Smartlink China Version · Global Remote Diagnostic Solution (Ideal for Small & Medium Repair Shops)

As Chinese new energy vehicles (especially BYD and Hongqi) are increasingly exported overseas, more and more overseas repair shops are facing a real problem:

local diagnostic tools cannot truly recognize Chinese models and cannot perform deep diagnostics, only basic OBD-level scanning.

To address this issue, we provide a “China Official Remote Diagnostic Solution”:

By using the China-version Smartlink device + remote access, vehicles overseas can directly use China OEM-level diagnostic capabilities.

This solution is currently mainly applicable to:

• BYD
• Hongqi
• Other models that support the Smartlink protocol standard

⚠️ Note: Not all Chinese brands support Smartlink. Compatibility depends on the vehicle’s ECU architecture and protocol.

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What is “China Official Diagnostic”?

“China Official Diagnostic” essentially means:

Using China domestic diagnostic systems + OEM protocol permissions to perform deep diagnostics, instead of overseas universal OBD “surface-level scanning”.

China official diagnostics can achieve:

• Full vehicle ECU fault code reading (not limited to engine)
• New energy system diagnostics (battery / motor / high-voltage system)
• OEM data stream reading
• OEM fault code interpretation logic
• Module status and software version information

In simple terms:

This is close to China 4S dealership-level diagnostic capability.

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Why Is It So Difficult to Diagnose Chinese Cars Overseas?

Many overseas repair shops encounter these issues when repairing BYD or Hongqi:

• Local diagnostic tools cannot connect to control modules
• Only generic OBD is available, no access to EV systems
• Incomplete fault codes, incorrect explanations
• Unable to determine whether the issue is software or hardware
• Parts replaced but the problem still exists

The core reason is simple:

👉 Chinese new energy vehicles use a large number of private diagnostic protocols, not international standard ones.

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Solution: Smartlink China Version Remote Diagnostics

Customers only need a China-version Smartlink device plus basic hardware to achieve remote China official diagnostics.

Required hardware:

• Windows computer
• Smartlink China version device
• OBD ENET cable (or USB-to-Ethernet adapter)
• Vehicle OBD port

Required software:

• ToDesk (remote control software)

Connection Method (Actual Workflow)

The entire process is very simple:

1. Smartlink connects to the vehicle via OBD cable
2. Smartlink connects to a Windows computer via Ethernet cable
3. The Windows computer runs ToDesk
4. Chinese engineers remotely access the computer
5. OEM vehicle data is read directly through Smartlink

In other words:

The car is overseas, but the diagnostics are done in China.

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What Diagnostic Services Can We Provide?

Based on the China-version Smartlink, we offer:

1. OEM-Level Fault Diagnosis

• Full vehicle ECU scan
• New energy system diagnostics
• OEM fault code interpretation

2. Data Stream Analysis

• Battery voltage / temperature / SOH / SOC
• Motor speed / torque / load
• High-voltage system status
• Charging system data

3. Deep Problem Analysis

• Software logic anomaly detection
• Module communication issues
• System-level fault chain analysis
• Professional recommendations on whether hardware replacement is required

4. Overseas Repair Support

• Provide clear diagnostic conclusions for repair shops
• Reduce incorrect or unnecessary part replacements
• Lower trial-and-error costs

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Why Is This Solution More Suitable for Small & Medium Repair Shops?

This remote solution is essentially designed specifically for small and medium-sized repair shops.

Compared with traditional approaches, it has three very practical advantages:

1️⃣ No Need to Purchase Expensive Dedicated Diagnostic Tools

Many OEM diagnostic tools:

• Are very expensive
• Have complex functions
• Are not used frequently
• Have a very long return-on-investment cycle

With the Smartlink remote solution:

👉 There is no need to make a large one-time investment in multi-brand OEM tools.

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2️⃣ No Risk of Account Bans or Permission Issues

Many diagnostic systems require:

• Official accounts
• Regional authorization
• Long-term login permissions

Once the account is restricted or banned, the device is basically useless.

With the remote solution:

👉 All accounts and systems are operated on the China side.

The local repair shop only needs to connect the hardware, with no account risk at all.

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3️⃣ Lower Overall Cost, More Suitable for Small-Scale Business

For small and medium repair shops, the reality is:

• The number of Chinese NEVs is still limited
• It’s impossible to buy OEM tools for every brand
• But “cannot diagnose properly” problems occur frequently

The core value of the Smartlink remote solution is:

Using lower cost to obtain higher-level diagnostic capability.

What Problem Does This Solution Really Solve?

It does not simply solve the question of “whether you have a diagnostic tool”, but three core problems:

1. Can you truly read Chinese NEV system-level data?
2. Can you accurately identify the problem, instead of guessing?
3. Can small repair shops also have OEM-level diagnostic capability?

In essence, one sentence sums it up:

It’s not about the equipment being overseas — it’s about the technology being in China.

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Conclusion

The technical core of Chinese new energy vehicles is still in China.

What truly solves problems is never just buying another overseas diagnostic tool, but:

Bringing China OEM-level diagnostic capability directly to overseas vehicles.

Through Smartlink China Version + remote Chinese engineers,

we make it possible that:

BYD and Hongqi vehicles anywhere in the world

can be diagnosed the Chinese way.

For small and medium repair shops, this is a solution that is:

low investment, low risk, high capability, and fast return.