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Author Topic: Using TPMS learn tool EL-50448  (Read 1821 times)
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slacorte
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« on: February 08, 2017, 12:12:53 PM »

I purchased (online) an EL-50448 learn tool to reset the TPMS on my 2012 Equinox LT to my new tire locations. I have made several attempts to get this tool to work but have NOT been successful. I put the vehicle in learn mode and it is verified both on the info console as well as the two horn beeps. When I run the EL-50448 tool over my left front tire (driver side front), I position the tool so that the antenna is near the valve stem and pointing up. I press the button the EL-50448, observe the blinking green LED for about 5 seconds followed by a single blink of the red led. The 9 volt battery is fresh, new and should be OK.  Any thoughts what might be wrong? Does this tool seem to be working properly? Could it be an issue with the car?

I really appreciate any responses! I am stuck.
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rbarrios
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« Reply #1 on: February 08, 2017, 12:34:37 PM »



this will NOT work for me....




This WILL work for me. lay the back of the sensor on the tire---

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2013 Equinox  LT1 3.6L V6 FWD -   55,000
2010 Traverse LT1 3.6L V6 FWD - 123,000
2003 Trailblazer LS  4.2L I6 RWD- 180,000
13NOX
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« Reply #2 on: February 08, 2017, 12:40:07 PM »

Follow what Rbarrios said. This info is from my service manual:..... 7.Place the relearn tool against the tire sidewall, near the valve stem. Then press the button to activate the TPMS sensor. A horn chirp confirms that the sensor identification code has been matched to this tire and wheel position.
8.Proceed to the passenger side front tire, and repeat the procedure in Step 7.
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2013 Nox 2.4L 1LT AWD
redbird
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« Reply #3 on: February 08, 2017, 09:54:25 PM »

I always put the end of the antenna of the tool square against the tire itself as close as possible to the valve, right next to the wheel edge. This way the tool is transmitting through the tire, not the wheel. The sensor is mounted on the inside of the wheel, not at the exposed end of the valve. Works first time every time for me.
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14 Blue Equinox 1LT 2.4L FWD

1999 White C5 Coupe
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« Reply #4 on: February 09, 2017, 06:36:11 AM »

I have used this tool without problem on the following:  2008, 2011 & 2012 Impala LTZ models; 2013 Equinox; and 2014 Impala 2LTZ.  After placing the vehicle in TPMS learn-mode, I have always placed the black antennae against the tire sidewall, adjacent to the valve stem.  I have never had a problem with the sensors "learning" with the first attempt.

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MGMSEQUINOX
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« Reply #5 on: February 09, 2017, 11:24:36 AM »

I have the same tool but I allways put the antenna ( black round part on end)  right where the tire meets the wheel at the valvestem and it allways works for me......like where the red dot is ...
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slacorte
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« Reply #6 on: February 10, 2017, 11:49:01 AM »

Thanks for all your responses. I tried all the different positions you suggested and still the vehicle does not beep. If I were to try the back left wheel first, would the vehicle respond? My thought is that maybe just this front sensor is not responding to the command from the tool. I know it would screw up the tire order from the TPMS perspective. I am hoping that this would be a way to rule out whether its a vehicle or tool issue.

Thank You!
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JayT2014
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« Reply #7 on: February 10, 2017, 12:12:53 PM »

If the horn beeps twice  when you start at the driver side front tire that seems to indicate the  TPM sensor is working and that the vehicle is seeing that signal.  If not. . . then maybe a bad sensor?
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2015 Equinox LTZ 3.6L FWD Champagne Silver Metallic *Build Date 1-08-2015  * * 18,000 miles
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« Reply #8 on: February 10, 2017, 12:54:19 PM »

You could try another tire on your car but two thoughts; Either the tire sensor is bad or the tool itself is. Do you have a friend that would let you try it on their cars tires to verify the tool?
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2013 Nox 2.4L 1LT AWD
rbarrios
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« Reply #9 on: February 10, 2017, 12:57:06 PM »

yes, you can try any other wheel position to see if the vehicle honk/chirps twice.
i

Though if the learning of all 4 goes through-- the wheels would not be in the correct location for the tire pressure display on screen.
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2013 Equinox  LT1 3.6L V6 FWD -   55,000
2010 Traverse LT1 3.6L V6 FWD - 123,000
2003 Trailblazer LS  4.2L I6 RWD- 180,000
slacorte
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« Reply #10 on: February 13, 2017, 05:53:00 AM »

Still no joy. I tried new battery and back tire. Question: Is it normal for red led to flash after green led stops flashing? Thank you
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JayT2014
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« Reply #11 on: February 13, 2017, 05:56:43 AM »

Send it back, get a refund, buy one from another vendor on Ebay. There are at least 6 or 8 sellers.

Also some on Amazon. . . easy returns there.
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2015 Equinox LTZ 3.6L FWD Champagne Silver Metallic *Build Date 1-08-2015  * * 18,000 miles
rbarrios
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« Reply #12 on: February 13, 2017, 08:20:36 AM »

Still no joy. I tried new battery and back tire. Question: Is it normal for red led to flash after green led stops flashing? Thank you

On this video I made--- I do not see my red LED flash...



http://vid837.photobucket.com/albums/zz293/rbar70/2010/MOV05207.mp4
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2013 Equinox  LT1 3.6L V6 FWD -   55,000
2010 Traverse LT1 3.6L V6 FWD - 123,000
2003 Trailblazer LS  4.2L I6 RWD- 180,000
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« Reply #13 on: February 23, 2017, 09:32:28 PM »

I know you said you tried a "new" battery but was it really new and fresh or another unused battery you had? I ask because my EL-50448 did the same as yours, flashed green, then red came on. I went and bought a new alkaline battery taking care to check the date code. Now it works like a champ.

If you truly bought a brand new alkaline battery (Energizer or Duracell, stick with quality) then you indeed have a defective unit.
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2013 Equinox 2LT ISC AWD 3.6 V6 Granite Black Metallic
JayT2014
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« Reply #14 on: February 24, 2017, 05:21:06 AM »

I know you said you tried a "new" battery but was it really new and fresh or another unused battery you had? I ask because my EL-50448 did the same as yours, flashed green, then red came on. I went and bought a new alkaline battery taking care to check the date code. Now it works like a champ.

If you truly bought a brand new alkaline battery (Energizer or Duracell, stick with quality) then you indeed have a defective unit.

Rayovac 9 volt batteries are good too. Used them for years and have them in every room smoke detectors. Some have been in them for +5 years and still good.
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2015 Equinox LTZ 3.6L FWD Champagne Silver Metallic *Build Date 1-08-2015  * * 18,000 miles
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« Reply #15 on: February 24, 2017, 05:29:06 AM »

Bought new tires yesterday and my tool worked great!  I place the black tip of the tool on the tire, not the rim or valve stem, right where the sensor is supposed to be at the end of the valve stem.

One other thought...  according to my research, the batteries in the sensors life span is 3-5 years.  If they're the original tpms sensors, they may need replacing.  Even if they were working fine, it's possible it takes a little more juice than they have left in them during the reprogram mode... I know I'm reaching here, but I'm stumped on why it's not working too...
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rbarrios
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« Reply #16 on: February 24, 2017, 09:08:11 AM »

just to be safe- when I recently replaced my tires---
I also replaced the TPMS sensors. I had no issues but age wise-- why risk it.
Bought 4 on ebay for $50-$60 something.
Had them put on when the tires were replaced. Shop added $20 total for putting them on ($5 per tire).


On the flip side--- sis replaced her tires but did not replace TPMS.
As of this week- shes getting a TPMS message. Most likely age related.
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2013 Equinox  LT1 3.6L V6 FWD -   55,000
2010 Traverse LT1 3.6L V6 FWD - 123,000
2003 Trailblazer LS  4.2L I6 RWD- 180,000
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