installation bumper R-DESIGN problem with parking sensors

[set]

Hello everyone!

I installed new bumpers on my Volvo XC90 2019y (inscription)  fron R-Design car 2020y
But the parking sensors don't work. 

I tried to replace the PAM. My number PAM 32243137, new 32281512
but, it didn't work

I was told that I need to replace the parking sensors because they were not the same in 2019 and 2020

Maybe someone knows how to fix this without replacing the parking sensors ?

[Marcp]

Hello everyone!

I installed new bumpers on my Volvo XC90 2019y (inscription)  fron R-Design car 2020y
But the parking sensors don't work. 

I tried to replace the PAM. My number PAM 32243137, new 32281512
but, it didn't work

I was told that I need to replace the parking sensors because they were not the same in 2019 and 2020

Maybe someone knows how to fix this without replacing the parking sensors ?

[paunionutz]

You replaced WAM, not PAM. PAM is integrated in CEM, you can't replace PAM

[set]

thanks for the info
is it really possible to reprogram it?
or the only way out is to replace the parking sensor