2014 Porsche bcm damage

[hananmori12]

Costumer called about 2014 Porsche Cayyene all keys lost, when I toke the bcm out I saw someone already tried read it and cut the board, I tried to read it with acdp, vvdi prog, autel, hexprog but nothing.

Can I get used bcm and program it ?

Part number 7PP907064HH

[vov4ik]

Costumer called about 2014 Porsche Cayyene all keys lost, when I toke the bcm out I saw someone already tried read it and cut the board, I tried to read it with acdp, vvdi prog, autel, hexprog but nothing.

Can I get used bcm and program it ?

Part number 7PP907064HH

I had many of them repaired after "repair". Usually there is a short in the area where the crystal sits and one of its traces cut and not properly restored. 2 minute job and it is good as new. Not sure what your current case is, but I would start there.
If board is seriously damaged, I would transfer the MCU or read it on a breakout board and write over to a working board with the same component layout.

[hananmori12]

I had many of them repaired after "repair". Usually there is a short in the area where the crystal sits and one of its traces cut and not properly restored. 2 minute job and it is good as new. Not sure what your current case is, but I would start there.
If board is seriously damaged, I would transfer the MCU or read it on a breakout board and write over to a working board with the same component layout.

Yes he probably tried to read it with vvdi or autel and cut the board, autohex and acdp not required to cut,
I tried to fix it or read it with all and nothing read it.

I believe its damage and the data probably too, how I can program a used one?

[vov4ik]

Take the crystal off and clean the area with isopropanol, hard to see anything through tons of flux, but it does not look too bad so far.

[hananmori12]

Take the crystal off and clean the area with isopropanol, hard to see anything through tons of flux, but it does not look too bad so far.

Its the ceramic one, the guy before cut it and damaged the point to solder to, i tried to solder there and the pin instead but still nothing

[vov4ik]

Unable to see the damage through the flux and with the crystal sitting there, remove the crystal from the board and clean all the area with alcohol so the damage is visible. There would be a short if too much solder gets under the crystal too.
I usually use thin copper wire to fix traces, bad coils are perfect source for it, do not even need to buy any.

Edit:
Make sure you have the MCU Pin 94 short (0 Ohm) to the test point as pictured, if it is not - you will have no clock input and it will not boot. Need to solder thin wire between the two. Also remove excessive solder and clean out the flux.

[hananmori12]

Hi tried again with vvdi prog, hexprog, autel im508 with xp400 and still nothing,

There is a option to remove the mcu and read it??

Can I read the rear bcm and get info for this bcm?

what my options ?!

[rob h]

Clean it first. Use some alcohol.
If needed, paint remover. Let this sit, for a maximum of 10min, then clean it with alcohol.

Then you should be able to see the tracks better.

[vov4ik]

You can sure read the MCU on a breakout board.
If I had to line you up on this, I would say -
+clean the board (did I mention it earlier?), flux should not be there, it only takes a spoon of isopropyl alcohol and an old soft toothbrush
+remove shorts (marked with blue lines) -you can try reading using autel or vvdi after that
+mount a known good crystal
+fix the trace using copper wire (marked in red)
+install in the vehicle and check for comms with module

[hananmori12]

I will get alcohol to clean it but the red line you did its not the right one, look on vvdi diagram I uploaded, the line go to a test point above, the other gut destroy that point

[vov4ik]

I will get alcohol to clean it but the red line you did its not the right one, look on vvdi diagram I uploaded, the line go to a test point above, the other gut destroy that point

Please. If you want help, then accept it.
That pad is not important, as long as the via (the hole that makes connection to the other layer) is ok, wire is sufficient. Instead of that point, use mcu leg 94 for clock input for your vvdi/autel. Follow the lineup and you should be fine.

[hananmori12]

I appreciate it, I tried to solder a wire to that leg but still didn’t work, I will try to clean it like you mentioned

[vov4ik]

You have to remove the short circuits prior to reading (marked as blue lines)
I would fill the hole (red) with a glue, hope it is not cut through the other layer.

[issam216]

at least you have to tell memeber if your job is done or not give a feedback

[Spiritech]

I don't think that BCM is worth salvaging, throw that processor on a fresh board.