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  DIY CEM (and VGM) PIN Retrieval for Volvo and Polestar
Posted by: Power6 - 02-02-2023, 02:42 PM - Forum: OrBit FAQs - Replies (67)

If you want to change configuration on your Volvo, you need to have the "CEM PIN" for your car, and if you have an Android Auto based Polestar or Volvo (aka an "iCup" car) you also need the "VGM PIN" for the car. PINs are something like passwords to access modules. Like all modern cars, the manufacturer doesn't want you to make changes, so there are various security features throughout the car to prevent that. There are dozens of PINs for each car. We are only interested in the specific PINs to make configuration changes to the car for this procedure.

We currently offer the PIN service as an easy way to get the PIN(s) you need. But it is possible to get PINs yourself for your car, or PINs for any Volvo or Polestar. OrBit has tools built in to help. First you must gather some information from the official diagnostic software, VIDA. Essentially what you do is make VIDA use the secret PIN on your car and record it, then use OrBit to 'crack' the PIN from that information.

Here's what you will need to do that:

  • Access to Volvo or Polestar VIDA
  • Access to the local computer running VIDA, will need to be able to install Wireshark on it)
  • Ability to order "configuration test" software in VIDA
  • VIDA must be connected to the car with wired connection (no dealer WiFi)
  • VOE Cable to connect to the car (or equivalent, same as what you would use with OrBit)

Thanks to right-to-repair law in a single US state (Go Massachusetts Smile ), consumers in North America (NA) are able to buy a subscription to VIDA at volvotechinfo.com (or polestartechhub.com for Polestar). If you are set up with a Windows laptop and cable for OrBit, the same setup will work for VIDA. Outside North America, VIDA software is not available to consumers, making access to VIDA much more difficult. There have been many workarounds for this, which is not part of this discussion but creative solutions are out there to get to VIDA outside NA. 

This post is not a VIDA DIY, that's a whole other topic! We'll assume you have a subscription set up, or a friendly mechanic with VIDA, and you are able to navigate connecting the car and purchasing software. It can be tricky the first time through to know how the system works.

STEP 1 - Capture software install from VIDA
  • Open VIDA and log in

  • Open Wireshark, go to Capture menu, click "Start"
  •    
  • Connect to the car in VIDA
  • In VIDA order a "configuration test" for your car (this is cheap, just $0.01!)
  • Once ordered, you can retrieve the order in VIDA, to get it ready for install
  • Install the software in VIDA, wait until it is complete
  • In Wireshark, go to Capture menu, click "Stop"
  • Got to the File menu, click "Save As..."
  • Save the capture file (as a "pcapng" file type)
  • If this is not the same computer you will run OrBit on, save the pcapng somewhere you can get to it later (cloud service) or take it with you (USB stick)

STEP 2 - Crack the PIN with OrBit
  • Open OrBit, and log in
  • Go to "Expert Toolbox" tab
  • Click the "PIN Finder" button
  • Choose the pcapng capture file from Step 1
  • Wait for OrBit to do the magic! It can take up to a minute, maybe longer for really slow laptop...
   
  • If the pcapng file contains PIN information (including CEM/VGM PINs), OrBit will output the PINs found in the PIN finder report
  • You can save the PIN(s) report for safe keeping. If your car is currently connected, OrBit will prompt you to save the PINs in the profile.
  • If your car is not connected, you can later paste the PIN(s) into the "Add CEM PIN" and "Add VGM PIN" dialogs opened with the buttons on the Shortcuts tab in OrBit, while you are connected to your car. 

Enjoy exploring and modifying config with OrBit! I'd like to note here, unlike "other" software, OrBit reflects my belief that *you* own your car, so always the PINs that you get, are given to you, to use however you like! You can take them and use them with any other Volvo software, make your own software or tools, whatever. We don't borrow them from Volvo then lock them up in our own proprietary system. Just wanted to get that off my chest lol ;-) Enjoy!

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