<div align='center'>[b]Stop Seat Belt Warning Chime on 2011 Hyundai Santa Fe 2.4 Auto AWD GLS
[b]READ THOROUGHLY and ENTIRELY BEFORE DECIDING TO PROCEED
[b]WHY DO THIS?
1) You're a volunteer firefighter (who actually specializes in extricating vehicle entrapment patients) and you're going less than 10mph, talking with dispatch and on the cell phone as you are setting up incident command. The background noise of the chime is very bad and obnoxious to all.
2) You're pulling up to the mailbox on your private drive and need to power down the window and gather your mail. The reminder is not needed on your private road or as you're backing into your garage.
3) You're going to neighborhood garage sales and the chime kicks in at 10mph which is annoying when you're talking with your passenger.
[b]EXPLANATION OF FIX:
Permanently eliminates the seat belt warning chime from activating when driver side seat belt (buckle switch) is not engaged.
[b]THEORY OF OPERATION:
The driver seat belt buckle switch is a normally closed switch. I tested this by connecting pins 3 & 8 at jack I18 and obtained continuity (not to be confused with voltage) with the seat buckle empty.
I had the seat un-mounted at this point yet could and did connect the seat belt. This opened the normally closed switch and stopped continuity. This tells me that with the seat belt buckled, the BCM (Body Control Module) is not going to react to an open switch (buckled belt).
An unbuckled belt (switch normally closed) causes the BCM, at pin 14, jack M13-B to trigger the chime operation.
By permanently ensuring the circuit is always open, one can cause the BCM not to ever trigger. This does not electrically affect the SRS but a deploying airbag, along with pre-tensioners, need to have the seat occupant held by the seatbelt to be effective and safe. [b]Use common sense when you decide not to wear your seatbelt.
[b]STEPS: (Read all steps first to get a feel and visual of what's involved)
1) Disconnect the negative battery cable and wait five minutes.
2) NOTE: The following steps un-attach the seat from the floor to allow access under the seat, but the seat is not removed from the vehicle.
a. Remove the four driver seat mounting bolt covers. These snap off easily by spreading the sides.
b. Slide the seat forward.
c. Using a 14mm socket, remove the two rear bolts.
d. Slide the seat backward.
e. CAUTION: [b]you can damage your wiring harness here
; using a 14mm socket, remove the two front bolts. The seat is now entirely free and can tip over and is no longer easy to slide on its track.
f. If you position the back-back just right, it will lean on the rear seat cushion at the same time the seat you're working on will tip back enough for you to access the harness.
3) With the seat free floating, there are two things to do next:
a. release the black harness retaining clip from the undercarriage of the seat.
b. release the two yellow and one brown plugs from their mates. Each one is a bit different.
c. The harness should now be fully free from the seat and easy to work on.
4) The yellow plug and jack in the middle is what you're looking to work on. It has four wires coming into it.
5) Let's do some confirmation that you have the right thing.
a. From the www.hmaservice.com
website; SANTAFE(CM)>2011>G2.4 DOHC>Supplemental Restraint System(SRS)>Schematic Diagrams; SD569-3; Supplemental Restraint System (SRS) (3).
b. It is jack/plug "I18", pin 3, all black wire, DRIVER SEAT BELT BUCKLE SWITCH, photo 78.
c. If you're not handy or comfortable studying those documents, you're looking for the solid black wire on the edge of the middle yellow socket (the socket or jack heads to the BCM). The pin side heads to the seat belt buckle.
d. The wire loom which is bright yellow (indicating it is part of the SRS), can easily be pushed back to expose four wires. I have a blue with silver spot, a black, a yellow with a silver spot, and a black/white.
e. Cut the black wire (pin 3, jack I18, position 3 [albeit this is misleading] and the jack positions are not numbered) about 1 inch from the jack.
f. Take the short end and tuck it into an open spot. It will never move. No tape needed.
g. The other end can just peacefully stay where it is.
h. Slide the yellow loom (the outer covering) back into place.
6) Reattach the driver seat but don't tighten just yet, but enough to ensure the seat slides on the tracks.
7) Reattach the negative battery lead.
8) Go for a test drive with belt on and belt off.
9) If you're successful, there won't be any warning lights with either the belt buckled or not.
[b]10) [b]Upon your return don't forget to properly torque the seat mount bolts.
11) Replace the decorator caps.
12) You're done.
[b]CAUTIONS & DISCLAIMERS OF THIS MODIFICATION WHICH:
1) removes the audible (chime) and visual (instrument panel) warnings for an unbuckled driver side seat beat.
2) is reversible with knowledge of soldering and heat shrink tube.
3) is in no way an endorsement for not wearing your seatbelt. Seat belts save lives and should be worn in virtually all situations.
4) is not going to affect operation of the SRS, but you should not count on the results of this modification for SRS protection alone which is designed to function with a seat belt being worn.
5) worked for me on a 2011 Hyundai Santa Fe 2.4 Auto AWD GLS. The www.hmaservice.com
website has good documentation for schematics but the wiring colors did not match.
6) is for non-powered and non-heated driver seat. I'm not aware if this is an important differentiator.