Tpms wake up issues

[mpgscott]

Today I tried to learn the group b tpms sensors. So using my gs911 I made sure slots b were clear.

Tried the learn function and it keeps saying negative response from controller. Using the wake up tool it’s flashing away and I recall doing this before and it was straight forward.

I had the ctek charger plugged in but voltage was down to 11.1v

So I ended up coding in the new values id to the two b slots.

However before I put new tyres in I really want to see they work.

Anyone know on the configuration to read the sensors how I make it read slit b sensors as opposed to the current slot a values? I couldn’t see a way.

 

[Mistacat]

I normally clear the sensor i/d`s in slot B using a GS911, then use the wake up tool and it will write the codes in.
I would delete the code from slot b front then wake up that sensor, then do the same for the rear.
Obviously making sure the wheels with slot A sensors coded are a long way away from the bike.

 

[mpgscott]

That’s maybe my issue. I still have the slot A wheels on the bike, the new spoked Slot B wheels are off at the moment awaiting tyres.

So I’ll pull those wheels and try again..

 

[Mistacat]

You do not need to have the wheels fitted as long as they are near the bike.
In theory there should not be a need to move set A far away from the bike when coding set B it is just something that I do.

 

[Mistacat]

Wake up tool, my unit seems to have quite a high current drain.
If I try a cheap battery it does not work or not very well, The light flashes and the low battery light does not illuminate, it seems to be heavy on battery's.
Put a Duracell or similar quality in it works fine.

 

[Flipfly]

I had problems with mine.

I programmed them with the gs911 and tried a wake up tool and just couldn’t wake the sensors.

In the end we put the tyres on, somewhere in the 15 miles home they both kicked in to life

 

[botus]

tape to the inner side of the rear wheel of another bike that has a centre stand - a quick rev and you have 15 minutes to un-tape and place next to and code to the correct bike

I gave up with batteries and recalcitrant wake up tools 5 years ago - never looked back

 

[mpgscott]

Wake up tool, my unit seems to have quite a high current drain.
If I try a cheap battery it does not work or not very well, The light flashes and the low battery light does not illuminate, it seems to be heavy on battery's.
Put a Duracell or similar quality in it works fine.

It’s a Duracell that’s in and new green light flashes and like you no low battery light. I wonder if a radio on Am would pick up the output I might try it along with another battery to rule that out.Cheers

I’ve added the codes via gs911 to group b marked on the sides of the new sensors, just be nice to know they work prior to fitting tyres.

 

[Mistacat]

The wake up frequency of these 433Mhz wake up tools is 125Khz , I think that you will find this is below the band width of domestic shortwave radio`s.
I held mine near an oscilloscope probe to check it worked.
You may have a friend with an oscilloscope or a mustimeter with a scope feature, or if you are passing an electronics repair shop it would only take a couple of seconds to check it works.
I sometimes use the wake up tool to check the tyre pressures before setting off, it is quicker than using a tyre pressure gauge.