The 2016–2022 RX uses the same key setup, so everything on this page applies to those years too. The full picture is on the Lexus RX key guide.

2018 Lexus RX: key facts

Key type: Smart / proximity key
Push-to-start: Yes
Transponder chip: 8A (128-bit DST-AES)
Programming: OBD
All keys lost: We can originate new keys on site

HYQ14FBB smart fob (G board 0010), 8A chip. Add-a-key over OBD is routine; all-keys-lost uses a DST-AES emulator with professional tools.

Same key system as the 2016–2022 RX

Lexus kept the RX's key system unchanged across 2016–2022, so everything about replacing a 2018 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 Lexus RX 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 Lexus programming in general on our Lexus 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.

2018 Lexus RX key replacement

2018 Lexus RX: key facts

Same key system as the 2016–2022 RX

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