Where to get TPMS sensors

[Mistacat]

The wake-up tool works by sending a 125 KHz signal to the sensor that wakes it up.

A great many sensors use 433 MHz but there are also a great many different protocols. BMW's motorcycle protocol is almost entirely unique.


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My wake up tool EL-50448 / OEC-T5 works on 433 MHz and wakes up the original BMW sensors as well as the aftermarket ones.

Early days I bought 4 Chinese sensors they came without codes , I took them to a mate who has a tyre business and had just purchased the latest very expensive tool for reading sensors and recoding blank aftermarket sensors .
He could only get the codes from 2 of the sensors ( which worked) the other 2 showed letters as well as numbers in the codes. I put these 2 in a drawer and put it down to experience.
At a later date and now having the wake up tool I deleted the existing codes from the ECU with the GS911 and woke these 2 sensors up. The correct codes then wrote themselves to the ECU.
So it seems the expensive the garage kit was not designed to read the codes from all of these sensors, just let the ECU and wake up tool work its magic.

 

[RadioFlyer]

My wake up tool EL-50448 / OEC-T5 works on 433 MHz and wakes up the original BMW sensors as well as the aftermarket ones.

Early days I bought 4 Chinese sensors they came without codes , I took them to a mate who has a tyre business and had just purchased the latest very expensive tool for reading sensors and recoding blank aftermarket sensors .
He could only get the codes from 2 of the sensors ( which worked) the other 2 showed letters as well as numbers in the codes. I put these 2 in a drawer and put it down to experience.
At a later date and now having the wake up tool I deleted the existing codes from the ECU with the GS911 and woke these 2 sensors up. The correct codes then wrote themselves to the ECU.
So it seems the expensive the garage kit was not designed to read the codes from all of these sensors, just let the ECU and wake up tool work its magic.

Your wake-up tool sends a 125 KHz signal. The sensor transmits on 433 MHz.

The combination of letters and numbers you saw is the sensor ID in hexadecimal. Just convert it to decimal to enter it using a GS-911 or the Motoscan app.


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[Mistacat]

I did not realize that the wake up frequency was so low, just zapped the probe on the scope with the wake up tool and you are quite correct 125 KHz.
Every day is a school day.

 

[MWH]

I seem to be the unluckiest person alive with technology! I bought a pair of 3141m sensors from Autodoc,arrived today so went to play with them. No codes on the box (autotechnik24 put hex codes and 7 digit code on sticker on box) so hoped the wake up tool and gs911/motoscan would do the job.

No, they didn't. I tried programming them to B set of wheels and no luck with either the 911 or MS. Cleared the A set of codes and tried them in there and again no luck with either.

Pretty sure I'm not doing anything wrong!! I'm doing it with the sensors not fitted to the wheels, just out of the box which is how I did the old Aliexpress ones.

 

[MWH]

Another couple of hours messing about and nothing. I'm starting to wonder if my bike is too old and something has changed.

I ordered them on the part number but found info on other sites and Schraders and it lists them for 2010 on which is the start of the twin cams.
Has anyone got the 3141M's working on a 2009 or earlier bike?

Can't believe I'd have 2 faulty new sensors. There could be fault with the wake up tool but no real way of checking that.

Stumped.

 

[MWH]

MartinK, can I ask how you did yours exactly? I emailed Autodoc and their "techs" told me they need programming at a car tyre place. TIA.

 

[MartinK]

So, I only change the rear wheel sensor, the front had been on a while and was working correctly...
I held the new tpms close to the rear of my bike. I had my 911 plugged in. I woke the new sensor with the wake-up-tool, and the 911 recognise the new sensor within a few seconds. Job done. My bike is a 2018 GS with TFT, one of the last 1200s before the 1250. It had the old style sensor (on alloy wheels) when I bought the bike. It now has Schrader tpms sensor on spoke wheels from a later 1250

 

[MWH]

Thank you, seems to put pay to the idea they need programming first.

 

[casbar]

Thank you, seems to put pay to the idea they need programming first.

They don't need programming first, I fitted a rear to a 2015 bike, the newer style but the 22 on style. I used the wake up tool (no codes on the body) then my local garage plugged in their computer and the bike recognised the sensor, all good.

 

[MWH]

Cheers for your reply Was it a car garage or a Motoradd one?

 

[casbar]

Cheers for your reply�� Was it a car garage or a Motoradd one?

It was an independent motorcycle garage, that is not BMW specific. He did need my waking up tool though.

 

[MWH]

Thanks again.

 

[MWH]

Well, success at last. Tried a few more times and nothing changed. For the sake of a fiver I ordered a new EL wake up tool from ebay and lo and behold worked straight away. Now I have the 2 codes and they're allocated to the bike.

Wanted to get rid of the yellow light, I have... its now red lol. Only as they're not on the wheels yet as waiting for the valve stems to arrive so showing 0 bar.

The Old EL tool green TX light was flashing as it should, had a fresh battery in case of power issues. So if you have been having the same trouble as me, try another wake up tool

 

[Skudd]

My sensors went a while ago, put new batteries in and all was well for a bit, then they went fubar so I have a nice triangle on display.
Now I'm in the mood to getting new sensors, I did get a wake up tool, but there are no instructions on how to use it. How do I use it? where do I point the thing to wake stuff up? Should I do one wheel at a time so as not to overload the system?

 

[MWH]

Put it as near the sensor as possible and press the button while motoscan or Gs911 is in the sensor learning mode, if they're in the tyres already up against the side wall is best.

 

[RadioFlyer]

Sounds like you bought programmable sensors rather than the pre-programmed Schrader 3141M.

Don't despair just yet. Ask the chap if he can program the sensors as if they were being installed into a 2008 - 2010 Saturn Astra. This is said to be one of the very few other vehicles that use the same protocol as is used by BMW on motorcycles (pre-2022).

I have since obtained a Schrader 33900 programmable sensor and programmed it for a 2009 Saturn Astra (there are others that should work as well) and verified that it will work on pre-2022 BMW motorcycles. This would appear to be the least expensive made by Schrader option for replacing the OEM units.

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[RadioFlyer]

I did not realize that the wake up frequency was so low, just zapped the probe on the scope with the wake up tool and you are quite correct 125 KHz.
Every day is a school day.

Block diagram of a typical tire pressure sensor:

 

[short001]

I have a 2010 30th Anniversary 1200GSA and the rear TPM is working intermittently. Can someone please post a link for a replacement that will work on my bike please. I have read all the threads I can find, but still not 100% sure what I need. Thanks in advance.

 

[Baza 07]

Hi all,finally i've finshed my TPMS quest,with the help of,,,, Ted Motorevive Wirral,,,,,OBD2,,,,,Wake up tool
and not forgetting good olde,,,,Aliexpress,i'm now a happy beemer owner,,,lol
Thanks for all the advice fella's till the next time

 

[Ibex]

I reported buying a new pair of Schrader sensors - direct from Schrader - in April of last year. The front sensor failed yesterday after 17 months - less that 10k miles. I am not in the mood to buy any more (and certainly not Schrader ones!) I consider my next action is to somehow immobilise the TPMS system completely. Is there a proven method to achieve this?