Radio Code Phillips BMW Business RDS

huldra66 · September 24, 2026 at 5:13 PM

Anyone having a code generator for these?

Serial number PH7850X1458238

Regards

Terje

revtor · September 24, 2026 at 8:41 PM

As far as I know the security code of BMW rebranded Philips head units like the PH7850 cannot be generated from the serial. Those selling radio codes use databases of known serial-code combinations, but if your head unit is not in it, you are out of luck.

In theory a BMW dealer should be able to help you (BMW knows the code), but I don't know whether they can/will help if the head unit did not come with the car you own. It's even possible they can only retrieve security codes by VIN.

If no one else can help you, you will have to dump the 24C16 EEPROM on the main board. The security code can be found in address range 0x12 .. 0x15. For example: bytes 01 02 03 04 = security code 1234.

huldra66 · September 24, 2026 at 9:34 PM

So replacing the Eeprom with one from a parts radio with known code could also work then I assume?

revtor · September 24, 2026 at 10:12 PM

Yes, that should work. But if you have the tools to desolder & solder the EEPROM, don't you have the tools to read the EEPROM?

huldra66 · September 24, 2026 at 10:26 PM

Quote from revtor

Yes, that should work. But if you have the tools to desolder & solder the EEPROM, don't you have the tools to read the EEPROM?

I have an old Eeprom programmer/reader so possibly that needs to be tried as well 😎 long time since that was used , easy to desolder and solder in another but could be interesting to try and read it as well

huldra66 · September 29, 2026 at 7:49 PM

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huldra66 · September 29, 2026 at 7:50 PM

So code was read 🤪 and I could also change the code and burn a new chip if I like to 😎

revtor · September 30, 2026 at 4:43 PM

Nice! 👍️

reinhard · October 1, 2026 at 7:30 AM

Wow. 🆒

You will make lots of money with that

Happy for you!

Much nicer to see both of you still around though!

Reinhard

huldra66 · October 3, 2026 at 7:53 PM

Quote from reinhard

Wow. 🆒
You will make lots of money with that
Happy for you!
Much nicer to see both of you still around though!
Reinhard

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Still around and still have 3x , had a great tour to spain in the spring and the had the car there for the summer before heading home with it a couple of weeks ago , oldest one the orange 850i , good to see that you alsois here 👍

ENGL · October 6, 2026 at 7:41 AM

freut uns auch, immer was zu lesen (mit Übersetzer )

Radio Code Phillips BMW Business RDS

Christoph October 1, 2026 at 9:28 AM

Participate now!

Christoph October 1, 2026 at 9:28 AM

Participate now!

Christoph October 1, 2026 at 9:28 AM