Toyota's (and by proxy the Vibe) are the worst on the market for beeps. Door open key in the ignition, Key in the ignition with no seatbelt, Driving over 5mph with someone or something in the passenger seat, Traction control going off, ABS going off. Key out of ignition headlights on this is the only useful one.
I have what some may call an aversion to things beeping. Many things set this off: Cell phones, default computer sounds, and automobile beeps. Today I finally did something about it, and I took pictures. When I read about the "How To : Disable Seat belt Beep" on Matrixowners, I was so happy.
viewtopic.php?f=28&t=14893 . Sadly this fix did not eliminate all beeps. Edit: 7/7/19 Double sadly MO is gone, too, updated the link with a genvibe post.
A while back I was developing white faced gauges for the Matrix/Vibe, that didn't go very well due to the dark plastic that covers the gauges. Luckily, I hung on to the 03-04 and 05-08 gauges I purchased on eBay, and was able to test this hack on these without damaging the cluster in my Vibe.
Disclaimer : As with any modification this may void your warranty, and I am not responsible for the damage you may do to your automobile. Always wear your seat belt, Click-it-or-Ticket. I always wear my seat belt.
This modification will remove the button speaker on the back of the Gauge cluster that is responsible for all the beeping listed above. On a difficulty scale of 1 to 5 it's a 2
I have verified this mod can be performed on 03-04 Matrix/Vibes (all models), and 05-08 Matrix/Vibes (all models). This mod may also work on other Toyota cars such as the Corolla, Celica, and MR2. If you verify this fix works on other vehicles please post up.
Now without further delay.
Remove the gauge cluster from the dash. Lower the Steering wheel to the lowest setting, and lock it in place. On a Matrix/Vibe pull on the round chrome shroud that surrounds the gauge cluster (it will come off easily). There is one Philips head screw, that needs to be removed at the top center. There are two clips that hold the gauge cluster in place, on the far left and right bottom. With a flash light you should be able to see them. With your screwdriver push the top of the clip, and it should come loose. The arrow below shows where to push on the clip.
When the cluster is free, move the bottom forward and the top back. Then disconnect the wiring harness (03-04 has one harness, 05-08 has two). Then remove it from the dash, and take it to a well lit place.
On the back there are 10-11 screws that need to be removed. Don't take the front plastic off, we don't want to move the needles around, they are a pain to calibrate.
Here is the 03-04 Back
Here is the 05-08 Back
Now that the back is off it should look like this.
The Black round speaker looking thing is what we are going for. Take a flat head screw driver, and carefully pry it up on one side.
Then do the same on the other
Once both sides are up a bit the speaker will pull right off.
Next bend the leads down, just make sure they are not touching.
Reassemble everything, making sure all screws are used.
Installing the cluster is the reverse of the removal.
There you have it, just make sure to turn your headlights off, and live beep free.
Edit: 7/7/19 moved images to imgur.