Hi,
Either the starter Bendix is bad and not fully engaging to start the engine, you have a couple teeth off it, or the starter is loose. Make sure it is tight and doesn't move around by hand.
You need to remove the starter and inspect. If nothing on the flywheel is damaged, replace the starter. Actually, you can have it bench tested at a parts store.
Here is a link that explains how in general a starter is replaced:
https://www.2carpros.com/articles/how-to-replace-a-starter-motor
Here are directions specific to your vehicle. The attached pics correlate with the directions.
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2013 Hyundai Genesis Coupe L4-2.0L Turbo
Repair Procedures
Vehicle Starting and Charging Starting System Starter Motor Service and Repair Removal and Replacement Repair Procedures
REPAIR PROCEDURES
Removal and Installation
1. Disconnect the battery negative cable(A).
pic 1
2. Set the jack under the engine oil pan.
NOTE:
Insert the rubber block between engine oil pan and jack to prevent the damage of oil pan.
3. Remove the LH engine mounting bracket nut (A).
Tightening torque :
63.7 - 83.4 N.m (6.5 - 8.5 kgf.m, 47.0 - 61.5 lb-ft)
pic 2
4. Lift up the engine assembly slightly by using a jack to get access to the side of engine.
5. Remove the engine support bracket (A). And then remove cable and connector from starter (B).
Tightening torque :
49.0 - 63.7 N.m (5.0 - 6.5 kgf.m, 36.2 - 47.0 lb-ft)
pic 3
6. Remove the bolts and starter (A).
Tightening torque :
42.1 - 53.9 N.m (4.3 - 5.5 kgf.m, 31.1 - 39.7 lb-ft)
pic 4
7. Installation is the reverse of removal.
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Let me know what you find or if you have other questions.
Joe
Images (Click to make bigger)
Tuesday, August 11th, 2020 AT 3:48 PM