Clear BNZ Engine Code | ANCEL DS3000 Can Easily Do It Without Professional Auto Mechanics!

If you drive a Mercedes-Benz and encounter a check engine light, it can be a cause for concern. While the light can indicate various issues, from minor to severe, knowing how to address and clear the code can save you time and worry.

I found that the most effective way to solve this problem is to use an automotive scanner. This tool allows you to quickly diagnose the issue and clear the code, ensuring your vehicle runs smoothly without unnecessary trips to the mechanic.

Use an OBD2 Scanner

One of the most reliable methods to clear the check engine light is by using an OBD2 scanner. This device communicates with your vehicle’s onboard computer to read and clear diagnostic codes. Here’s a step-by-step process:

  1. Plug in the ANCEL DS300: Locate the OBD2 port, typically under the dashboard. Plug in the scanner.
  2. Turn on the Ignition: Switch the ignition to the “on” position without starting the engine.
  3. Read the Codes: Follow the scanner’s instructions to read the diagnostic trouble codes (DTCs).
  4. Clear the Codes: After noting down the codes, select the option to clear or erase them. This should reset the check engine light.

Using an OBD2 scanner is effective because it directly interacts with the car’s electronic control unit (ECU) to clear the fault codes, ensuring that the problem has been addressed or acknowledged.

To learn how to clear the code for universal cars, click here to view more.


DS3000 Diagnostic Tool

I’ve found that having a reliable diagnostic tool like the DS3000 can be incredibly helpful. The DS3000 is a high-end car diagnostic DIY product developed based on the Android 10.0 system. It features intelligent OBD2 code card reading functions and supports standard OBD II and EOBD protocols post-1996. Equipped with professional vehicle diagnostic software, it allows you to read version numbers, fault codes, clear fault codes, read data streams, encode, and perform action testing. With 28 kinds of car maintenance functions, it is a powerful and cost-effective intelligent car diagnostic tool.

In my experience, the DS300 is not only comprehensive in its functionality but also user-friendly. The 7.0″ touchscreen is clear and responsive, making it easy to navigate through various diagnostic options. The quick physical button provides an efficient way to perform tasks without getting bogged down by touch inputs. Running on Android 10.0 OS, the tool is modern and supports various apps and updates, ensuring it remains relevant over time.

Features of the DS300:

  • 7.0″ Touchscreen: For clear and responsive interaction.
  • Quick Physical Button: For fast and easy operation.
  • Android 10.0 OS: Ensuring modern software capabilities.
  • VCI Box: For wireless or lined USB connection.
  • 6300mAh Battery: Built-in large capacity battery for longer-lasting use.
  • Equipped with Holder: Can be hung or stood to free your hands.
  • Legible and Responsive Physical Button: For efficient operation.
  • High-end Processor: Ensuring fast operation.
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Ways to Reset check engine light

Disconnect the Battery

Another common method to reset the check engine light is by disconnecting the car battery. This method performs a hard reset of the ECU by erasing its memory. Follow these steps carefully:

  1. Turn Off the Ignition: Ensure the car is off and the key is removed from the ignition.
  2. Disconnect the Negative Terminal: Use a wrench to disconnect the negative battery cable (the black one). Be cautious not to let it touch any metal surfaces.
  3. Wait: Leave the battery disconnected for about 15-20 minutes. This time allows the ECU to reset.
  4. Reconnect the Battery: Reattach the negative cable and tighten it.
  5. Start the Engine: Turn on the ignition and start the engine. The check engine light should be off if the underlying issue has been resolved

Continue Driving

Sometimes, the check engine light will turn off on its own if the issue was minor and has been resolved. For example, a loose gas cap can trigger the light. If tightened, the light may reset after driving a few miles.

·  Address Minor Issues: Check for common minor issues such as a loose gas cap and fix them.

·  Drive Normally: Continue driving as usual. The ECU runs continuous diagnostics, and if it detects the issue is resolved, it will turn off the check engine light.

·  Wait for Reset: It may take a few days to a few weeks or about 30 miles of driving for the light to reset on its own.


If you encounter problems with your Mercedes-Benz check engine light, just use the ANCLE DS300. It can save you a lot of money! With its comprehensive features and user-friendly design, the DS300 makes diagnosing and fixing car issues a breeze

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