Excellent writeup. My 2004 Volvo V70 2.5T has the same problem. Both keys not responding and the message "Start Prevented Try Again." I don't have any of the tools you used. What I understood from this writeup is that programming new keys would solve this problem. Did i get that right? Th...

Is it possible for any of you programmers in this thread to help me out? I promise at the end of my project there will be a sweet surprise for end users but I need help or some pointers on the following: Using Visual Studio 2022 C++, I want to use dice J2534 commands, can anyone point me in the dire...

Wife's ex-2016 XC60 had to be towed to dealer, KVM module replaced, a bunch of others reflashed. New cars suck. I replaced a cem on one the other day. For some reason there was a totally dead CAN Transceiver, with a pocket oscilloscope I found the chip was grounding out the comms between the transc...

I think there is more to this story but I only have what the customer states. Customer said the battery was low and the standard HU850 radio had the normal cd changer issue. So the customer changed the radio for an aftermarket and changed the battery. After this it was a no start. Personally I thin...

Well done tutorial. What’s saddening is this level of expertise on a 17 +year old car won’t be at the Volvo dealer, or any manufacturer for thst matter. Thanks for contributing this! Unfortuneately the dealer tech's do have their hands tied. They have a strict process to go through. Once that has b...

Very nice and exhaustive, it has been years since I have seen a tutorial written in this manner. Just wondering, could the eeprom have been corrupted? Maybe flipped bits or something? I think there is more to this story but I only have what the customer states. Customer said the battery was low and...

A thread I put up earler in reference to this project and showing what can be done when you start aquiring tools.

viewtopic.php?t=105847

Hi everyone, Thought I'd add a little tutorial for the P2 vehicles. For anyone who doesn't know me I'm an autoelectrician. I don't just play with wires like most, I dive deep into the inner workings of the flash files too for a better understanding. I work on Volvo's quite a bit along with other man...

Hi all. Happy new year to you all. I've been away for a while but not away from the volvo hacking scene. With the help of this Pin Code retriever I managed to repair a corrupt CEM eeprom and bring the car back to life recently. The repair needed the use of this teensy project, IOterminal, DHA, DICE ...

Hi All, Haven't been on for a while, lifes been keeping me very busy. I want to open up the question of "what pin codes have people found, especially default ones stored in eeproms or standard keys used with P1/P3/SPA/CMA vehicles?" Some attached below, but i've blanked them for now. I'm n...