Vida CEM swapping

oscilloscope · Post by **oscilloscope** » 21 Oct 2022, 16:34

I have checked the tracking of the elusive cf160 transceivers, they have at last landed in the uk

but typically there is a postal strike!!! So who knows if I'll receive it at all this year

brobert · Post by **brobert** » 21 Oct 2022, 19:49

You could harvest a CAN transceiver from a spare Volvo unit...
I got my transceiver (NXP TJA1040) from an old XC70 Rear Electronic Module.
There is poetic pleasure in using a Volvo component to recover what was taken from you by Volvo

I'm alluding here to your right to customize or repair your car.
This PIN business or being locked out of using spare parts is really sleazy.
Cheers from Canada

oscilloscope · Post by **oscilloscope** » 22 Oct 2022, 00:13

brobert wrote: ↑21 Oct 2022, 19:49 You could harvest a CAN transceiver from a spare Volvo unit...
I got my transceiver (NXP TJA1040) from an old XC70 Rear Electronic Module.
There is poetic pleasure in using a Volvo component to recover what was taken from you by Volvo
I'm alluding here to your right to customize or repair your car.
This PIN business or being locked out of using spare parts is really sleazy.
Cheers from Canada

I like poetic justice , if they don't turn up I'll look for a module which has that version or see if there is a healthy supply of them over here.

oscilloscope · Post by **oscilloscope** » 22 Oct 2022, 06:44

vtl wrote: ↑21 Oct 2022, 10:13
oscilloscope wrote: ↑21 Oct 2022, 04:24 Unfortunately my other test cem was not able to be decoded. With the cracker. Which is disappointing, I have another cem to play around with I managed to score from ebay for £20 quid. I'll certainly will be trying it on that too
What are these CEMs part numbers?

How about repeatability of the first two bytes in the pin, do you get the same numbers on every run?

The cheap cem turned up

: volvo cem test cem pic 3.jpg (207.34 KiB) Viewed 456 times

I'll start having a mess around with it after I have finished at the hospital.

Also I found some 30awg wire which is handy as I don't Need to buy any. And 14awg is pretty thick stuff. For my first go I used some 18 or 19awg i think it is , ill doubld check . Is 14awg best to give a good result ?

Post by **vtl** » 22 Oct 2022, 09:00

The transceiver on either side has to drive these wires. They are not very powerful, so overcoming a large capacity of thick wires at high speed becomes a problem.

oscilloscope · Post by **oscilloscope** » 22 Oct 2022, 10:16

vtl wrote: ↑22 Oct 2022, 09:00 The transceiver on either side has to drive these wires. They are not very powerful, so overcoming a large capacity of thick wires at high speed becomes a problem.

I'll certainly change the wiring I have currently installed , and change it over for further testing.
Afew days ago I did use some purpose built transceivers, as I was being inpatient. As I was awaiting some transceivers, but then Rick recommended some cf160's which I have been awaiting. , all at the same time, the pcbway recently turned up so another piece of the puzzle.

Regarding the reg Did you use a 12v to 5v reg like a L7812CV ? or a purpose built regulator ? For you're rig?

oscilloscope · Post by **oscilloscope** » 22 Oct 2022, 13:09

vtl wrote: ↑21 Oct 2022, 11:13
oscilloscope wrote: ↑21 Oct 2022, 10:40 It managed to capture 6 numbers in total. Not the full amount, it tries to perform the bute force attack and then fails. , i still have it hooked up to my rig and I'll do afew passes to see.
Cem part number 31394157
Rick had problems with 31394157 as well, not sure of his resolution.

Also is it from MY2006+ car? 2006+ can be cracked with P3 protocol. T5Luke posted his program to crack it via DiCE.

Do you have a link for the software @T5Luke made ? Or is it on github ?

T5Luke · Post by **T5Luke** » 22 Oct 2022, 16:03

download/file.php?id=75855

It was here... Page 225

T5Luke · Post by **T5Luke** » 22 Oct 2022, 16:04

viewtopic.php?t=85611&start=2240

It was here...

oscilloscope · Post by **oscilloscope** » 22 Oct 2022, 17:08

T5Luke wrote: ↑22 Oct 2022, 16:04 viewtopic.php?t=85611&start=2240

It was here...

Thanks I'll check it out.

Vida CEM swapping

Re: Vida CEM swapping