DTS Monaco — Daimler Diagnostic Engineering Suite

DTS Monaco - Mercedes Benz OBD2 Diagnostic & Programming 9.02

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DTS Monaco — Daimler Diagnostic Engineering Suite
DTS Monaco - Mercedes Benz OBD2 Diagnostic & Programming 9.02
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aj310 said:
sorry 2023 eqe Mercedes
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For a 2023 EQE (W295), the files you need are likely already on your laptop IF you have a recent version of Xentry (e.g., 09/2023 or newer).

However, it is important to distinguish between the two types of files:

1. Diagnostic Files (SMR-D) - YOU NEED THIS
To clear the crash codes (P2E3262 / P1C8000) and unlock the charger, you need the SMR-D file to load into DTS Monaco. You do not need to flash the unit.

Check this folder on your drive:
C:\ProgramData\Mercedes-Benz\Xentry\Kontexte\ODXProjekte\PKW_COMMON\dbr
(Sometimes it is in C:\Program Files (x86)\Mercedes-Benz\Xentry\Kontexte\ODXProjekte\PKW_COMMON\dbr)

Look for these specific files for the W295:
  • Charger (OBC): OBC223.smr-d (The EQE shares the charger with the W223 S-Class).
  • Battery (BMS): BMS_GEN5.smr-d or SG_BMS.smr-d.

2. Flash Files (SMR-F) - YOU LIKELY DO NOT NEED THIS
If you are trying to "Flash" the module to fix the crash code, it will not work. The crash status is stored in the memory (EEPROM), not the firmware. Flashing a locked module will usually fail or leave the code active.

If you still need the flash files for a 2023 model, they are stored here:
C:\ProgramData\Mercedes-Benz\Xentry\Flash
C:\Program Files (x86)\Mercedes-Benz\SDFlash\Release

If the files are missing:
Since the car is a 2023 model, if your Xentry version is older (e.g., 2021 or 2022), you will not have these files. You must download a newer SDFlash database or install Xentry 12/2023 or 03/2024.

Critical Warning for 2023 EQE:
The W295 uses ZenZefi certificates for security. Even if you have the files, DTS Monaco might give you a "Security Access Denied" or "Negative Response" when you try to unlock the crash data because you don't have the online certificate.
  • If you get "Access Denied" on Security Level 37, you will need a Seed/Key Calculator specifically for the W295/W223 architecture, or a paid remote coding service to unlock it.
 
aj310 said:
Can I program with 8.16 Monaco or do I need the new one
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Yes, you can use DTS Monaco 8.16 for the 2023 EQE (W295), but there is a major catch regarding Security.

Here is the technical breakdown:

1. Communication & Protocol (Works)
DTS Monaco 8.16 fully supports the SMR-D files and the DoIP (Ethernet) protocol used by the W295. It can load the projects, read codes, and send commands perfectly fine. You do not strictly "need" DTS 9.02 just for the connection.

2. The Problem: Security Access (ZenZefi)
The 2023 EQE uses a new security architecture called ZenZefi (Certificate-based security) for critical functions like:
  • Unlocking the ECU for Coding (Variant Coding)
  • Reseting Crash Data (Level 37)
  • Disabling the High Voltage Lock

DTS Monaco 8.16 does not support ZenZefi natively. It relies on the old "Seed & Key" DLL method.
  • If you try to unlock Level 37 in DTS 8.16, it will ask for a Key.
  • The standard "Unlock" button will likely fail with "Negative Response 35: Invalid Key" because the internal calculator in 8.16 is too old for a 2023 car.

3. The Solution for DTS 8.16
You can still use 8.16, but you must have an external Seed/Key Calculator that supports the W295/W223 algorithms.
  • You click "Request Seed" in DTS 8.16.
  • You copy the bytes (e.g., 12 34 56 78) into the external calculator.
  • The calculator gives you the Key.
  • You manually enter the Key into DTS 8.16 and click "Send".

Summary
If you have a working Seed/Key Calculator for W295: Keep using DTS 8.16. It is more stable and easier to use than 9.02.
If you do not have a calculator: You are stuck. DTS 9.02 won't help you either unless you have valid ZenZefi certificates installed (which are hard to get offline).

Recommendation: Stick with 8.16 and find a service or tool that can calculate the key for you remotely.
 
aj310 said:
Do I need to be online I have a zen certificate
Click to expand...

No, you do not need to be online (connected to the internet).

If you have a valid ZenZefi certificate installed on your laptop, it is stored locally on your hard drive. The unlocking process happens entirely between your laptop and the car.

However, there is a critical compatibility issue:

DTS Monaco 8.16 does NOT natively support ZenZefi certificates.
If you just open DTS 8.16 and try to unlock the ECU, it will ignore your certificate and ask for a standard "Seed & Key" (which will fail).

To use your ZenZefi certificate, you have two options:

1. Use DTS Monaco 9.02: This version was built to read ZenZefi certificates automatically. It will see the certificate and unlock the ECU immediately.
2. Use a "Wrapper" for 8.16: If you must use DTS 8.16, you need a special add-on tool (often called a "ZenZefi Wrapper" or "SMR-D Patcher") that tricks the software into using the certificate. Without this extra tool, DTS 8.16 cannot see the certificate.

Summary:
  • Internet: Not required.
  • Software: You likely need to switch to DTS 9.02 to make the certificate work easily.
 
So if I upload the files I wouldn’t just be able to activate my car charging if I clear codes stoping the car from charging I need a certificate? And how exactly do I upload my specific files from my vehicle to Monaco or I’m just uploading every car that’s like mine and inputting the new software I can’t run Monaco an just tell it to scan the car
 
aj310 said:
So if I upload the files I wouldn’t just be able to activate my car charging if I clear codes stopin...
Click to expand...

You are mixing up "Flashing" (changing software) with "Coding/Reseting" (sending commands).

Here is the correction to your understanding:

1. DTS Monaco does NOT "Scan" like Xentry
DTS Monaco is an engineering tool. It does not have an "Auto Scan" button that detects your car and fixes it.
  • You must manually tell it *exactly* which ECU you are talking to.
  • You do this by loading a Project File (.smr-d) from your laptop's hard drive.
  • You are not uploading files *from* your car. You are opening a definition file on your laptop that acts as a "driver" so the software understands the car.

2. Why you cannot just "Clear Codes"
The code P2E3262 (Crash Detected) is Hard Locked.
  • If you click "Clear DTCs" right now, the ECU will ignore you. It will say "Negative Response" or the code will come back instantly.
  • The ECU is in a "Safety State." It will not accept a "Clear" command until you perform a specific Unlock Routine.

3. The Certificate is the Key
This is where the ZenZefi Certificate comes in.
  • To run the "Unlock Routine," the ECU demands a password (Security Access).
  • On the 2023 EQE, this password is extremely complex.
  • The Certificate on your laptop automatically provides this password.
  • Without the Certificate (or a Key Calculator), you cannot unlock the ECU.
  • If you cannot unlock the ECU, you cannot clear the crash code.

4. Do NOT "Input New Software" (Flash)
  • Do not try to flash/program the ECU with new files.
  • Flashing a crashed ECU often fails because it is locked. You could brick the module.
  • You only need to send the Reset Command, not change the software.

Summary of what you must do:
1. Load the File: Open DTS Monaco and load OBC223.smr-d (from your laptop's database).
2. Connect: Click "Connect" to talk to the Charger.
3. Unlock: Use your Certificate to pass "Security Access Level 37".
4. Reset: Run the "RoutineCrashReset" (this is a command, not a file upload).
5. Clear: Now you can finally click "Clear DTCs" and the car will charge.
 
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