If the Engine Doesn't Turn Over or Turns Over Slowly
Do not push or pull the vehicle to start it. This could cause damage to your vehicle. See instructions for "Jump Starting" provided in this chapter.
CAUTION
Push or pull starting the vehicle may cause the catalytic converter to overload which can lead to damage to the emission control system.
If the Engine Turns Over Normally but Doesn't Start
Check the fuel level and add fuel if necessary.
If the engine still does not start, have your vehicle checked by an authorized HYUNDAI dealer.
Hyundai Elantra AD (2016-2020) Service Manual: Starter Relay Repair procedures
Inspection
1.
Turn ignition switch OFF and disconnect the negative (-) battery cable.
2.
Remove the fuse box cover.
3.
Remove the starter relay (A).
4.
Using an ohmmeter, check that there is continuity between each terminal.
TerminalContinuity30 - 87NO85 - 86YES
5.
Apply 12V ...
Hyundai Elantra AD (2016-2020) Service Manual: Repair procedures
On-vehicle Inspection
Inspect ignition coil assembly and Perform spark test
1.
Check for DTCs.
•
If a DTC is present, perform troubleshooting in accordance with the procedure for that DTC. (Refer to DTC guide)
2.
Check if sparks occur.
(1)
Remove the engi ...