[bergekste]

Guys, i have 2 citroen keys (original OEM 96742552ZD) which i would like to reprogram to a Citroen C4 picasso 2014. But, these keys are not yet renewed (unblocked for reprogramming). Inside there is an NXP chip of the type f53a1513. 

Can this be done? till now i just come accross the renewing FW for the PCF79xx family, but not this nxp f53a1513.

Below a similar picture of how the both keys look like (not chinese, but real factory OEM).

[zmann]

I feel like you have two difficulties to come across...

- You need to know modulation mode whether ASK or FSK of the used key and the need by C4, if they were not originally for that car model.

- I don't know your virginiser tool but had some test on Orange5, every cases all user data area was also wiped off after virgin, that's the problem !

[bergekste]

I feel like you have two difficulties to come across...

- You need to know modulation mode whether ASK or FSK of the used key and the need by C4, if they were not originally for that car model.

- I don't know your virginiser tool but had some test on Orange5, every cases all user data area was also wiped off after virgin, that's the problem !

ok, some more difficulties then. Just virginizing is not going to do the job then. But i have a main difficulity that these keys are not PCF based... No key tool (eg orange5) is able to do an anything which these keys, right?

[zmann]

If you still have some effort let's try ! First of all, with some couple questions...
- Do you know the PIN code of the car that these two used remote was belong to ?
- Are you full or partial key man, I mean you have some tool like EFfi (Zed bull)

Take one new PCF7936 then code in your C4 and see if is possible and the car start , if yes it's PCF based
- Take good PCB photos of the used remotes and the C4 remote and post