Before discussing the compatibility of Autel scanners, we first need to understand what the DoIP and CAN FD protocols are in order to appreciate their importance in modern vehicles. These communication protocols enable the various modules in a vehicle to communicate efficiently and exchange information, ensuring the vehicle operates properly.

CAN FD: A Faster Version of Traditional CAN Communication

CAN FD (Controller Area Network Flexible Data-Rate) is an advanced version of the traditional CAN protocol that has been widely used in automotive systems for years.

Traditional CAN networks have limitations in data speed and message size. As vehicles added more ECUs and more complex functions, these limitations became increasingly obvious. CAN FD was developed to overcome these challenges by allowing larger data frames and faster communication speeds.

Compared with classic CAN, CAN FD provides several advantages:

• Higher data transmission capacity
• Faster communication between ECUs
• More efficient data exchange
• Better support for complex vehicle systems

For diagnostic tools, CAN FD support means faster vehicle scans, improved communication with newer control modules, and better compatibility with modern vehicles.

Many newer vehicles from manufacturers such as BMW, Mercedes-Benz, Volkswagen, and General Motors have adopted CAN FD technology in their vehicle networks.

Figure 1: CAN FD communication in modern vehicles

DoIP: Diagnostic Communication Over Automotive Ethernet

DoIP (Diagnostics over Internet Protocol) is a diagnostic communication technology based on automotive Ethernet.

Unlike traditional CAN communication, which uses dedicated vehicle networks with limited bandwidth, DoIP uses Ethernet technology to provide significantly higher communication speeds.

DoIP was developed to support advanced diagnostic operations, including:

• Faster ECU identification
• High-speed vehicle scanning
• ECU programming
• Software updates
• Advanced module communication

This technology is especially important for newer luxury vehicles with a large number of control units.

For example, modern BMW and Mercedes-Benz vehicles may contain dozens of ECUs controlling everything from engine performance and transmission operation to driver assistance features and infotainment systems. Communicating with these modules efficiently requires a faster diagnostic connection.

Does Autel Support DoIP and CAN FD Protocols?

When choosing a diagnostic scanner for modern vehicles, many technicians want to know one simple thing: Does the scanner support both DoIP and CAN FD?

Autel scanners that support these protocols can communicate with modern vehicle networks more efficiently, allowing technicians to perform deeper diagnostics and access more vehicle systems.

Some Autel diagnostic platforms supporting DoIP and CAN FD communication include:

Among them, the Autel MaxiSys Ultra S2 represents one of Autel’s most advanced diagnostic platforms. It combines modern communication protocol support with advanced functions such as topology mapping, ECU programming capabilities, intelligent diagnostics, and comprehensive system analysis.

For technicians working with newer European vehicles, including BMW, Mercedes-Benz, Volkswagen, and other brands that increasingly rely on Ethernet-based diagnostics, DoIP support can be especially valuable.

Meanwhile, CAN FD support improves compatibility with newer vehicle platforms from manufacturers that have upgraded their internal communication networks.

However, it is important to understand that protocol support alone does not determine the complete diagnostic capability of a scanner. A tool may support CAN FD or DoIP but still have limitations depending on:

• Vehicle coverage
• Software version
• Available service functions
• Hardware configuration
• Manufacturer-specific diagnostic capabilities

Therefore, users should always consider the overall capability of the scanner instead of only checking whether a protocol is supported.

How Do Autel Scanners Use DoIP and CAN FD for Vehicle Diagnostics?

Autel scanners utilize DoIP and CAN FD protocols to enhance communication with modern vehicle networks. DoIP allows the scanner to connect to Ethernet-based vehicle systems, providing faster data transfer and more reliable communication with multiple ECUs simultaneously. This is particularly useful for vehicles with complex electronic architectures.

Most Autel Scanners Support DoIP and CAN FD Protocols

CAN FD, on the other hand, extends the capabilities of the traditional CAN bus by allowing larger data payloads and higher transmission speeds. This ensures that the scanner can effectively communicate with newer vehicle platforms that have adopted CAN FD for their internal networks.

By supporting both protocols, Autel scanners can offer comprehensive diagnostics, faster data retrieval, and improved compatibility with a wide range of modern vehicles.

Faster Vehicle Scanning and ECU Communication

Modern vehicles may contain dozens of control modules, including engine, transmission, ADAS, battery, and body control systems. DoIP and CAN FD enable faster data transfer between the scanner and vehicle, reducing scan time and improving diagnostic efficiency.

Enhanced Support for Advanced Functions

High-speed communication is important for advanced diagnostic operations such as ECU coding, adaptations, module configuration, and programming-related functions. Autel scanners with DoIP and CAN FD support can better communicate with newer vehicle platforms that require these technologies.

Better Compatibility with Newer Vehicles

As manufacturers adopt advanced communication networks, vehicles increasingly rely on protocols like CAN FD and DoIP. Autel scanners equipped with these technologies help technicians diagnose newer models from brands such as BMW, Mercedes-Benz, Volkswagen, and other manufacturers more effectively.

Do You Need an Autel Scanner with DoIP and CAN FD Support?

Not every vehicle owner needs a scanner with advanced communication protocols. Whether you need DoIP and CAN FD support depends largely on the type of vehicles you work with and the diagnostic functions you perform.

For DIY Vehicle Owners

If you mainly perform basic maintenance tasks such as:

• Reading and clearing fault codes
• Checking engine problems
• Viewing live data
• Resetting service lights

A basic OBD2 scanner may already meet your needs.

Choose basic OBD2 scanner

However, if you own a newer vehicle and want a scanner that can support future diagnostic requirements, choosing an Autel model with CAN FD compatibility can provide better long-term value.

For Independent Repair Shops

For independent mechanics, supporting modern communication protocols is becoming increasingly important.

Customers are bringing newer vehicles into repair shops every year, and technicians need tools that can communicate with the latest vehicle systems.

An Autel scanner with DoIP and CAN FD support can help repair shops:

• Diagnose newer models
• Access more vehicle systems
• Perform advanced maintenance services
• Reduce dependence on dealership tools

For many independent workshops, investing in a scanner with modern protocol support can improve service capability and expand business opportunities.

For Professional Automotive Technicians

Professional technicians working on European vehicles, luxury vehicles, EVs, or advanced diagnostic cases should strongly consider scanners with DoIP and CAN FD support.

These technologies are becoming standard in modern vehicle networks, and diagnostic equipment must continue evolving alongside vehicle technology.

A professional-grade Autel scanner with these protocols provides better preparation for future repair demands.

Conlusion

Modern vehicles are becoming increasingly dependent on advanced communication networks, making DoIP and CAN FD support an important feature for automotive diagnostic scanners.

Autel has integrated these protocols into a wide range of diagnostic tools, from the MaxiCheck and MaxiCOM series to professional MaxiSys platforms. Models such as MX900, MK900, DS900, MP900, MS906 Pro, MS909, MS919, Elite II Pro, Ultra Lite, Ultra, and Ultra S2 support both DoIP and CAN FD, allowing technicians to communicate with many newer vehicle systems more efficiently.

For DIY users, choosing an Autel scanner with these protocols provides better compatibility with newer vehicles. For professional technicians and repair shops, DoIP and CAN FD support helps improve diagnostic efficiency, expand service capabilities, and prepare for the next generation of automotive technology.

When selecting an Autel diagnostic tool, protocol support should be considered together with other factors, including vehicle coverage, advanced functions, hardware performance, and your specific repair needs.