Many customers are complaining about the Mercedes start engine warning on the dashboard as follows: “Eng. start not possible in 572 km”. This is a warning error that the car cannot start the engine, if not handled immediately, it will cause serious consequences. As a technician, you must have encountered this problem many times on Mercedes models. So how do proceed to identify errors and fix them most effectively? Let’s explore with Eurocartool in this article!
Identify warning error Eng. start not possible
The warning error Eng. start not possible is an error displayed on the dashboard that the car cannot start but in the engine control box N/9 OM642 CDI does not report an error.
Surely many technicians have encountered this error on Mercedes models such as W204, W906, W204, W156, W164, W166, W212, W213, W221, W222, W253, W156, W164, W205, W222, W251, W166, W117,… In this article, we will show how to receive error reports and guide how to repair samples on model W166.
- The error displayed on Taplo

- The error displayed on Xentry software


Once the error has been identified, what do you need to prepare to start repairing? What are the processing steps? Find out below!
Equipment to prepare to fix warning Mercedes start engine
You need to prepare the following equipment to ensure the repair process takes place most effectively.
- Vediamo software or DTS Monaco: Software for engineers to program and code offline when replacing a control box on a vehicle; Read, clear error, reset control box; Change the previous control box setting value parameter.
See more: DTS Monaco
See more: Vediamo software
- C4 device (required): equipment to support in-depth diagnostics of vehicle systems

See more: C4 Doip
How to conduct error correction most effectively? Let’s see the step-by-step instructions to fix the warning display error right below!
Instructions for the most detailed error repair steps
Once you have fully prepared the necessary equipment for the warning Mercedes start engine repair process, here are the steps to be carried out in detail by Eurocartool and easiest to understand:
Step 1: Make sure your car is parked and fixed in a place where the terrain is flat and easiest for repair.
Step 2: Connect the software and prepared equipment to the vehicle. Make sure the devices are connected carefully and in good working order.
Step 3: Use Xentry software to control box N118/5 into adaptations and reset all functions in the Teach-in section

Step 4: Connect control box CR61 CBF in Vediamo and select DJ-Adblue concernszenario_reset.

Step 5: Finish and check.
Here is a detailed video tutorial: Video
Get more support information from Eurocartool
If you are facing an error with the Mercedes engine start, the above article has provided you with detailed information on how to get the error and repair it. However, in the process of implementation, problems may arise, especially since Mercedes cars are constantly upgraded with features, so there will inevitably be difficulties in the process of learning and repairing.
To avoid unexpected incidents, please contact us for detailed instructions.
At Eurocartool, there is always a team of technicians and customer care ready to assist you 24/7. So, if you have any questions or need any advice, please contact us immediately for support as quickly as possible!
Please contact us via:
Email: sales@eurocartool.com
WhatsApp: +84388951999
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