FCC ID NI4TMTX-1
Fits Lexus (1999–2003)
NI4TMTX-1 is the FCC ID printed on the label under the fob’s battery cover — on this code we verify fit for Lexus (1999–2003). 1 aftermarket replacement is published, 0 in stock.
- Makes1Lexus
- Models1
- Model years1999–2003
- Frequency315MHz
- In stock0 / 11 SKU
Vehicles verified for NI4TMTX-1
Lexus
1 model- RX300
Model years 1999–2003.
Cross-reference data for NI4TMTX-1
Cross-references (original part numbers)
1The original part numbers our aftermarket NI4TMTX-1 replacement matches against. Tap a number to copy it.
Electronics
- Frequency
- 315 MHz
- Transponder chip
- TEXAS ID 4C TAG
- Buttons
- 3
- Key types
- Remote Head Key
- IC ID (Canada)
Four checks before you program
- 1
FCC ID on the label
The code on the customer's key must read exactly the same.
This codeNI4TMTX-1 - 2
Frequency
A remote on the wrong frequency will never talk to the car, even if it looks identical.
This code315 MHz - 3
Buttons & layout
Match the button count and the button layout to the original key.
This code3-button - 4
Transponder chip
For push-to-start and keyed ignitions, the chip has to match the immobiliser.
This codeTEXAS ID 4C TAG
Aftermarket replacements for NI4TMTX-1
1999-2003 Lexus / 3-Button Remote Head Key / PN: 89070-48020 / NI4TMTX-1
Quick answers — FCC ID NI4TMTX-1
What vehicles use FCC ID NI4TMTX-1?
FCC ID NI4TMTX-1 is verified in our catalog for Lexus (RX300), model years 1999–2003.
What chip and frequency does NI4TMTX-1 use?
NI4TMTX-1 keys use the TEXAS ID 4C TAG transponder chip and operate at 315 MHz.
Is there a replacement for NI4TMTX-1?
Yes — Car Key Source stocks 1 aftermarket remote head key replacement for FCC ID NI4TMTX-1, sold wholesale to the trade with US & Canada same-day dispatch.
What original part numbers cross-reference to NI4TMTX-1?
FCC ID NI4TMTX-1 cross-references to original part number 89070-48020 — our replacements are matched against these originals.
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Need help confirming fit for NI4TMTX-1?
Leave your email and phone — we’ll verify the cross-reference against the vehicle on your bench and reply with the exact SKU. No spam, ever.
So we can call you about fitment or your order.


