W205 facelift unlock EZS

[Handed3219]

I've been attempting to code Apple CarPlay in my 2021 W205 facelift model, but I'm encountering an issue with Monaco software: I can't make the change permanent due to insufficient privileges caused by the diagnostic firewall.

To resolve this, I need to unlock the Electronic Ignition Switch (EZS). However, I'm struggling to figure out how to unlock it.

The control module in question is EIS222, but within the diagnostic tool, I don't see a generic job that provides security access like I would for an EZS167.

In my search, I've come across various suggestions, such as using different SMR-D files, but I've tried several without success.

How can I unlock the EZS in this situation?

 

[wojciech300]

Hi, for sure W205 mopf have a EZS213 not 222 or 167

 

[Handed3219]

Hmm when I connect the car first to Xentry I see the EIS222 as EZS. What are other ways to confirm the correct EZS component?

 

[wojciech300]

Print quick test from Xentry and post it here.

 

[myztic]

W205 mopf has EZS213 and might have diag firewall, so what you need to do is to find diagnostic procedure security unlock 3B to be allowed to code. Though other control units might require seed/key calculation.

 

[Handed3219]

Thanks that did the trick, the changes are now persistent.

 

[ADS74]

You know that you can activate Carplay from the hidden menu of your car radio without Xentry.

 

[14boo]

You know that you can activate Carplay from the hidden menu of your car radio without Xentry.

Could you explain please?

 

[Fotom]

You know that you can activate Carplay from the hidden menu of your car radio without Xentry.

How that? I have not seen that before.

 

[GeorgiDimitrov]

W205 mopf has EZS213 and might have diag firewall, so what you need to do is to find diagnostic procedure security unlock 3B to be allowed to code. Though other control units might require seed/key calculation.

I have a W205 2021.
When performing security unlock 3B, you must send the key very quickly (27 3C). If there is a delay, the key will not be accepted.
I have not seen such problems before 2021.
I am using OBD2 Y cable.
Use Xentry to unlock EZS and quickly continue to DTS Monaco
Hope this helps you.