| Troubleshooting |

Battery Repair procedures
Battery Sensor Description and OperationHyundai Elantra AD (2016-2020) Service Manual: Smart Key Repair procedures
Smart Key
Smart Key Code Saving
1.
Connect the DLC cable of GDS to the data link connector (16 pins) in driver side crash pad lower panel, turn the power on GDS.
2.
Select the vehicle model and then do "Smart Key Code Saving".
3.
After selecting "Smart Key Teaching" menu, push "Enter" k ...
Hyundai Elantra AD (2016-2020) Service Manual: Troubleshooting
Standard Flow of Diagnostic Troubleshooting
Notes With Regard To Diagnosis
The phenomena listed in the following table are not abnormal.
ConditionExplanationSystem check soundWhen starting the engine, a thudding sound can sometimes be heard coming from inside the engine compartment. This is bec ...