Carpuride BMW unit stalling or restarting

[a white mouse on the motorbike]

Well, I think that not the Carpuride nor the MRA software is the problem. I think that the real problem is your BMW!
Have you tried connecting the Carpuride to another power-source, a powerbank for-instant? Or directly to the battery!

[Sytze van der Laan]

yes that cannot be excluded, although the BMW is brand new. But it is the first thing I will check the coming days, powering the Carpuride with the USB-C outlet of the bike and taping it to my tank bag or something similar. See how that goes. Thanks!

[a white mouse on the motorbike]

Well, I do not trust BMW anymore since I bought me an brand new R1250RT with DAB- radio. After three year the still are not capable to make it work! And also the Navigation is still not working as it should be.
Therefore I advise you to use an external power source to test or power it directly to the battery.
Not over a power source that is controlled by the CanBus system.

[Sytze van der Laan]

OK thanks for the heads up. It will be interesting to test both, with the USB-bus and with a power bank - since it could be the USB bus or the cradle connector. It is now an elimination process!

[Maarten van de Wijdeven]

I have had similar issues with my Carpuride 702Pro (without a cradle) and it seemed related to (low) voltage/power.
When I just bought the device I wanted to test it out and had no time to connect all the wiring. So I just hooked it up to a 5000mAh powerbank and went for a ride.
All went well untill after 30 minutes to an hour when the device kept restarting and showed a very low voltage, like 4.x something volts.

So it looked like the device wasn't getting enough sustained power even though the powerbank wasn't empty or draining hard.

I didn't have a USB A to C cable with me to plug directly into my dedicated USB port so I can't say for sure if that had made things better.

The Carpuride should display the currently used voltage in the upright corner of the Home screen.

Also bear in mind that all USB-C cables are not alike and may deliver different voltages and amps/watts.

If a cable isn't rated for USB-C 3.2 Gen 2 it may only deliver up to 5 volt / 900mA, resulting in 4.5 watts.
USB-C 3.2 Gen 2 can deliver 5v / 1.5A / 7.5 watts when doing USB Battery Charging (BC) which is the charging standard from a USB-A port.

Things get more murky when connecting USB-C to USB-C, the charging depends on what the port can deliver or will switch to. USB-C supports more standards for Power Delivery (PD) up to 240 watt(!) and Non-PD (5V/3A/15w)

Ever since the Carpuride has been connected to my 12V powerline (interrupted by contact switch) I have had no more problems.

To back this up, I found this article from 2024 which explains it as well:

https://www.ukgser.com/community/threads/i’ve-been-considering-getting-a-carpuride-does-it-need-hard-wiring-or-can-you-power-it-via-a-usb.391065/

So the Carpuride needs 2A over USB and will suffer if it gets less power. Unless your USB port supports that, I think USB-C is only meant as a fall-back power option (like using your Carpuride as a small media player when camping)

Last but not least:
For Harley (my bike) not everything electrical goes over the CAN-BUS (BMW uses a different approach and uses less wiring and pretty much everything goes over 2 wires and through the CAN-BUS) which is where many issues with adding accessories come from.

So many owners will simply bypass that and add wiring with a fuse (or even fuse panel) and connect directly to battery.

[Sytze van der Laan]

wow thanks for this interesting lecture (I am not worthy, being an electric illiterate). I will check in the BMW manual what the output on the bike's USB-C port is and find the best USB-C cable. Being slightly more computer literate, I know what a mess USB-C is... thanks again!

[Maarten van de Wijdeven]

Likewise: as a sysadmin, I'm far more computer literate than an "electric literate" (is that a term?)

There are aftermarket accessories available of course, this vendor at least gives clear technical details about the compatibility with BMW CAN Bus and DC input/output / USB C protocols supported:
https://www.wunderlich.de/en/wunderlich-usb-double-socket-usb-usb-c-with-socket-installation-r-1300-gs-13800-000

[siebo vd berg]

There is an update for the Carpureride. Solve an bug in Carpureride info on there website.

[a white mouse on the motorbike]

@siebo-vd-berg Please share the link for I can not find any message about a bug and an update!

[siebo vd berg]


Also the 702

[Sytze van der Laan]

So it seems after lots of mails back and forth that the problem came from a messy update policy at Carpuride. First they had OTA updates, which they then switched off themselves without notifying anyone. Then you had to download updates, but only for PC and on a flash drive. In my audiovisual profession no one has PC's, so there you go. After complaining, they suddenly turned OTA on and I could update the device. By then I had finally found someone with a PC, so I could also do the firmware update with the SD-card. Now everything is updated and for the moment works fine! Welcome to the 21st century...