Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2019 Hyundai Ioniq Plug-In HybridFACTORY OEM SERVICE PROCEDURE
[In The Case Of Installing Used ECM]
- Perform "ECM NEUTRAL MODE " procedure with GDS.
(Refer to "IMMOBILIZER SYSTEM DIAGNOSIS (PHEV) ")
- After finishing "ECM NEUTRAL MODE ", perform "TEACHING MODE PROCEDURE DESCRIPTION (STEP BY STEP)
" procedure with GDS.
(Refer to "IMMOBILIZER SYSTEM DIAGNOSIS (PHEV) ")
- Perform "ECM NEUTRAL MODE " procedure with GDS.
(Refer to "SMART KEY ")
- After finishing "ECM NEUTRAL MODE ", insert the key (or press the start button) and turn it to the IGN ON and OFF position. Then the ECM learns the smart key information automatically.
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.