Infiniti QX50/QX55 2020 Smart Key
Infiniti Smart Key (NCF29A1M)
Overview
Key Type
Smart Key
Markets
All
Transponder
ID4A (HITAG 128-bits AES / NCF29AXM)
Integrated
Frequency
433 MHz
Battery
CR2032
Transponder Cloning
No
Skill Level
Skilled
Universal Keys
KR5TXN7 Xhorse ID 0515 466
Test passed
Original Keys
KR5TXN1 4Buttons w/ Power door release (back gate), Panic alarm
KR5TXN1 5Buttons w/ Power door release (back gate), Remote engine start, Panic alarm
KR5TXN7 4Buttons w/ Trunk release, Panic alarm
KR5TXN7 5Buttons w/ Remote engine start, Trunk release, Panic alarm
KR5TXN7 4Buttons w/ Power door release (back gate), Panic alarm
KR5TXN7 5Buttons w/ Power door release (back gate), Remote engine start, Panic alarm
Overview
Add key
OBD
All keys lost
OBD
Prepare dealer key
Not specified
Remote programming
Automatic
All keys erased automatically
Yes
Power supply
Recommended (if under 11.5V)
Additional cables required
Yes
Additional cables required (All keys lost)
No
Number of key slots
4
Key Programming via OBD
General Instructions
- Always program existing/original keys first, then add new keys. If a new key is programmed first, the original keys may stop working and cannot be re-registered.
- Important: Before starting programming, ensure the column lock is engaged — turn the ignition OFF and open the driver’s door. Verify the lock is engaged, then proceed.
- BCM's with known software issue: 284B1-3ZP0A, 284B1-4CB0A, 284B1-4CB1A, 284B1-4CB2A, 284B1-4CB3A, 284B1-4CB4A, 284B1-4CB5A, 284B1-4CE1A.
Emergency Key Spot
The emergency spot is located in the start/stop button. When programming, hold the key against it.
Additional Cables and Adapters
Add Key
After 2021 BCM 40-PIN Bypass cable may be required for key programming.
Programmers
Abrites AVDI
Recommended
Immobilizer Programming
Autel
Immobilizer Programming
Xhorse
Immobilizer Programming
Smart Pro
Immobilizer Programming
TDB1000
Not supported
Code Series
1-22185 (10-10 Cuts) 40001-41518 (10-10 Cuts)
Media
Emergency Key
Cutting tutorial
Overview
Double locked
No
Opening direction (LHD)
Clockwise
Decoder capability
Door LockBoot/Trunk
Decoding Tips
- To decode the lock read in the SAME direction as it was picked.
- No keys use a #1 depth in the last position. (1-22185)
- No keys contain the same depth in more than 3 adjacent positions. (1-22185)
- No keys contain the same depth in more than 5 positions. (1-22185)
- No keys contain a #4 depth in the first two positions. (1-22185, 30001-37850)
- There are only four possible cut combinations for the first two positions: 1-2; 2-1; 2-3; 3-2. (1-22185)
Overview
Original key glued
No
Synchronizing
No
Repair Instructions
- Keys has an integrated immobilizer chip.
- There is no need to synchronize or reprogram the key after replacing the battery.
Media
Shell and battery change
Circuitboard
Smart Key 180144500 PCB
