Coding Mercedes-Benz Mirror Lights MERCEDES-BENZ
30.12.22
06.08.25
- @Jack.Taylor06.08.2025 12:33MemberTo activate the welcoming light on the rearview mirror (controlled via the ZGW module) on a Mercedes-Benz, the process generally involves coding the ZGW module using Vediamo software, as Xentry and DAS do not support coding this particular module.
Here’s a summary of the steps based on relevant procedures:
1. Initial Vehicle Settings:
- Turn on the Surround lighting in the vehicle menu.
- Note that only the turn signal light may activate initially when unlocking the car, but the welcoming light won’t come on until coding.
2. Device and Software Requirements:
- Use a diagnostic interface such as VXDIAG VCX SE, MB SD C4 Plus, or Super MB Pro M6.
- Vediamo software is required for coding the ZGW module because Xentry and DAS cannot code ZGW.
3. Identify the Correct CBF File for ZGW:
- Use Xentry Diagnosis to navigate: Select your model (e.g., E-Class W212) > Control Unit > Body > ZGW.
- Check encoding data; note the ZGW code (e.g., N93).
- Identify the needed CBF file, often named CGW231 for ZGW.
4. Coding via Vediamo:
- Open Vediamo Start Center and go to “Ecoute.”
- In “System Selection,” select “Systems based on DIOGENES data (.cbf files)” and load CGW231.
- Navigate to “Variant Coding,” then select the coding option related to the welcoming light, for example, `VCD_02_global_variant_coding >> Einstiegsleuchten >> available >> ECU-Coding`.
- Confirm changes by selecting “Continue” and “Close.”
- Unfold CGW231 and under “Function,” perform a “FN_HardReset” to apply the coding.
- Disconnect the ECU and exit.
5. Verification:
- When unlocking the vehicle doors, both the turn signal light flashes and the welcoming light at the bottom should illuminate, confirming successful activation.
This procedure allows you to add or enable welcoming lighting functions not available by default or through standard coding tools. - @Jack.Taylor06.08.2025 12:33MemberIf you are performing this yourself, ensure you have:
- Proper diagnostic tools (hardware and software),
- Full backup of your current vehicle coding,
- Knowledge of safety and coding risks.
For more details, the referenced guide from autodoc.co.uk provides a full tutorial, and Vediamo usage videos or forums can help with specific interface navigation.
This article is about to bring you how to activate welcoming light on
the rearview mirror (code ZGW module) on Mercedes-Benz via Xentry and Vediamo.
First, we need to adjust some settings in Mercedes-Benz:
Turn on Surround lighting on menu.
Now, the turn signal light turns on but the welcoming light does not when we unlock the doors.
So, what we gonna do is code on PC so that they both would light as we unlock it.
The device that connects Mercedes-Benz to PC could be VXDIAG VCX SE,
MB SD C4 Plus, Super MB Pro M6…Different coverage, you can choose by
your needs.
Note: Only Vediamo can code the module called ZGW, Xentry and DAS don’t support.
The first thing is that we need to figure out a CBF file for the ZGW unit.
So, how to find the CBF file we need for ZGW module?
Here we’ll show you through Xentry Diagnosis.
Select our model – E(212)>>Control Unit>>Body>>ZGW
Encoding>>Configuration>>Encoding>>Displaying encoding data
Here “Code 500 (Folding outer mirror) – not available”
Go to Topology, select ZGW’s code – N93.
Here we know we need the CBF file (CGW231) for ZGW.
Now we need to encode it through Vediamo.
Open up Vediamo Start Center.
Go to “Ecoute”.
On “System Selection”,
Check “Systems based on DIOGENES data (.cbf files)” and select “CGW231” CBF file.
Go to “Variant Coding”, select
VCD_02_global_variant_coding>>Einstiegsleuchten>>available>>ЕCU-Coding
Select “Continue” and “Close”.
Unfold “CGW231” and “Function”.
Click on “FN_HardReset”.
Finally, disconnect ECU CGW231 and exit.
Test: when we unlock the car, the turn signal light flashes and the welcoming light on the bottom is on. So cool.
Alright, you can also add lights to your Mercedes.