Yanhua ACDP and APPRO2 Which is Better?

 What’s the difference between Yanhua Mini ACDP2 and the APPRO2 key programmer? Which is better?

Here is the comparison:

Item	Function	Yanhua Mini ACDP2	APPRO2
License		Module and License	License
Update		Free update	No yearly subscription
System		iOS, Android and PC	WinXP, Win7, Win8, Win10, Win11 PC
Language		Engish/Chinese	English/Chinese
Mercedes	FBS3 IMMO	–	Yes, EIS/ESL function, password calculation (no token), FBS3 key programming
	Benz mileage correction	HU6/HU7 clusters	Yes
	Disable FBS4 key	–	Yes
	DME/ISM renew	Yes	Yes
	HU6 cluster mileage correction	Yes with module 37	Yes with MB software
	HU7 cluster mileage correction	Yes with module 39	–
BMW	CAS1 CAS2 CAS3 CAS4 IMMO & Mileage	Yes	Yes
	CAS4/CAS4+ OBD IMMO	Yes	Yes
	BMW FEM/BDC IMMO & Mileage	Yes	Yes
	BMW BDC F series IMMO OBD	Yes	Yes
	BMW BDC2 IMMO	Yes, add key and all keys lost	Yes, add key
	Read ECU/DME ISN	Yes	Yes
	BMW BDC2 mileage	–	Yes
	BMW 8HP F/G  chassis Gearbox	Yes	–
	6HP F chassis Gearbox	Yes	Yes
	BMW E chassis 6HP renew	Yes with module 17	–
	BMW FRM	Yes	–
VAG	Audi BCM2 Locked BCM2	Yes, with solder free BCM2 interface board	Yes with solder free adapters
	IMMO3.5, IMMO5 and IMMO5 key programming	–	Yes
	MQB Locked NEC35XX IMMO	Yes with module 33 & 34	Yes
	MQB 5A/5C/5D mileage	Yes	Yes
Porsche	2010+ 2M25J / 5M48H / 1L15Y key programming	Yes	Yes
	Porsche 12V lithium battery repair	Yes	–
Land rover Jaguar	-2018 IMMO	Yes	Yes
	2018- IMMO	Yes	Yes
Volvo	2016- CEM IMMO	Yes	Yes
	2022- CEM IMMO	Yes	Yes
GM	Buick 2016–2023 BCM NEC3558 mileage correction	Yes	Yes
Toyota	2021-2024 R7F7014xx RH850 mileage	Yes	Yes
Remote Renew	Renew/unlock remote	Yes	Yes
ECU		Read some BMW ECUs	Read some ECUs for BMW, VAG, Citroen, Dodge, Ford, JLR, Benz, Opel, Porsche, Fiat etc via OBD, bench or boot mode.
Gearbox		VAG gearbox clone MPS6 gearbox clone SH725XX Gearbox clone VAG gearbox mileage correction GM 6T/6L gearbox clone ZF 9HP gearbox clone	BMW F series 6HP renew, clone Benz VGS2-FDCT and VGS-FCVT cloning

In sum:

• Yanhua ACDP and APPRO2 have similar functions, but they are different tools.
• APPRO2 is focus on VAG, BMW and Mercedes Benz key programming. ACDP cannot do Benz FBS3 IMMO. It also has less VAG coverage than ACDP.
• ACDP can do BDC2 all keys lost, 8HP gearbox and FRM, APPRO2 cannot. APPRO2 can do BDC2 mileage reset, ACDP does not.
• They both program 2015-2018/2018- JLR, new and old Volvo CEM, Porsche 2010+ BCM keys
• They both correct mileage for 2021- Toyota R7F7014xx and Buick BCM NEC3558.
• ACDP has more coverage for gearbox cloning.
• APPRO2 has a bonus feature to read some ECUs for many brands via OBD, bench or boot mode.

How to Set up Topdon Rlink J2534 for GM Techline Connect?

GM Techline Connect is General Motors' official diagnostic and programming software used for flashing modules, performing updates, and configuring vehicle systems.  In this guide, we walk you through how to install the GM driver and connect the Topdon RLink X7, Rlink Lite and RLink J2534 to GM Techline Connect software.

 

Tools & Prerequisites

Hardware Required

• Topdon RLink Lite, Rlink X7 or RLink J2534

• Windows PC (Win10 and Win11 with admin privileges)

Software Required

• RLink Suite Software (for device management)

• GM Techline Connect (subscription-based)

• Latest Drivers (GM-specific J2534 drivers)

 

Step-by-Step Connection Guide

Step 1: Install & Update RLink Suite

1. Download and install the latest RLink Suite from Topdon’s official website.

2. Connect the RLink device to your PC via USB and to the vehicle’s OBD-II port.

3. Open RLink Suite and go to:

   • "My Device" (top-left) - Check firmware version.

   • Update firmware if needed.

Step 2: Install J2534 Driver

1. Navigate to "Driver Management" (center tab).

2. Remove unnecessary drivers (e.g., Chrysler if working on GM). One system only accepts 1 software driver. 

3. Install the GM-specific J2534 driver:

   • Go to "Driver Download" (bottom tab).

   • Select and install the GM driver.

   • Verify installation under "Driver Info".

     Check your Rlink Suite and make sure you have ONLY the GM drivers installed.

Step 3: Launch GM Techline Connect

1. Run your web browser as Administrator (Right click on the browser icon and run the browser as an administrator. This ensures GM software can conduct necessary updates.).

2. Log in to GM’s Service Information Website.

3. Purchase a Techline Connect license (if not already available).

4. Launch Techline Connect (TLC) with admin rights (toggle "Run as Administrator"). Once you login to the GM portal, you will then luanch the software again with admin privileges.

Step 4: Check for Software Updates

Once TLC launches, it will automatically check for updates.

Ensure SPS2 (Service Programming System 2) is fully updated.

​​​​​​Once updates are complete, you should get this screen.

Step 5: Connect RLink to Techline Connect

Close Vehicle Selection windows for now.

You can attempt automatic configuration by clicking:
1). Auto Detect Tool
2). Auto Detect VIN
​​​​​​​

Select J2534 adapter

• Click "Auto Detect Tool" to manually search for the RLink.
• Alternatively, manually select J2534 under "Reprogram" mode.

Select "RLink" from the device list and click "Sumbit".

You should receive a window like this showing the list of possible devices to connect.

Select the Rlink, then click continue.

Step 6: Verify Connection & Begin Programming

Assuming the connection is successful, we should be back on this screen.

Once connected, the top-right corner should display:

• "Diagnostic Tool Ready – J2534".
• Auto-detect VIN (if needed) or proceed with module programming.

Troubleshooting Common Issues

1. RLink Not Detected?

• Ensure USB driver are installed correctly.

• Try a different USB port (preferably USB 2.0).

• Restart the PC and reconnect the device.

2. Techline Connect Fails to Update?

• Run the browser and TLC as Administrator.

• Check firewall/antivirus settings (may block updates).

3. Programming Errors?

• Ensure battery voltage is stable (use a charger).

• Verify OBD-II connection is secure.

Topdon Rlink X7 vs Vxdiag VCX SE vs Eucleia T6 Pro

Topdon Rlink X7, VXDIAG VCX SE and Eucleia T6 Pro which is a better J2534 passthru device for OEM online programming?

Check the comparison below:

1. Software and Driver Support

Each of these devices operates on different for software and driver support platforms. The Topdon Relink uses the Relink platform, offering user-friendly software management. The Vxdiag VCX SE uses VX Manager for its software needs, while the Eucleia T6 Pro runs on the Eucleia platform. Understanding the software ecosystem of these devices is essential for seamless operation and updates.

2. Porsche Diagnostics and Programming

All 3 devices support diagnostics and programming for Porsche models from 2002 to the present. Both Topdon Relink and Vxdiag VCX SE are compatible with PWE 3 and PWE 4 engineering modes, while the Eucleia T6 Pro supports PWE 3 but does not accommodate PWE 2. This makes the Topdon and Vxdiag options more versatile for those working with a range of Porsche vehicles.

3. Mercedes-Benz Support

For Mercedes-Benz vehicles manufactured from 1996 onwards, all 3 devices provide comprehensive support. They use xentry for diagnostics and programming, and they all support DTS Monaco for 2010 and later models, along with VEDIAMO for models from 2004 to 2010. Notably, the Topdon Relink and Eucleia T6 Pro specifically support the Mercedes-Benz W447 model with Xentry 24.6.

4. BMW Diagnostics

When it comes to BMW, all devices support ISDA for diagnostics from 1996 or 2004 to the present. The latest ISDA 4.48 version is supported by Topdon Rlink and Eucleia T6 Pro. Furthermore, all 3 devices offer ESYS, IMAP, and WIN KFB programming for BMW models from 2004 onward, providing a solid solution for BMW specialists.

5. General Motors (GM) Support

All 3 devices provide robust support for General Motors (GM) vehicles, covering diagnostics from 2000 to 2012 Tech 2 Win, and GDS2 for models manufactured after 2012. Furthermore, SPS programming is available by all 3 devices, ensuring comprehensive support for GM technicians.

6. Volkswagen, Audi, SEAT, and Skoda Diagnostics

The compatibility of all devices with ODIS-E and ODS-S allows them to handle VAG models from 2001 to the present Notably, both Topdon Relink and Eucleia T6 Pro support CAN FD/DoIP protocols, while the Vxdiag VCX SE is limited to DoIP, making the former two devices better suited for modern VAG diagnostics.

7. Ford and Mazda

For Ford and Mazda vehicles, all devices cater to diagnostics from 2005 using IDS, FDRS, and FJDS. This compatibility ensures mechanics have access to essential diagnostics for these popular brands.

8. Jaguar and Land Rover

All 3 devices are compatible with Jaguar and Land Rover models, covering diagnostics from 2007 to 2016 with SDD, and from 2017 to 2022 with Pathfinder providing full diagnostic and programming support.

9. Volvo

All 3 devices offer Vita support for Volvo models between 2001 and 2014 so that technicians can effectively diagnose and program these vehicles.

10. Toyota, Honda, and Subaru Support

Diagnostics for Toyota vehicles are supported by all devices using TechStream for models from 2005 onwards. Honda diagnostics are similarly supported through HDS/IDS on all devices for the same range of years. For Subaru, Topdon Relink and Vxdiag VCX support SSM3 and SSM4 for newer models while Eucleia T6 Pro does not SSM3, which may be a limiting factor for Subaru specialists.

11. Nissan, Renault, and PSA ( Citroen and Peugeot ) Support

Nissan diagnostics via Consult 3 Plus are offered by both Topdon Rlink and Vxdiag VCX, while Eucleia T6 Pro does not provide support. Renault diagnostics through clip are available exclusively through Vxdiag VCX, and PSA (Peugeot and Citroen) diagnostics are supported by Eucleia T6 Pro, broadening the brand coverage for users of these devices.

12. Chrysler, Dodge, and Jeep Support

VXDIAG and Eucleia T6 Pro do not support Chrylser license. Topdon Rlink does.It supports Chrysler, Dodge, and Jeep vehicles, covering models from 2005 to 2022. This compatibility allows mechanics to perform various functions, including reading clearing fault codes, accessing live data, and performing special functions, making them suitable for a wide range of repairs and troubleshooting.

13. Aditional Brand Support

GM China diagnostics with RDS/SCS are supported by Topdon Rlink and Eucleia T6 Pro. 

Conclusion

Each device comes equipped with unique features that can enhance the diagnostic experience. For instance, Topdon Rlink stands out with broader compatibility and additional support for modern Diagnostics including CAN-FD and multiple advanced protocols it's ideal for users requiring extensive coverage across Brands. Vxdiag VCX is versatile but lacks CAN-FD support making it slightly less capable for certain modern vehicles. Eucleia T6 Pro offers solid support but falls short on some specific brand Diagnostics like PWE 2 for Porsche or Nissan consult compatibility.

 

if you require a device with extensive coverage across Brands and support for advanced Diagnostics like an FD, TOPTON Rink may be the better choice, for users focused on specific brands, Vxdiag or Eucleia T6 Pro could also suffice depending on the use case. in sum, rink X7 and Eucleia T6 Pro both support KFD and DOIP protocols Vxdiag VCX SE only DOIP. if you need CAN FD, you need to get a new Vxdiag CAN FD device. Some licenses are not ready for the CAN FD device yet, all these are based on third-party drivers. all can be used as j2534 pass-through for OEM online programming.

 

Eucleia is not compatible with the Subaru Nissan PSA Renault license. Relink is not compatible with PSA, Renault, SSM3, and Pathfinder PWEII software. Vxdiag does support this software. Rink X7 and Vxdiag VCX SE allow adding more software licenses to the unit. These are affordable J2534 devices comparing Mongoose Pro adapters. it depends on your needs. some users reported that the Vxdiag FD is faster and easier to set up than relink.

 

All four devices have active online communities technicians discuss troubleshooting tips, software updates, and shared experiences, which can be beneficial for looking to maximize their device's potential.

 

In conclusion, selecting the automotive diagnostic device depends on various factors, including the specific brands and models you work with, your, and the features that are most important to your needs. Topdon Relink, Vxdiag VCX SE, and Eucleia T6 Pro offer a wide range of functionalities and compatibility with numerous, making them reliable choices for specialists in repairs. Whether you are a professional in a busy shop or a DIY enthusiast, understanding the strengths and weaknesses of each device will help make an informed decision and ensure you have right to effectively diagnose and repair vehicles.

Which Tool to Clone VAG Simos 12.2 ECU?

 Question: It’s a 2014 Volkswagen Jetta (Simos 12.2) that needs to do Immo adaptation (ECM Swap). What tool to clone this ECU? Will OBDSTAR DC706 or FC200 do it? Or what the best way to clone this ecu without the Car.

Here is the clue.

You can’t full clone this ecu. It has OTP. There are OTP data in those.

You need to read it and use a calculator to sync data from original to donor.

Most tools are not capable to do it because of the OTP restrictions.

This ECU can be full read by either flex or autotuner. If you have none of those tools, then ODIS is your go to tool. DC706 and FC200 cannot clone it.

Need to read eeprom and flash and send to 3rd guy to extract them (transfer immo data) for you, or even better, do a full read (flash and eeprom) from original and donor ecu and send them to some one to do it for you, this is a real hard ecu to adapt. Same as simos10.10, simos 12.1 ecu, its the only way.

Make sure original and donor have the same software.
If the software is different, you will have powerclass mismatch and odis won’t program it.

Program and Cut Lexus GX460 2021 Smart Key Tips

 Programming a new key for a Lexus GX460, particularly the 2021 model, can be a straightforward process on the surface, but it comes with its share of challenges. This article explores the nuances of key programming for this vehicle, based on real-world experience, and highlights key insights for technicians and enthusiasts alike.

 

 

This car is extremely sensitive to the type of keys. It is highly likely that a Chinese key simply cannot be programmed. I tested all possible Xhorse and Autel firmware versions – there was no result… However, only the key generated via Lonsdor worked (here generate Lonsdor key with KW100 key tool).
After programming, a problem with synchronization (sync) may occur…
Also in the video I will tell you how to correctly cut an emergency key for this model and share other important nuances.

 

The Challenge of Key Programming

 

The Lexus GX460 is, in theory, an “elementary” vehicle to program keys for compared to other Toyota or Lexus models. Unlike some vehicles that require rolling codes, additional cables, or complex procedures, the GX460’s key programming process is relatively simple. Tools like Autel IM608 or AutoproAP can handle the task without needing backups or intricate setups. However, the vehicle is notoriously “finicky” when it comes to accepting keys, especially non-original ones. The primary issue lies with aftermarket keys, such as those sourced from platforms like AliExpress or other non-OEM suppliers. These keys often fail to bind properly to the vehicle, even after multiple attempts with various programming tools and firmware. This was evident in a technician’s experience, who made three trips to program a key for a 2021 Lexus GX460. Initial attempts with aftermarket keys and firmware from tools like Xhorse and Autel were unsuccessful, highlighting the vehicle’s sensitivity to key compatibility.

Troubleshooting and Solutions

 

The technician initially arrived with an incorrect key, a rare but not unheard-of mistake. The Lexus GX460 uses specific FCC IDs, and ensuring the correct one is critical. On the second visit, even with the right key, programming failed due to firmware incompatibilities. Tools like Xhorse and Autel were tested with various firmware versions, but none successfully paired the aftermarket key. The technician hypothesized that an original Toyota or Lexus key might be necessary, though the client was reluctant to pay for a pricier OEM option.Interestingly, the programming process itself is not the hurdle. The GX460 does not require rolling codes or three-step cable connections, making it less complex than other Toyota or Lexus models. The technician used AutoproAP and selected an alternative model (since the GX460 wasn’t listed) to complete the programming. The process took about 40 seconds, and the key was successfully added. However, a recurring issue emerged: the buttons on the key (e.g., for locking/unlocking) often failed to work post-programming.

 

Why Aftermarket Firmware Fails

The technician tested multiple firmware versions (including Xhorse and Autel), but none worked. Possible reasons:

• Frequency mismatches in non-OEM keys.

• Software limitations in generic tools (AutoProPad, Autel, etc.).

• The vehicle’s ECU may block unverified keys.

Solution: If possible, use OEM keys or keys from trusted suppliers. For programmers, Toyota/Lexus-specific tools (e.g., Techstream) are more reliable.

Addressing Button Malfunction

 

A lesser-known but critical issue with the GX460 (and some other Toyota/Lexus models) is that the key’s buttons may stop functioning after programming. This is a rare phenomenon but not insurmountable. The solution involves accessing the proximity function in the programming tool to resynchronize the key. By entering the programming menu, selecting the synchronization option, and toggling the ignition with any key, the buttons can be restored to full functionality. This step is often overlooked, as it’s not explicitly listed in tools like AutoproAP, but it’s a vital workaround for technicians.

Additional Considerations: Key Cutting

Beyond programming, cutting the physical key blade for the Lexus GX460 presents its own challenges. 

The vehicle’s key slot is sensitive to blade thickness, and standard blades may not work effectively. To address this, the technician used a creative workaround: stacking thin plastic shims (similar in thickness to a business card) to artificially increase the blade’s thickness. Typically, two or three shims are sufficient to ensure the key engages properly in the lock. However, care must be taken when using Xhorse Dolphin XP005 cutting machine, as excessive thickness can cause the key to dislodge during the process. The technician emphasized that while specialized tools or adapters might exist, this DIY solution is effective and cost-efficient.

Key Takeaways

 

The Lexus GX460, while simple to program in theory, is extremely particular about key compatibility. Aftermarket keys often fail to bind, and technicians may need to resort to OEM keys for guaranteed success. The button malfunction issue, though rare, can be resolved through proper resynchronization. Additionally, key cutting requires attention to blade thickness, with shims offering a practical solution.For those working on this vehicle, the process underscores the importance of preparation, patience, and adaptability. Non-OEM keys may save costs upfront but can lead to multiple failed attempts, as seen in this case. Technicians should also be aware of the synchronization step for button functionality and the nuances of key cutting to ensure a fully functional key.This experience serves as a reminder that even seemingly straightforward tasks can hide unexpected complexities. For anyone facing similar issues, double-checking FCC IDs, using reliable tools like Autel or AutoproAP, and being prepared for firmware challenges can make all the difference.Pro Tip: If you’re working on a Lexus GX460 or similar model, always test the key’s buttons post-programming and have shims ready for key cutting. 

How to Get APPRO2 Check Code Online?

 When performing the BMW F/G series mileage correction function using the APPRO2 programmer, it will request a check code.

In the past, users had to send the random code to us to get the check code.

The time difference makes this inconvenient.

 

Now APPRO2 technician modifies the online server. Users will obtain the check code online directly.

 

How to get the check code automatically?

Update Appro2 software to latest version.

This function requires network connection.  The software will calculate the check code from APP2 server.

NOTE:

The server has a daily limit of 5 check code calculations. Additional requests must be calculated manually.

How to Unlock Mercedes EMS71 ECU with AutoTuner?

 Flex, bflash, CMD and many other tools don’t have bench protocol for the Mercedes Continental EMS71 ECU. Autotuner now released an unlock service for the MB EMS71 ECU.

 

The Mercedes-Benz EMS71 is an Engine Control Unit (ECU) (also known as Engine Control Module) manufactured by Siemens/Continental. It’s primarily found in newer, smaller displacement Mercedes-Benz models, specifically those with the M282 engine, such as the A-Class (W177), B-Class (W247), CLA-Class (C118), GLA-Class (H247), and GLB-Class (X247). The EMS71 manages various engine parameters like fuel injection, ignition timing, and air-fuel mixture to ensure optimal performance, efficiency, and emissions.

 

NEW AUTOTUNER RELEASE
Great news for Mercedes owners! AT Remote Unlock service now officially supports the Continental EMS71 ECU,​ opening up new possibilities for Mercedes vehicles powered by the 1.3T engine.

Once unlocked, you can read and write flawlessly in OBD mode, providing the reliable and efficient experience you’ve grown to trust with Autotuner protocols.

To ensure a smooth process, we have outlined the simple steps below.

How It Works:
Purchase the Service: Visit Autotuner online shop to purchase the Remote Unlock service.
Prepare Your ECU: Carefully open the ECU casing on both sides before sending it to Autotuner.
Required Tools: Heat Gun / Chisel / Tri-lobe S/Driver Set / Torx S/Driver Set / Fastback Compact Flip
Ship It to AT: They will provide you with a shipping label for your package, which includes a scheduled DHL pickup at no extra cost.
Autotuner Unlock It: Upon arrival, their expert team will unlock your ECU.
Ready for Action: They will promptly ship the unlocked ECU back to you, ready for immediate use.

 

NOTE:

To use this service, you’ll need to ship your ECU to Autotuner’s headquarters for unlocking.
Once the unlock is completed, they will return the ECU to you, ready for OBD read/write operations.

The ECU must be fully opened on both sides, with the circuit board completely separated from the casing. They will not process any closed or partially opened ECUs.

Key Features:
Type: Engine Control Unit (ECU).
Readout: OBD VR.
MCU: TC277.
Write time once unlocked: 1min.
Checksum correction.
Remote unlock needed.