How to Reset the Oil Life Indicator on a 2017–2020 Hyundai Elantra

Which Hyundai Elantra model years does this cover?

These oil life reset specifications apply to every Hyundai Elantra built from 2017 through 2020 — the AD (6th generation), compact sedan. Nothing in this specification changes between those model years. Pick your year for the engines it offered, what changed that year, and the problems recorded against it.

What changed during the 2017–2020 Hyundai Elantra

• 2017AD generation launch; 2.0L MPI base engine, 1.4T Eco introduced
• 20181.6T Sport sedan added, replacing the previous-generation naturally aspirated Sport
• 2019Facelift: new front/rear fascias, standard LED DRLs, available LED headlights on upper trims
• 2020Final model year before the CN7 redesign; carryover engines

How do you reset the oil life on a 2017–2020 Hyundai Elantra?

4 steps, using only the controls in the car, the full sequence is above.

Do you need a scan tool to reset the oil light on a 2017–2020 Hyundai Elantra?

No. The procedure above uses the vehicle's own controls. A scan tool is only necessary if the reset does not take, which usually points at a different fault.

Why won't the oil light reset on a 2017–2020 Hyundai Elantra?

Almost always a timing problem in the sequence, a step held too briefly, or the ignition in the wrong position. Repeat it exactly, with the engine off and the key in accessory rather than run, unless the steps say otherwise. Same trip-odometer-hold method carried over from the MD/UD generation; it's a mileage counter, not an oil-condition sensor.