BMW Smartkey with PCF7953

[simaservis1108]

Is it possible to replace the PCF7953 in BMW smart key and code with Hitag2 to car via dump?
Will remote also work?

[gtmech]

Is it possible to replace the PCF7953 in BMW smart key and code with Hitag2 to car via dump?
Will remote also work?

if its the china key then tmpro2 can unlock it for you

[simaservis1108]

Nope,this is original BMW key,I can get a handfull of PCF7953,would just like to know if we can reuse this?

[topclef]

PCF7953 is Hitag-Pro used in newest BMW F-serie and Range Rover Smart Card .

these transponders are not easy to configure if you purchased blank ..

[simaservis1108]

This is old key.Not new one.I think it is from E60 keyless go.

[topclef]

Old : PCF 7942 ,7943 ,7944 and PCF 7945 , for PCF7953 I never seen old .

[simaservis1108]

Here are some photos attached:
263231263234

[bram380]

Zedbull clone read key PCF7945 as PCF7953.

[simaservis1108]

Zedbull clone read key PCF7945 as PCF7953.

If I replace the PCF7945 can I code key and remote with Hitag2 programmer?

[neno11]

Hm, this venture seems difficult as going to the moon, but nobody can stop you to try. But be aware that producer (in this case Philips/NXP) spent lot of money on security development and chinese as most famous cloners in the world on the other side spend also lot of money on cracking originals. Sometimes they succeed sometimes not, but for sure they return their investment by mass production, how will you?

[Cardiag.ru]

If I replace the PCF7945 can I code key and remote with Hitag2 programmer?
No, BMW 7945 is preprogrammed on NXP factory. New 7945 will not work.

[simaservis1108]

So what are my options to reuse original BMW remote with PCF7945?Maybe another type of PCF instead?
I am open for suggestions.

[amir_82013]

Hi
i try read info a key BMW with tag key tool v6.3 (Hitag2)
Tag key tool show to me PCF7953
BUT
Tango show to me PCF7945
Which Correct ?

[ninja123]

read the markings on the chip :)

ninja

[topclef]

Hi
i try read info a key BMW with tag key tool v6.3 (Hitag2)
Tag key tool show to me PCF7953
BUT
Tango show to me PCF7945
Which Correct ?

tango don't joke :top:

[paul_12345]

So what are my options to reuse original BMW remote with PCF7945?Maybe another type of PCF instead?
I am open for suggestions.

there is no way to do these, pcf7945 are just like pcf7941 and have a risc processor controlling the remote part from a program in eprom.

only pcf7946/47 can be precoded via hitag as they used a fixed circuit to do the remote and use the remote pages in the transponder in the calculation of the remote

[simaservis1108]

Just confirmed it is possible,only need to buy BMW 7945 chip.I got a hold of supplier.

[paul_12345]

Just confirmed it is possible,only need to buy BMW 7945 chip.I got a hold of supplier.

well its pretty obvious if you can get a new programmed chip it would work. but how much they want as the chinese keys aren't that expensive and you haven't got to mess around and also get a new case

[simaservis1108]

I got the keys as a bulk for a bargain,they ask abit more than usual transponder,but I still fit in the price lower than chinese key.And it is original key after all,much better build quality.

[dmp]

is this the comfort access key? I believe the only chinese ones I've seen must be put into the ignition slot, hopefully someone can prove me wrong

Care to share the source for the BMW pre-programmed chips?

[simaservis1108]

There are 35 dollar keys which are ignition slot ones,and then there are 135 dollar ones which are keyless go.
Yes ofcourse,as soon as I test them,they say they work,I will put them to the test.

[indienick]

No, BMW 7945 is preprogrammed on NXP factory. New 7945 will not work.

this is the correct answer. same with PCF7953.

[indienick]

Just confirmed it is possible,only need to buy BMW 7945 chip.I got a hold of supplier.

Sorry m8....not true.... not if you are using an OEM PCB. Maybe you get can the transponder to start the car but remote 100000% no.

[simaservis1108]

Another member here has done just that,and it got remote to work...He has passed me contact details,I will test and try.

[indienick]

here is a summary for those are not clear

PCF7945 is not keylessGo - must put key in slot to start car.

PCF7953 is keylessGo.

You can use either key for the other....I.e. you can use PCF7953 for PCF7945 car, and you can use PCF7945 for PCF7953 car, but the prox will not work. Remote and transponder works though.

both keys look like this:

http://f00.inventorspot.com/images/BMW1.jpg


It is easy to see the difference - there is no battery slot on the back of the PCF7945 key. This is because this battery is charge in the ignition
There is battery slot on back of PCF7953 (prox), because the key never is in the ignition, it cannot charge....must use normal battery.

[Bllinda]

maybe the picture quality PCB

[K1nd3r]

have someone pcf7953 PC1900 datasheet?