Modern Vespa

Hi everyone,

I recently installed the official Piaggio PMP3.0 Bluetooth module (part no. 1D004959) on my Piaggio Liberty 125 ABS Euro 5+ (model year 2025).
Needed instalation kit was used.

I work in automotive so this is all familiar to me.

Here's what works:

The module powers on and connects via Bluetooth to my smartphone (manually)

Music and call icons appear on the instrument cluster when active.

It is visible and operational in the Piaggio MIA app (basic functionality: connection, RPM, voltage, etc.).

However:

❌ The problems:

I have no joystick control over the module from the handlebar controls.

Song titles or caller ID are not displayed.

Any activity (pairing, phone or music menu) operated from scooter does nothing, pushing mode button just exits menu.

I cannot change tracks, accept calls, or interact in any way using the scooter's built-in controls.

PADS (Piaggio Advanced Diagnostic System) does not detect the module at all.

Only ECU, ABS, and dashboard are shown.

The dealership claims there's no firmware update available, and everything seems physically connected properly — since the dashboard sees the module and connectivity icons are shown.

When key is OFF I am able to:

Turn on follow me lights - WORKS
When I tap Seat Opener - nothing happens
When I tap Find Me - seat opens twice

Like there is wrong mapping for digital outputs.

💡 My assumptions:

The module may have firmware meant for a different model (like Aprilia or Beverly), causing it to work partially (Bluetooth + dashboard) but remain invisible to PADS and disconnected from Liberty's joystick functions.

The CAN connection must be working — otherwise the dashboard wouldn't show anything.

🔍 My questions:

Has anyone experienced similar behavior — module works partially but no PADS detection or joystick integration?

Is there a way to force PADS to detect the module, or to manually assign firmware for Liberty 125?

Could the issue be fixed by flashing the correct firmware via PADS (if available)?

Does joystick control only work once the correct firmware for the vehicle is installed?

Any insight or shared experience would be greatly appreciated.

Thanks in advance!

Here you can find pictures of my dash - it is clear that phone is connected but instead of 'MUSIC' these should be a song title displayed.
In this mode joystick does nothing.

I have also attached a screenshot from my mobile device. It communicates normally with Bluetooth module. I just have to manually connect every time.
OK, I have 'solved' this with Routine (when phone detects my headset, it requests pairing with PMP)

think I saw someone with a similar problem when they installed pmp into I think it was a gts. solution was to send the pmp back and get it replaced.

(have looked but can't find the post that I'm remembering, not sure if here on modernvespa or on the german vespa forum or on reddit or ...)

Piaggio dealer said that they will contact Piaggio Italy and will see what can be done. I will probably ask them for another module, depends on an answer we will get.

Hoping that maybe there is some kind of 'forced' firmware update or something...

Found a photo of module I installed, it was manufactured 27.07.2024.

The only thing I can contribute is that when retrofitting the PMP modules, the software version of the vehicle and the PMP module must be compatible, otherwise it will not be recognized. I have not yet read about a partial function in this context. What would be worth a try, if this has not yet been tried, is to first update the vehicle with PADS and then try again to address the PMP module via PADS (and, if available, to update this as well).

If I recall correctly, PADS detected 3 ECU's - ECU, ABS and DASH.
And technician told me that there were no updates at the moment.
PMP was not detected.

This is some info from SteelBytes app.
Is this firmware info or something similar/helpful?

2.25,2.0 Is the firmware/hardware version of the pmp3 module. P.A.D.S should be able to update this but I understand you have checked

147 Is the bike model. I don't know if this is being reported by the ecu OR if it is set in the firmware of each different pmp3 module. It would be interesting to disconnect the ecu and then disconnect and reconnect the battery so the pmp3 looses power (ecu remaining disconnected). Then turn on the ignition and connect vespa snoop. If his number does come from the ecu then I would expect vespa snoop to show 0. If this does not come from the ecu then it would still show 147 and represent which bike the pmp3 firmware is made for.

UPDATE:

Dealership gave me another module to try.
I have installed it and behavior is exactly the same - not 100% functional.

Now I have removed module and installation kit from my Liberty and dealership will try try to install it on theirs and see what they can do.

I still believe that some kind of update needs to be done.

It would be interesting if they tried plugging it into a different scoot like a gts or mp3 ...

its pretty FU that piaggio can't get their electronics shit functional and reliable.

swap a part does not work.

This post was not quite
What we were hoping to see
Try again, perhaps?

1D004959 would be the hardware installation kit.
You fitted the 607687M PMP module?

I checked the software on a 607687M and that example had software version 2.03.00

I just installed another on a GTS, part number CM335200A (replaces 607687M) and interestingly it has a newer software, version 2.03.02.

^
This. All codes are now superseded by CM335200A (MIA V.3) cause there were compatibility issues when retrofitting the unit on models that didn't come with it from the factory. The module is compatible with Piaggio, Aprilia and Vespa models that support it…

Yes, 607687M is PMP module and 1D004959 is installation kit (bracket, wiring and relay)

My Piaggio dealer is still looking for a solution

Try the new version CM335200A