2003–2008 Infiniti FX35 models in the U.S. and Canada use a transponder ignition key plus a separate keyless entry remote, rather than a smart/proximity push‑to‑start system. The transponder key must be cut and then electronically programmed to the vehicle’s immobilizer using appropriate diagnostic equipment. The keyless entry remote is programmed to the vehicle’s body control module using an onboard procedure that typically involves cycling the ignition and pressing buttons on the remote.
Key types used on the FX35:
transponder chip key (standard metal key with immobilizer chip) used with separate keyless entry remote (2003-2008)
standalone keyless entry remote (3-button/4-button fob, no key blade) (2003-2008)
Common fob FCC IDs: KBRASTU15 — check the back of your fob; we confirm the exact variant on site.
2003, 2007 Infiniti FX35
Route verified — exact steps vary by trim/equipment
Route verified as onboard programming (no dealer needed). The sequences below are general route guidance — use them only if your vehicle shows the same prompts and controls. If the prompts don’t match, stop and call us.
Show the programming methods (19 steps)
Vehicle and Model
Programming step
1 2003 Infiniti FX35 specified for keyless entry remote fob and smart key programming
Programming step
2 Separate instructions provided for remote fob programming when a separate key and remote exist
Programming step
3 Smart Key System noted as not on-board programmable
Programming step
4 Professional locksmith required for smart key remote fob programming
Remote Fob Programming Sequence
Close the doors
1 Close and lock all doors with driver-side power lock/unlock switch
Insert the key
2 Insert key into ignition and remove it at least six times within 10 seconds (withdraw completely each time)
Programming step
3 Hazard lamps flash if the key insertion/removal sequence performed successfully
Insert the key
4 Insert key into ignition and turn to ACC position
Wait / timing window
5 Within 5 seconds, push ANY button on the remote transmitter one time; hazard lamps should flash
Programming Multiple Transmitters
Press LOCK + UNLOCK
1 If additional transmitters exist (including old ones), unlock then lock all doors using driver-side power lock/unlock switch
Wait / timing window
2 Within 5 seconds of locking, push ANY button on the next remote; hazard lamps should flash
Press LOCK + UNLOCK
3 Repeat the unlock/lock and button-press step for each transmitter, including existing transmitters
Press / hold a fob button
4 Avoid pressing the remote button more than once during the single-press step to ensure success
Remove the key
5 Turn key to OFF, remove keys, unlock doors using driver-side power lock/unlock switch, and open driver-side door to finish
Smart Key System Procedure
Programming step
1 Smart Key System explicitly requires qualified professional programming
Programming step
2 Vehicle is not on-board programmable for smart key remote fobs
Programming step
3 Locate an automotive locksmith in the area using Low Rate Locksmith
Programming step
4 Driving vehicle to the locksmith may save money compared with mobile service
Programming step
5 Locksmith will hook up specialized computer equipment to the vehicle to program the smart key remote fob
Route verified — exact steps vary by trim/equipment
Route verified as onboard programming (no dealer needed). The sequences below are general route guidance — use them only if your vehicle shows the same prompts and controls. If the prompts don’t match, stop and call us.
Show the programming methods (25 steps)
Vehicle/Application
Programming step
1 Model: 2004 Infiniti FX35
Programming step
2 Systems: Keyless entry remote fob and Smart Key System
Programming step
3 Two scenarios covered: separate key with remote, and Smart Key System
Programming step
4 Smart Key System: not on-board programmable
Programming step
5 Professional programming required for Smart Key remotes
Preparation Steps (separate key and remote)
Close the doors
1 Close and lock all doors with driver's power lock/unlock switch
Programming step
2 Have a separate key and remote available
Insert the key
3 Ensure ability to insert and withdraw key from ignition cylinder
Wait / timing window
4 Be ready to perform timed steps within 10 seconds and 5 seconds windows
Programming step
5 Hazard lamps indicate successful entry into programming steps
Programming Procedure (separate key and remote)
Remove the key
1 Insert and remove key from ignition at least six times within 10 seconds
Programming step
2 Hazard lamps flash if the six-times step performed successfully
Insert the key
3 Insert key and turn to ACC position after successful flash
Wait / timing window
4 Within 5 seconds, push ANY button on the remote one time to program
Doors lock-cycle (confirm)
5 Hazard lamps should flash to confirm remote programming
Programming Additional Transmitters
Press LOCK + UNLOCK
1 For remaining transmitters (including existing ones), unlock then lock all doors using driver's power switch
Wait / timing window
2 Within 5 seconds of locking, push ANY button on the next remote one time
Doors lock-cycle (confirm)
3 Hazard lamps should flash to confirm each transmitter
Press LOCK + UNLOCK
4 Repeat unlock/lock then button press for each additional transmitter
Remove the key
5 After programming all transmitters, turn key to OFF and remove key from ignition
Smart Key and Locksmith Instructions
Programming step
1 Smart Key System requires qualified professional for programming
Programming step
2 Locate an automotive locksmith using Low Rate Locksmith
Programming step
3 Driving vehicle to locksmith may be cheaper than on-site service
Programming step
4 Locksmith uses specialized computer equipment to program Smart Key remotes
Programming step
5 On-board programming not available for Smart Key-equipped vehicles
Route verified — exact steps vary by trim/equipment
Route verified as onboard programming (no dealer needed). The sequences below are general route guidance — use them only if your vehicle shows the same prompts and controls. If the prompts don’t match, stop and call us.
Show the programming methods (20 steps)
On-board programming steps (driver’s-side power lock method)
Close the doors
1 Close and lock all doors with driver’s-side power lock/unlock switch
Insert the key
2 Insert key into ignition and remove completely at least six times within 10 seconds
Doors lock-cycle (confirm)
3 Successful six-times step confirmed by hazard lamps flashing
Insert the key
4 Insert key into ignition and turn to ACC position after successful initial step
Wait / timing window
5 Within 5 seconds of ACC, push ANY button on the remote one time to program
Programming multiple transmitters
Press LOCK + UNLOCK
1 After first remote, unlock then lock all doors using driver’s-side power lock/unlock switch
Wait / timing window
2 Within 5 seconds of lock, push ANY button on the next remote to program
Doors lock-cycle (confirm)
3 Hazard lamps should flash to confirm each additional transmitter
Press LOCK + UNLOCK
4 Repeat unlock/lock and button-press sequence for each remaining transmitter
Programming step
5 Include existing transmitters in the sequence to retain their programming
Exiting programming mode and final steps
Turn ignition to ON
1 Turn key to OFF position after programming transmitters
Remove the key
2 Remove keys from ignition following OFF position
Press LOCK + UNLOCK
3 Unlock doors using driver’s-side power lock/unlock switch to prepare for exit
Programming step
4 Open driver-side door after unlocking to complete procedure
Programming step
5 Ensure all intended transmitters were programmed before finishing
Smart Key System (professional programming)
Programming step
1 Vehicle requires qualified professional to program Smart Key remote fobs
Programming step
2 Locate an automotive locksmith using Low Rate Locksmith
Programming step
3 Specialized computer equipment required to interface with vehicle for programming
Programming step
4 Driving vehicle to locksmith may save money compared to mobile service
Programming step
5 On-board programming instructions do not apply to Smart Key System vehicles
Route verified — exact steps vary by trim/equipment
Route verified as onboard programming (no dealer needed). The sequences below are general route guidance — use them only if your vehicle shows the same prompts and controls. If the prompts don’t match, stop and call us.
Show the programming methods (20 steps)
Pre-Programming Requirements (separate key and remote)
Close the doors
1 Close and lock all doors using driver-side power lock/unlock switch
Insert the key
2 Insert key into ignition and remove it at least six times within 10 seconds
Programming step
3 Hazard lamps flash indicates successful entry into programming sequence
Programming step
4 Withdraw key completely from ignition cylinder each time during the six removals
Programming step
5 Warning that performing the six removals too fast prevents entering programming mode
Programming Sequence (separate key and remote)
Insert the key
1 After successful six removals, insert key and turn to ACC position
Wait / timing window
2 Within 5 seconds of ACC, push ANY button on the remote transmitter one time
Doors lock-cycle (confirm)
3 Hazard lamps should flash to confirm remote programming
Press / hold a fob button
4 Warning not to press the remote button more than once during that step
Press / hold a fob button
5 Failure to follow single-press rule will make programming unsuccessful
Adding Additional Transmitters
Press LOCK + UNLOCK
1 For each remaining transmitter (including old ones), unlock then lock all doors using driver-side switch
Press LOCK + UNLOCK
2 Within 5 seconds after lock/unlock, push ANY button on the next remote
Doors lock-cycle (confirm)
3 Hazard lamps should flash to confirm each additional transmitter programmed
Press LOCK + UNLOCK
4 Repeat unlock/lock then button press sequence for each transmitter to be retained
Cycle the ignition ON/OFF
5 Include existing transmitters in the programming cycle to ensure continued functionality
Finalization & Smart Key Notes
Remove the key
1 Turn key to OFF, remove keys from ignition, and unlock doors with driver-side switch
Programming step
2 Open driver-side door after removing keys to complete procedure
Programming step
3 Smart key-equipped vehicles are not onboard programmable by owner
Programming step
4 Locksmith will connect specialized computer equipment to program smart key remote fobs
Programming step
5 Recommendation to consider vehicle mobility before locksmith visit to potentially reduce cost
Year coverage comes from our consolidated vehicle programming dataset. Route-level programming status is reviewed against internal route sheets and available manufacturer, security-access, and professional tool references. Exact button sequences are marked source-verified only when we have year/equipment-specific support; where a year is labeled “route verified, steps vary,” we confirm the exact fob, trim, and prompts before programming. Reviewed for route and safety by Mohammad H. Abdelhadi, ALOA-Certified Master Locksmith.
Year
Route status
Exact steps
2003, 2007
Route verified
General guidance
2004
Route verified
General guidance
2005
Route verified
General guidance
2006, 2008
Route verified
General guidance
Common questions
Does my 2003–2008 Infiniti FX35 use a smart key or proximity fob?
No. 2003–2008 FX35 models use a standard transponder ignition key with a separate keyless entry remote, not a smart/proximity push-to-start system.
Can I program a replacement remote for my FX35 myself?
Yes, the keyless entry remote for 2003–2008 FX35 can be programmed using an onboard procedure; the transponder ignition key itself still requires professional programming equipment.
Is the same style of key used on all 2003–2008 FX35 models?
Yes. All 2003–2008 FX35 vehicles with regular ignition use a transponder chip key plus a separate remote fob, though specific remote part numbers may vary by year.
Can you program a FX35 key fob without going to the dealership?
For most years, yes - the route is onboard relearn or an OBD tool, both of which a mobile locksmith handles at your location.
Does this program the remote only, or the transponder key too?
It depends on your key type. Tell us your FCC ID and we will confirm.
What if my year says professional programming required?
Those years need a programmer or security access; we bring the tool to you and program it on site.
How much does it cost?
It depends on year, key type, and whether you have a working key. Call (833) 439-8636 for a firm price before we dispatch.
Need your FX35 fob programmed? We come to you, 24/7.
