Hyundai Elantra MD/UD: Smart key unit. Components and 
Components Location - Smart key System - Body Electrical System - Hyundai Elantra MD 2010-2015 Service manualHyundai Elantra MD/UD: Smart key unit. Components and Components Location

Component (1)

Connector Pin Information
No.
Connector A(26 pins)
No.
Connector B(16 pins)
No.
Connector C(22 pins)
1
Battery power load
1
CAN L
1
Start/Stop button switch ILL
2
 -
2
CAN H
2
Start/Stop button lamp
3
Power ground 1
3
 -
3
 -
4
IGN 1
4
Stop lamp fuse
4
Internal antenna #2 power
5
IGN 1 relay
5
Brake switch
5
Internal antenna #1 power
6
ACC
6
Immobilizer antenna power
6
 -
7
IGN 2
7
 -
7
 -
8
Start/Stop button switch 2
8
Wheel speed
8
Trunk antenna power
9
 -
9
Driver toggle button
9
Bumper antenna power
10
 -
10
 -
10
Assistant antenna power
11
 -
11
External buzzer
11
Driver antenna power
12
CAN H
12
P position / Clutch switch
12
SSB LED Blue / GN
13
CAN L
13
Start feedback
13
SSB illumination power
14
Battery voltage CPU
14
Immobilizer antenna ground
14
 -
15
 -
15
Diagnostic - K
15
Internal antenna #2 ground
16
Power ground 2
16
Start/Stop button switch LED
16
Internal antenna #1 ground
17
Starter relay
 
 
17
 -
18
IGN 2 relay
18
 -
19
ACC relay
19
Trunk antenna ground
20
 -
20
Bumper antenna ground
21
Trunk lid switch
21
Assistant antenna ground
22
 -
22
Driver antenna ground
23
RPM
 
 
24
EMS COM
25
Start/Stop button switch 1
26
Assistant toggle button


Smart key. Repair procedures
Smart Key Smart Key Code Saving 1. Connect the DLC cable of GDS to the data link connector in driver side crash pad lower panel, turn the power on GDS. ...