Are there any negatives or downsides electrically to doing this? Does it add drain to the battery or generate extra current in places that don't normally get it?

very easy, and work good thank's a lot

On my first 04, brand new from dealer, had this light come on all the time even when enough pressure all around. They had to replace the TPMS module to correct the problem. After bringing in 3 times under 1000 miles.

Fastest mod, took literally 5 minutes! Thanks for the write-up.

Well apparently I don't need to do this mod afterall. I just ditched all the TPMS sensors (except the spare...haven't gotten a new tire for it yet) when I installed new tires and my TPMS light hasn't come on. It's been over 100 miles.

Give it a day there WXman, the monitor is probably still looking for them to compute the pressure. It will give up and the light will come on then. Mine did this when changing my rims.

This is why I did this mod, due to 2 sets of rims.

Possibly. But I did this on Friday. So I've driven the 4R for 3 days already and it's still not on. I think that's odd. Would be awesome if the ECU is smart enough to know that if ALL of the sensors disappear it was because the owner means for them to. We'll see..

Curious, when you say you ditched them, are you meaning thrown them away or are they still at your house/garage?

I know they have a battery in them. I think I seen where the light will come on when dead. Just curious, as stated, I have both sets of rims at my house and this light used to hesitate to come on for a day or 2, when I leave, ( non installed ones).

No, mine are gone. I sold them with the wheels to somebody else. I hope my TPMS light stays off. I'm curious about this too.

If it stays off it was probably not working right anyway...

Well, when I bought this 4R back at the end of winter, the light was on. Turns out that the spare tire was low. After that was aired up the light went off. So the system was working OK.

Today, it's day 4 with no sensors in place and the light still isn't on. I'm super happy about this. Apparently the jap engineers were smarter than the U.S. ones and programmed the system to look for all of the sensors missing and if so, let it be. A lot of people switch to a dedicated winter set of tires and this will mean you don't need to worry about TPMS. Very good design and I'm happy my light is off with no mods needed.

My guess is that later years, being under more government scrutiny, were changed so that the light is more likely to be on than off.

I went to do this a while back on my 05 and the wires where different colors. So I waited until last spring when I changed the color on my dash by switching out the LEDS (which is awesome in white) and I pulled that damn LED out. I literally walked it all the way to the outside garbage can and thew it away in anger. lol

I also am happy to report my light has not come back on since.

Just did this to my 04 SR5 4x4... Worked as described, done in 5 min or less... So glad I don't have to stare at this light anymore! And since I've got aftermarket rims without the sensors anyways, the whole concept of the light is useless for me. Thanks for the write up!

Eh... I don't think that's how its supposed to be, I'll check and see if TIS has an "official" explanation. But maybe you just got lucky and/or the TPMS just wasn't working right to begin with?

If TPMS wasn't working right to begin with, wouldn't it default to being ON?

And like I said...it was working because I had a light originally that went out when I aired up my spare.

My light still isn't on. It's obvious to me now that this mod won't be needed for my 2004. If one sensor or two maybe were missing, it'd be throwing a light. But apparently with all 4 gone at once the ECU knows what's up. I'm happy.