remote key reprograming x5 (E53)-help

[mkanaan]

i have bought a used remote key for my X5 and tried to reprogram it as per the instructions listed on X5 world but it didn't work, after all i found that the new used key Freq. is 433Mh while the original 315Mh, is there any way to reprogram in this case. please help

[trapdoor]

Originally Posted by mkanaan

i have bought a used remote key for my X5 and tried to reprogram it as per the instructions listed on X5 world but it didn't work, after all i found that the new used key Freq. is 433Mh while the original 315Mh, is there any way to reprogram in this case. please help

Nope. The frequencies are discreet, and 'market' dependant. There are different frequencies for different countries, due to the regulations surrounding low power transmitters.

433MHz is usually a European frequency and is in the ISM band (and ham band).

You will need the exact key frequency to work. The only alternative is to replace the receiver module in the car to match - easier to get the right keyfob.

[mkanaan]

thanks for the info.
i have a friend who owned X5 few days ago but he found that the side airbag near driver not exist while no lights or codes appear, is that possible? knowing that the other airbags are existing.