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How To Guide:
Source: LAUNCH TECH CO LTD
LAUNCH Operation instructions of Add A Key and All Keys Lost for Porsche Cayenne
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Operation instructions of Add A Key and All Keys Lost for Porsche Cayenne
Features：
Support Add A Key and All Keys Lost for Cayenne 2011-2017, need to remove and read the front-end ECU module.
Support products：
Launch X431 Pro V5, X431 Tablet V S, which need to be used with Immobilizer
programmer G3.
Tested models：
Porsche Cayenne 2013, VIN: WP1AG2928D***
Operation guideline
Backup Immobilizer data
1. Remove the vehicle front-end ECU, which is located above the accelerator pedal
the removed front-end ECU
2. Disassemble the front-end ECU and find out the master control chip, as shown below; confirm the model, there are 4 types: 1L15Y, 1N35H, 2M25J, 5M48H
(It is 5M48H for this vehicle model):
a) Connect the vehicle OBD interface, tablet, Immobilizer programmer G3, as shown
b) Enter the Porsche Immobilizer software and it will show the menu of main functions of
Immobilizer
c) Select "Immobilizer Password Reading> Cayenne> 2011-2017> 5M48H", the current
menu is as shown below:
d) Click 【View the wiring diagram】
e) Complete wire soldering according to the wiring diagram. Click 【Back up DFlash】, it
will take about 15 seconds. The input box will pop up when the backup is successful,
enter the file name
f) The file is successfully saved, and it will display the path of saving
3. Generate dealer keys
a) Return to the main menu of Immobilizer functions, select "Immobilizer Key Matching>
Cayenne> 2011-2017", the current menu is shown below
b) Select 【Generate Dealer Keys】, and a list of backed up Immobilizer data files will pop
up
c) Select "13 cayenne dflash.bin", load the Immobilizer data, and it will display the IDs of 8
key positions,
d) Select a blank key position (ID: FFFFFFFF), and it will prompt "Please put the key to be
generated into the Immobilizer programmer G3, and then click “OK”, follow the
prompts
e) Click “OK” and wait for about 10 seconds, the generation is successful.
4. Key Learning
a) Restore the front-end ECU, solder back the soldered components, and reconnect the cut
wires. Close the cover and install it back on the vehicle. If the module is abnormal, the
key cannot be pulled out after inserted into the ignition switch, and needs to recheck the
module circuit.
b) Select 【Key Learning 】, it prompts "All keys will be learned again (including the
original keys)", click “ OK ” to continue, and it prompts "Turn on Emergency Flashers", and click “OK” to continue after completion.
c) Enter the system and it will display a list of backed up Immobilizer data files
d) Select "13 Cayenne dflash.bin", the input box pops up, and input the 1-digit number of
keys to be learned (enter 2)
e) After clicking “OK” for a few seconds, it prompts "Insert the first key and turn on the
ignition switch". At this time, the instrument does not light up, and the mileage displays
"2-0"
f) Insert the first key, and then click “OK”. After a few seconds, the instrument will light
up, the mileage will display "2-1", and the first key has been learned successfully
g) It prompts "Insert the second key and turn on the ignition", insert the second key, and then click “ OK ” . After a few seconds, the instrument will light up, the mileage will
display "2-2", and the second key has been successfully learned
h) Start to configure the system. After about 10 seconds, the learning is complete, and the
normal mileage will be shown on the instrument
