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Old 09-23-2009, 01:54 PM   #127
CTScott
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Originally Posted by bronsin View Post
Hmm I bought a rim for my Yaris with a useable tire but no sender. What happens if the warning light goes off! Ok to put tape over it?
The light will come on eventually. It doesn't affect anything other than being annoying. You can tape it, or do the mod.
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Old 09-23-2009, 02:09 PM   #128
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Now that I read it and understand it, the mod looks good!
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Old 09-23-2009, 02:12 PM   #129
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Now that I read it and understand it, the mod looks good!
Make sure you look at post 115. It was my 3rd iteration of the mod, and the simplest.
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Old 09-23-2009, 02:28 PM   #130
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Yes I read the whole thing through a few times. (and I may read it some more!) Im used to buying $300 cars and fixing them (well...$300 cars 20 years ago) but this ECM stuff I have no clue. Thanks for figureing this out !
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Old 09-30-2009, 06:33 PM   #131
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Thank you for the simple TPMS mod, CTScott!
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Old 09-30-2009, 09:14 PM   #132
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Hi CT, I had my sensors moved to my aftermarket rims for non snow months. My factory steel rims have the snows with no sensors. In Summer no prob, but in winter the TPWL will start flashing for less than a minute then shut off until I restart the car. Sometimes it will come on and sometimes it wont but it always goes out after flashing. Is this typical?
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Old 09-30-2009, 09:18 PM   #133
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Oops I said TPWL (tire pressure warning light) when I meant TPMS.
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Old 09-30-2009, 09:27 PM   #134
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Originally Posted by birdman View Post
Hi CT, I had my sensors moved to my aftermarket rims for non snow months. My factory steel rims have the snows with no sensors. In Summer no prob, but in winter the TPWL will start flashing for less than a minute then shut off until I restart the car. Sometimes it will come on and sometimes it wont but it always goes out after flashing. Is this typical?
That's normal. If you store your summer tires somewhat near where you park the car, it will communicate with the sensors and be happy for a while. Once it is away from the tires for a bit, it will realize that it hasn't talked to the sensors and will turn the light on.
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Old 09-30-2009, 09:33 PM   #135
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Even when I go on long winter trips for several days the light will often start flashing for less than a minute and always go out. Normal too?
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Old 10-02-2009, 08:15 PM   #136
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There are so many really smart people here clearing every hurdle placed before them that I am awe struck by it. I am very fortunate to have stumbled into this awesome community.
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Old 11-05-2009, 08:02 PM   #137
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I've bought a lot of "stuff" I intended to add/mod to my Yaris, this was the first mod I did. To me it is mandatory. The TPMS is a sales gimmick, nothing more. The batteries in the sensors will eventially go bad, you must have have the ability to swap rims without an idiot light.
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Old 12-18-2009, 01:52 PM   #138
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Here is another way to implement CTScott's mod to make the TPMS light stay off no matter what. It's electrically identical, quick, easy and leaves no readily observable evidence of "tampering". It's also a reversible mod. You'll need a small side-cutter, a soldering iron and about 10 minutes of time.

The three pictures should say it all.
Attached Images
File Type: jpg DSCF0006_1.JPG (168.8 KB, 710 views)
File Type: jpg DSCF0009_1.JPG (145.8 KB, 686 views)
File Type: jpg DSCF0020_1.JPG (175.2 KB, 688 views)
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Old 12-18-2009, 01:59 PM   #139
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^Nice!

Totally out of view for those worried about it being seen when they go in for warranty work.
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Old 12-20-2009, 12:44 AM   #140
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I gotta do this .. mine still doesn't work right and this is with the resistors. Not working for some reason, but Domo blocks the view of it so it's not really annoying.
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Old 12-21-2009, 09:18 PM   #141
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thank you CTScott and Rick!!

Thanks to them, I was able to make mine with a switch.



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Old 08-01-2010, 08:42 PM   #142
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Thumbs up thank you so very much!

I did the latest tpms light disable as per post by yarisugi. I got a small DPDT from Radio Shack. Good thing I had a tiny pair of side cutters. I can flip the switch back and forth with the correct results every time. I did this and then put on some 14 x 6 BBS wheels on with 185/60-14 wheels and tires. The car handles much better than with the 15" steelies. I can chirp the tires now at will. It likes the smaller tires and lower gearing. Ya the speedo is off now, but I get 15k a year on my lease. Thanks to all from this post for the awesome, accurate work and reporting. I'll try and post a photo of the car soon.
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Old 08-01-2010, 10:54 PM   #143
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I'm finally ready to do this fix. The switch option requires that the snipped brown wire that is attached to the connector be grounded, while the upper part is wired to the switch. Right?
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Old 08-01-2010, 11:22 PM   #144
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I'm finally ready to do this fix. The switch option requires that the snipped brown wire that is attached to the connector be grounded, while the upper part is wired to the switch. Right?
No, there is not a ground connection. With the switch, you are either leaving the brown wire connected or connecting it to the +5V line.
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