2007 Hyundai Elantra, Alarm/Remote Start

About to work on a 07 Elantra and I am putting in an alarm and remote start. The wires look pretty basic but the tech sheet mentions a keysense. There is no bypass module but do I need the keysense for the remote starter to work?

DEI Lists:

DIRECTWIRE™ WIRING INFORMATION - HYUNDAI / ELANTRA / 2007 / Remote Start

[PRINT THIS PAGE]

12volts      black (40A), red (30A)       +       ignition harness
Starter      white       +       ignition harness
Second Starter      N/A            
Ignition      blue       +       ignition harness
Second Ignition      N/A            
Third Ignition      N/A            
Accessory      pink       +       ignition harness
Second Accessory      yellow       +       ignition harness
Keysense      green       +       ign harn or BCM, wht 24P plug, pin 4
Notes: The BCM (Body Control Module) is in the center dash, behind the A/C controls.
Power Lock      green       -       dr kick or BCM, wht 20P plug, pin 3
Notes: The BCM (Body Control Module) is in the center dash, behind the A/C controls.
Power Unlock      yellow       -       dr kick or BCM, wht 20P plug, pin 11
Notes: The BCM (Body Control Module) is in the center dash, behind the A/C controls.
Lock Motor      gray       5wi      driver kick, gry 39 pin plug, pin 38
Unlock Motor      yellow       5wi      driver kick, gry 39 pin plug, pin 30
Parking Lights+      yellow (L), BROWN / orange (R)       +       fuse box, 30 pin plug, pins 22 and 6
Parking Lights-      blue       -       switch or BCM, wht 20P plug, pin 4
Notes: The BCM (Body Control Module) is in the center dash, behind the A/C controls.
Hazards      green       -       BCM, gray 24 pin plug, pin 9
Notes: The BCM (Body Control Module) is in the center dash, behind the A/C controls.
Turn Signal(L)      yellow/orange       +       switch or fuse box, 30P plug, pin 26
Turn Signal(R)      blue       +       switch or fuse box, 30P plug, pin 11
Reverse Light      gray or brown       +       fuse box, 30 pin plug, pin 13 or 14
Door Trigger      yellow       -       dr kick or BCM, wht 24P plug, pin 22
Notes: The BCM (Body Control Module) is in the center dash, behind the A/C controls.
Dome Supervision      yellow       -       dr kick or BCM, gry 24P plug, pin 1
Notes: The BCM (Body Control Module) is in the center dash, behind the A/C controls.
Trunk/Hatch Pin      green to GREEN/ black       -       dr kick or BCM, wht 24P plug, pin 23
Notes: The BCM (Body Control Module) is in the center dash, behind the A/C controls.
Hood Pin      green       -       pin sw or BCM, wht 24P plug, pin 24
Notes: The BCM (Body Control Module) is in the center dash, behind the A/C controls.
Trunk/Hatch Release      white       -       dr kick or BCM, wht 20P plug, pin 13
Notes: The BCM (Body Control Module) is in the center dash, behind the A/C controls.

The trunk release motor wire is orange (+) in the fuse box, 30 pin plug, pin 28.
Power Sliding Door      N/A            
Factory Alarm Arm      green       -       dr kick or BCM, wht 20P plug, pin 1
Notes: Meter this wire while turning the key in the driver door key cylinder.

The BCM (Body Control Module) is in the center dash, behind the A/C controls.
Factory Alarm Disarm      blue to yellow       -       dr kick or BCM, wht 20P plug, pin 2
Notes: Meter this wire while turning the key in the driver door key cylinder.

The BCM (Body Control Module) is in the center dash, behind the A/C controls.
Disarm No Unlock      with ign, acc, and key sense            
Tachometer      blue or red       ac       pass kick, gray 39 pin plug, pin 5
Notes: Also found at the instrument cluster, white plug, pin 20.

Can also go to any fuel injector and use the wire that is NOT white.
Wait to start      N/A            
Brake Wire      white to black       +       sw or dr kick, gray 39P plug, pin 34
Parking Brake      blue       -       sw or fuse box, 20 pin plug, pin 8
Horn Trigger      red or GREEN/ orange       -       switch or BCM, gry 24P plug, pin 8
Notes: The BCM (Body Control Module) is in the center dash, behind the A/C controls.
Memory Seat 1      N/A            
Memory Seat 2      N/A            
Memory Seat 3      N/A            
Interface Module:      Category:
Immobilizer Bypass      Required:
Yes      Type:
Transponder
Part #: 556UW
Alternate Part1 #: DesignTech 20402
Alternate Part2 #: DesignTech 29402
Notes: Only Canadian models have the immobilizer system.
Smart Starter Kill Relays: Not Available


warning      
This wiring information is being provided free of charge on an "as is" basis, without any representation or warranty. It is your responsibility to verify any circuit before interfacing with it using a digital multimeter.
Directed Electronics assumes no responsibility with regards to the accuracy or currency of this information. Proper installation in every case is and remains the responsibility of the installer. DEI assumes no liability or responsibility resulting from improper installation, even in reliance upon this information.


You would need to energize keysense, yes. If you look at the notes for disarm/no unlock it specifies that the factory alarm will disarm with keysense, ignition and accessory. You do not mention which system you are installing, but with the DEI systems I use there is a status output wire that you would use to power a relay to provide +12V to the vehicle's keysense wire during remote start. You may also be able to just use the second ignition output to power it if your vehicle does not require both accessories for remote start.

You may not need the keysense wire, just pulsing the FAD wire might work. Test it without if you would like.


Keysense is just like any other wire that you need to interface with like ignition, accessory, etc. Just wire up a relay to change your status output from a negative to a positive and connect it to the keysense wire in the vehicle. Or use the second ignition output if the vehicle does not require it. It will make the computer believe there is a key in the ignition switch every time you remote start it.

I may just use the key sense since it will disarm the factory alarm without unlock and just to be on the safe side. Thanks for your help and the info.