Hyundai Sonata: Smart Key System / Smart Key Unit Components and Components Location
| Components (1) |
| No | Connector A | Connector B | Connector C |
| 1 | BAT (+)_Signal | Driver's door antenna_GND | - |
| 2 | BAT (+)_Power | Driver's door antenna_Power | - |
| 3 | IGN 1 | - | - |
| 4 | IGN 2_Relay output | B-CAN (High) | SSB LED (OFF) |
| 5 | IGN 1_Relay output | B-CAN (Low) | SSB LED (IGN) |
| 6 | Assist door antenna_GND | Wheel speed sensor | SSB LED (ACC) |
| 7 | Interior antenna 2_GND | AT : 'P' signal input MT : Clutch switch signal input | SSB Illumination (+) |
| 8 | Trunk antenna_GND | - | SSB Illumination (-) |
| 9 | Interior antenna 1_GND | C-CAN (Low) | Immoblizer antenna_GND |
| 10 | Bumpper antenna_GND | C-CAN (High) | Immoblizer antenna_Power |
| 11 | ACC | GND 1 | - |
| 12 | IGN2 | GND 2 | Start signal feedback |
| 13 | ACC_Relay output | Assist door switch_signal | Stop lamp fuse |
| 14 | Starter_Relay output | Driver's door switch_signal | Brake switch |
| 15 | - | - | Immoblizer indicator |
| 16 | Assist door antenna_Power | EMS CAN | Exterior buzzer |
| 17 | Interior antenna 2_Power | - | ? |
| 18 | Trunk antenna_Power | RPM_Input | |
| 19 | Interior antenna 1_Power | SSB switch2 | |
| 20 | Bumpper antenna_Power | SSB switch1 |
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 a ...
Smart Key Unit Schematic Diagrams
Circuit Diagram
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Other information:
Hyundai Sonata LF 2014-2019 Service Manual: Inhibitor Switch Troubleshooting
Fault Diagnosis
Fault Diagnosis for Symptom
Major Symptom Expected Cause Items to Check and Measures Shift lever not operating Gear not marked on cluster Shock occurs while shifting lever Warning lamp ON Engine OFF while vehicle is parked Inhibitor switch circuit abnor ...
Hyundai Sonata LF 2014-2019 Service Manual: Auto Head Lamp Leveling Unit Repair procedures
Inspection
1.
Ignition "ON".
2.
Turn on the head lamp switch.
3.
Check for operation. If the aim of the head lamps changes smoothly when the head lamp leveling switch is turned.
4.
If the operation does not work well, inspect the connector and terminals to be sure they are all making ...
