Is it possible to add Key for Passat year 2005 with xhorse via OBD?
Some can, some you need to read ECU on bench for data. Better to clone chip and learn remote by OBD as suggested by more people, don’t risque braking the firewall plastic covers to get to the ECU (old and brittle sometimes).
Way 1:
Clone it with VVDI and remote by OBD. Easy money
Clone xhorse super chip XT27 with key tool max and add remote by OBD
Way 2:
Vvdi2 can program key for Passat 2005. Read CS & pin from ECU … get 7th CS bit from working key, generate dealer key, learn key, done.
Check adapt VW Passat key with vvdi2
2002 VW Eurovan does anybody have instruction on how to add a key (ID44 transponder) with xhorse vvdi2 vag?
Solution:
Can xhorse vvdi2 read ISN from a BMW MSD80 DME? This is a frequently asked question by users.
Yes, it can.
Here’s the guide on reading MSD80 ISN with vvdi2.
Check msd80 vvdi2 wiring diagram
set up bench connection with vvdi2 and ecu, provide 13.5V power supply
Let’s go to BMW
Go to Key Learn function- ECU/CAS ISN-MSD80
Read ECU ISN
if you don’t want to mess with bmw, you gonna wait patiently
vvdi2 bmw reads the engine ISN and VIN, read full flashing completed.
Save data.
Change MSD80 VIN requires complete flashing. If vvdi2 will read complete flashing, it can change the vin.
https://www.vvdishop.com/service/read-bmw-msd80-isn-with-xhorse-vvdi2.html
The answer is yes. Only to ensure the BMW control unit FEM is completed and dry enough, Xhorse VVDI2 is able to read FEM data after water damage. Besides, BMW key data still can be saved via VVDI2.
Following is an experiment:
This is a BMW FEM module that had been water damaged. It looks completed but dirty and wet. After cleaning and drying the circuit board, connect to VVDI2 & GODIAG FEM Test Platform.
BMW >> Key learn >> FEM/BDC Key Learn >> Get key info
There are 2 enable keys.
Currently no key is in ignition switch.
Read FEM data OK.
Insert a working key into GODIAG BMW FEM Test Platform.
Click “Get key info” again.
It tells “Key 2”.
That means the FEM is still workable for key programming.
That’s it.
Trial is successful!
https://www.vvdishop.com/service/xhorse-vvdi2-read-water-damaged-bmw-fem-data.html
Here is the tips to program 2009 VW Tiguan with all keys lost by xhorse vvdi2 in ABS service mode. The procedure can also be applied to these login type include (CDCxx+24C32, A3/TT/R8 (CDC32xx), NEC24C32, NEC24C64, NEC24C64(2012 TFT color display), NEC24C64(2013-), NEC24C64(2013 TFT color display), Audi A1, Audi Q3).
Don’t forget to SAVE ABS coding with VVDI before the process. You can restore with VVDI2 too.
This function is in the same menu of vvdi2 as eeprom update section, dash with micronas + 24C32.
All login type have similar operation for lost all keys,
backup ABS coding->read EEPROM with BDM programmer->Prepare a service EEPROM data->write service EEPROM data to cluster->Put instrument in car->select correct login type->Load
original EEPROM file->activate car OBDII communication->write EEPROM via OBDII->read immo data->save immo data->make dealer key->add key->reset instrument.
Service mode all Keys lost:
Some login type cannot read immo data while lost all working key. Login type include (CDCxx+24C32, A3/TT/R8 (CDC32xx), NEC24C32, NEC24C64, NEC24C64(2012 TFT
color display), NEC24C64(2013-), NEC24C64(2013 TFT color display), Audi A1, Audi Q3). This type can make dealer key with following steps:
1) Activate OBD communication by open dangerous light, press on the brakes for several times. Backup ABS coding, you can run backup function on bottom right corner, or enter diagnostics 03 ABS, backup abs coding
2) Find EEPROM chip from instrument, usually use 24C32 or 24C64 chip, read EEPROM dump with BDM programmer and save as original EEPROM dump
3) Enter “Service Mode”, load original EEPROM dump and prepare service EEPROM dump. Attention: DON’T overwrite the original EEPROM dump
4) Write service EEPROM dump to EEPROM chip (24C32 or 24C64)
5) Restore dashboard to car
6) Back to main window and select right login type
7) Load original EEPROM dump (IMPORTANT!!!)
8) Activate OBD communication by open dangerous light, press on the brakes for several times
9) Press “Write EEPROM” write original dump to dashboard via OBDII (IMPORTANT!!!)
10) After write success, read immo data and save (IMPORTANT!!!)
11) Make a new dealer key and add to immobilizer system
12) If car use keyless key, learn the dealer key with learn method (with immo data support)
13) Start engine with new dealer key, complete.