there iss no reset you have to dis-connect battery for about 30 seconds to reset the computer
See Hyundai Technical Service Bulletin #08-FL-007 dated July 2008.
reset service engine light
The check engine light, on your Hyundai Elantra can be reset by removing the fuse. Keep the fuse out for 10 seconds and replace it to its slot.
A reset Engine Service Light comes on when an issue comes up with in the engine. This light can be reset by a tech or by fixing the problem.
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