Author Topic: Messed Up TPM Replacement, Can It Be Saved?  (Read 919 times)

ElPolloDiablo

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Messed Up TPM Replacement, Can It Be Saved?
« on: September 24, 2025, 01:37:06 PM »
I installed a new TPM bought from BMW in the front wheel of my R1200RT LC. These are new "sealed" Schrader units.

Being the idiot that I am I decided the "PN:" followed by seven digits stamped on the sensor was the new sensor identification number so I input that to learn the sensor manually. Turns out it isn't since there's no feedback coming from the front sensor, but no error either. And that's about it, I have no idea what to do now. No, I don't own a "wake up tool" nor have I any intention to buy one to use it once in 8-9 years.

If anyone can help I'll be grateful, otherwise I will just try to replace the battery in the old one and take the loss on this sensor.

Thanks

TRJeff

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Re: Messed Up TPM Replacement, Can It Be Saved?
« Reply #1 on: September 25, 2025, 02:08:36 AM »
you will need a way to wake up the sensor, wake up tool is very inexpensive. if not you can try, ride bike, needs to be over 20 mph, this should wake up sensor  and as quickly as you can use GS911 and select front or rear for the new sensor and learn selection. should work.

ElPolloDiablo

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Re: Messed Up TPM Replacement, Can It Be Saved?
« Reply #2 on: September 25, 2025, 11:54:43 AM »
Thanks. I tried both wake up methods (riding and fast deflation) and neither worked. I suspect a defective sensor but I am waiting to hear from BMW about that.
Old sensor is installed in the meantime. It works but is seriously out of calibration (about 0,2 bar) but better than nothing.

One detail I omitted is I have been having problems connecting to the GS911 cloud since Monday, I always get an error message so I am really limited in what I can do now. I suspect our "Piracy Shield" is causing problems again.

botus

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Re: Messed Up TPM Replacement, Can It Be Saved?
« Reply #3 on: September 30, 2025, 03:34:27 PM »
if you have stored the wrong set of digits on your bike - the sensor will still wake as you ride (but you'll not know it) >40mph for a few miles is a safe bet....

then you need a spare KEY !!!   you need to get at the diagnostic socket without turning off the Key - connect up and code the correct details you should be able to see now the senor is alive - you get around 15mins from stopping the engine - I forget I think the kill switch causes the same mess up as Key off - I just stall the bike to shut the engine up and to stop it melting
« Last Edit: September 30, 2025, 03:37:02 PM by botus »

TRJeff

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Re: Messed Up TPM Replacement, Can It Be Saved?
« Reply #4 on: September 30, 2025, 07:40:19 PM »
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ElPolloDiablo

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Re: Messed Up TPM Replacement, Can It Be Saved?
« Reply #5 on: October 24, 2025, 01:30:40 PM »
I am giving the final update.

The original sensor was defective: everything failed, including a borrowed wake-up tool. The sensor was recognized by the TPM system but failed to give any readings. Whatever happened is above my skill set but it almost drove me insane.

BMW replaced it on a no questions asked basis: less than 5 seconds with the aforementioned borrowed wake up tool and it was immediately recognized and learned by the bike using GS911. Works perfectly and seems a bit more accurate than the original unit. We'll see how long it lasts.

Thanks everybody.

botus

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Re: Messed Up TPM Replacement, Can It Be Saved?
« Reply #6 on: October 24, 2025, 01:41:43 PM »
never buy OEM - its designed to fail junk - the world has turned - Chinese trash is now often far higher quality

germany today is just all about funding ww3 along with their best mates in the UK
« Last Edit: October 24, 2025, 05:02:35 PM by botus »

ElPolloDiablo

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Re: Messed Up TPM Replacement, Can It Be Saved?
« Reply #7 on: October 24, 2025, 04:30:30 PM »
Urgh? This is literally the same Pacific Industrial tyre pressure sensor installed in most motorcycles now, it just has a BMW stamp instead of a Kawasaki or Triumph one.

A single defective unit can happen to anybody: BMW didn't try to wriggle out of it and honored their warranty commitments to a fault, even if they could just tell me I needed to have it installed by an official dealership. GS911 worked as well as always and it just wasn't its fault. In the end it's solved, just a warning to never doubt GS911. 

botus

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Re: Messed Up TPM Replacement, Can It Be Saved?
« Reply #8 on: October 24, 2025, 05:07:22 PM »
so you haven't considered batches that deliberately have lower durability - and go direct to markets that have a lot of mugs.  And others, that are more durable going to markets where a given manufacturer has yet to land the marketing let madness where fools will buy it regardless?


Borgia

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Re: Messed Up TPM Replacement, Can It Be Saved?
« Reply #9 on: October 24, 2025, 06:33:46 PM »
The BMW sensors are made by Schrader. Schrader is a quality brand. Schrader manufactures in several countries but the ones most commonly found on BMW motorcycles are made in the UK.

If you buy a sensor from a BMW dealership you will pay too much.

Replacement Schrader sensors for BMW motorcycles are available on the aftermarket as the 3141M but aren't sold in North America but can be purchased from the EU.

You can also buy the Schrader 33900 sensor which, when programmed as if it was going to installed on a 2009 Saturn Astra, will work on BMW motorcycles.

Note that both of the aforementioned sensors come in a different form factor than the old "banana style" sensors. This is also the case with any new replacement sensor from BMW.

All this is explained at greater length in the following article:
https://valleybmwriders.com/media/kunena/attachments/1063/SchraderReplacementSensorsV2.pdf
Hey BMW: No service manual = no new bike.