The 2018–2022 Accord uses the same key setup, so everything on this page applies to those years too. The full picture is on the Honda Accord key guide.

2020 Honda Accord: key facts

Key type: Smart / proximity key
Push-to-start: Yes
Transponder chip: 4A (NXP Hitag AES, NCF29A3M)
Programming: OBD
All keys lost: We can originate new keys on site

Tenth generation: push-button start standard on all trims (CWTWB1G0090 fob). US vendor listings identify the chip as Hitag AES 4A, and OEM listings describe it as NXP AES (128-bit) — consistent with 4A, not ID47, so treat 4A as controlling for tool menus despite some overview catalogs labeling this fob ID47. Aftermarket all-keys-lost coverage lagged early in the run; current pro tools handle it.

Same key system as the 2018–2022 Accord

Honda kept the Accord's key system unchanged across 2018–2022, so everything about replacing a 2020 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 Honda Accord 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 Honda programming in general on our Honda 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.

2020 Honda Accord key replacement

2020 Honda Accord: key facts

Same key system as the 2018–2022 Accord

We cover all these cities