The 2000–2003 Maxima uses the same key setup, so everything on this page applies to those years too. The full picture is on the Nissan Maxima key guide.

2003 Nissan Maxima: key facts

Key type: Transponder chip key
Push-to-start: No
Transponder chip: Varies by trim — we confirm by VIN
Programming: OBD
All keys lost: We can originate new keys on site

Catalogs genuinely split for the 1999-2003 Maxima: Philips ID41 (NATS) in some references versus Texas 4D60 (NI02 key) in Ilco/JMA-aligned listings — both key types exist in the field, so we confirm from the key stamp or by testing the chip before cutting. Either way it is OBD-programmable with a BCM-derived PIN.

Same key system as the 2000–2003 Maxima

Nissan kept the Maxima's key system unchanged across 2000–2003, so everything about replacing a 2003 key — blanks, programming, and what happens if every key is lost — matches the rest of that run. The full year-by-year breakdown lives in our Nissan Maxima key guide.

What drives the price is the key type, whether you still have a working key, and where the car is parked. There's more on Nissan programming in general on our Nissan key page.

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Reviewed by David, Owner & Lead Technician, Wilshire Lock & Key — in the locksmith trade since 1987.

Last updated 2026-10-11.

2003 Nissan Maxima key replacement

2003 Nissan Maxima: key facts

Same key system as the 2000–2003 Maxima

We cover all these cities