Author Topic: Noob needs TPMS clarification  (Read 13820 times)

Offline SmittyRider03

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Noob needs TPMS clarification
« on: April 29, 2013, 09:50:07 am »
I have read through many posts and don't feel I have the exact info I need, and I need it soon!

2008 C14, currently at my local shop getting new tires, front rotors/pads, and Murphs 90 degree valve stems...

Like many other folks my sensors flash the annoying warning light almost every cold-start morning. My questions are as follows, and any and all opinions are greatly appreciated!

1. I believe the batteries are still ok - should I just leave the sensors in for now or will the warnings get worse as they die?

2. If I leave them in and let them die, the way I understand it is I will just get dashes for tire pressure and NO flashing warning?

3. Do I just have the shop take them out all together right now while they have tires off? I have never had TPMS before and frankly have never looked at it in the 2 years I have had the bike now.

    3.1 If the sensors get removed, will Murphs valve stems work without them?

        3.2 If the valves work with the sensors removed all together will I just get dashes for tire pressure and NO flashing warning?


Just trying to get to the bottom of this, may be helpful for others as well I hope.

Thanks for the help!!
Four wheels move the body; two wheels move the soul...

Offline MrPepsi

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Re: Noob needs TPMS clarification
« Reply #1 on: April 29, 2013, 10:21:50 am »
1.  I would leave them in. Once they save you once, you will be in their debt for life. They are awesome. Had a massive flat while riding one day, two up in 95 degree weather. Could have been a very bad outcome if I hadn't seen the PSI warning.

2.  I would assume that would be true as it will just default to not being able to see the sensors. (Speculation on my part)

3.  I would not
3.1  Yes, they do not touch the valve stems. (fact)
3.2  Refer to 2.
Brent Johnson 
2009 C-14 "Razzi"

Offline Flienlow

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Re: Noob needs TPMS clarification
« Reply #2 on: April 29, 2013, 10:38:17 am »
Sorry, but how do these work? Is there a battery in the valve stem assembly?  I bought my connie used, the bike had not been rode in while. I took it out for the customary test ride and and recieve a low battery warning. After about 20 minutes of riding it went a way and has not returned.

Why not just replace the batteries while the tires are off? Or is it not that simple?

Offline SmittyRider03

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Re: Noob needs TPMS clarification
« Reply #3 on: April 29, 2013, 10:54:08 am »
Sorry, but how do these work? Is there a battery in the valve stem assembly?  I bought my connie used, the bike had not been rode in while. I took it out for the customary test ride and and recieve a low battery warning. After about 20 minutes of riding it went a way and has not returned.


Why not just replace the batteries while the tires are off? Or is it not that simple?

Most cold mornings will make the warning light come on until the air warms up, then it will go off. Very annoying in my opinion!

The sensors do have batteries which are soldered in. There are how to's on replacing the batteries in the forum. The sensors themselves are not cheap, upwards of $175 each.
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Offline MrPepsi

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Re: Noob needs TPMS clarification
« Reply #4 on: April 29, 2013, 10:54:16 am »
The system that the C14 uses has nothing to do with the valve stem.
Yes the batteries can be replaced, but its not as simple as just popping one out and putting a new one back in. Do a search on TPMS battery replacement and there are a few threads about it.
Brent Johnson 
2009 C-14 "Razzi"

Offline Flienlow

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Re: Noob needs TPMS clarification
« Reply #5 on: April 29, 2013, 03:41:01 pm »
Thanks Guys.

Offline cablebandit

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Re: Noob needs TPMS clarification
« Reply #6 on: May 01, 2013, 10:39:38 am »
Just replace the battery when you change the tire.  I just did my rear....maybe 5 minutes since it was my first time.   :rotflmao:

Offline Tim

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Re: Noob needs TPMS clarification
« Reply #7 on: May 02, 2013, 12:42:09 am »
OK CB, you're going to have to explain yourself. Everybody else is cutting housings in half just to get to the battery.
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Offline Conrad

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Re: Noob needs TPMS clarification
« Reply #8 on: May 02, 2013, 05:10:58 am »
Just replace the battery when you change the tire.  I just did my rear....maybe 5 minutes since it was my first time.   :rotflmao:

OK CB, you're going to have to explain yourself. Everybody else is cutting housings in half just to get to the battery.

Exactly. I've never changed the battery in my TPM but there ain't no way in the world that this is just a 5 minute job. And I say that as a guy who's been repairing electronics for over 30 years.
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Offline maxtog

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Re: Noob needs TPMS clarification
« Reply #9 on: May 02, 2013, 05:41:28 am »
OK CB, you're going to have to explain yourself. Everybody else is cutting housings in half just to get to the battery.

+1
I thought the same thing when I read what he wrote.  Perhaps one could get it down to 5 min if one has done the procedure several times already and had all the tools and supplies ready and waiting.  Otherwise, I was thinking more like 15 to 20 min.
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Offline cablebandit

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Re: Noob needs TPMS clarification
« Reply #10 on: May 02, 2013, 07:34:31 am »
You only need a small torx bit and a soldering iron once you have the unit unscrewed from the wheel.

Peel back the FCC label and unscrew the torx screw.



Pull off the back by releasing three plastic tabs. (one on the round end and two in the hole.



The board just sits in there. Pull it out.



Fold the tabs of the new battery over to the board contacts and solder them on.  (Note polarity)



Profit


Offline Jay

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Re: Noob needs TPMS clarification
« Reply #11 on: May 02, 2013, 12:35:10 pm »
You only need a small torx bit and a soldering iron once you have the unit unscrewed from the wheel.

- Peel back the FCC label and unscrew the torx screw.

- Pull off the back by releasing three plastic tabs. (one on the round end and two in the hole.

- The board just sits in there. Pull it out.

- Fold the tabs of the new battery over to the board contacts and solder them on.  (Note polarity)

- Profit



Touché!  ;)

That gives you one minute per step after the TPMS is removed.
I agree with maxtog: Seems doable if you've done it before and have all the tools and supplies ready.
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Offline nyconcours

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Re: Noob needs TPMS clarification
« Reply #12 on: May 02, 2013, 12:56:11 pm »
I was told by my dealer when the bike was new if the low battery comes up, inflate tire to 50PSI, wait 5 minutes while the bike is on (does not have to be running) and reduce PSI to riding presure.

Offline Conrad

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Re: Noob needs TPMS clarification
« Reply #13 on: May 02, 2013, 01:16:01 pm »
I was told by my dealer when the bike was new if the low battery comes up, inflate tire to 50PSI, wait 5 minutes while the bike is on (does not have to be running) and reduce PSI to riding presure.

This has already been discussed and was proven to be inaccurate.
Northern Illinois   Silverdammit '08 C-14 ABS

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Offline Pokey

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Re: Noob needs TPMS clarification
« Reply #14 on: May 02, 2013, 01:37:57 pm »
I was told by my dealer when the bike was new if the low battery comes up, inflate tire to 50PSI, wait 5 minutes while the bike is on (does not have to be running) and reduce PSI to riding presure.


Yet another dealer giving bad information.  ::)
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