Launch X431 IMMO Elite/IMMO Plus and X431 Key Programmer can generate remote and program new keys to Peugeot 408.
Step 1: Read transponder with X431 Key Programmer
Step 2: Generate remote with X-431 Key Programmer
Step 3: Read Anti-theft key password with X431 IMMO Elite
Step 4: Program Anti-theft key with X-431 IMMO Elite
In details…
Connect X431 IMMO Elite to the Peugeot 408 car correctly, and connect X-431 Key Programmer to X431 IMMO Elite tablet
Step 1: Read transponder with X431 Key Programmer
Put the original key into the coil of Launch X431 Key Programmer to read transponder
Step 2: Generate remote with Launch X431 Key Programmer
Select Vehicle Remote>> Peugeot>> 408>> 408/508/301 wireless remote FSK 14-478>> Generate
Wait a while till the remote is generated
Step 3: Read Anti-theft key password with X431 IMMO Elite
Select Peugeot Immobilizer software>> Anti-theft Password Reading>> Added Anti-theft Password Reading
Internet is needed to perform this function. Make sure the device has normal access on WiFi connection
Then follow the prompt to turn off or turn on ignition switch with the original car key
Read anti-theft password successfully
Step 4: Program Anti-theft key with X-431 IMMO Elite
Select Anti-theft Key Matching>> Automatic Scan
Confirm the vehicle info
Pay attention to the instruction to program key and continue
Select “Programming of Keys”
Read the on-screen notes and continue
Enter the code (anti-theft password)
Enter the number of the keys you want to match
The follow the prompt to operate
The new keys were programmed successfully.
Video guides:
Peugeot 408 Anti-theft Key Matching with Launch X431 IMMO Elite:
How to Program Peugeot 408 All Smart Keys Lost by Launch X431 IMMO Plus?