BMW Business RDS Phillips PH7850 code generator

basic_z3

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British Zeds
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2000 BMW Z3 M43B19TU
Hi all,

As I want to bring my Z3 to the original spec I have bought the BMW Business RDS Phillips PH7850 radio. Unfortunately it came with no code and seller claims he doesn't have it. Does anyone happen to know the code generator app that works or any other way I could get the code for it?

Here are the numbers from my radio unit:
PH785011481021
22DC785/24

1000031771.jpg

1000031769.jpg
 

as400

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Ebay? got to be worth £1.99
 

basic_z3

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2000 BMW Z3 M43B19TU
I have tried a few on eBay but they are just replying to me that my serial number has not been found in their databases. Any idea why could that be?
 
Last edited:

137699

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M Coupe 3.2 S50
Ask on the ecoustics forum - someone there will get the code for you
 

basic_z3

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2000 BMW Z3 M43B19TU
I got some answers on other forums and unfortunately in my case eeprom needs to be read/reprogrammed ad the code for my radio is not found in any databases. I have ordered eep reader from eBay and hopefully soon I'll be able to update my progress here.
 

Tony Francis

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Z3 1.8 M43TU
Did you get this sorted? Did the reader work?
 

as400

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basic_z3

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British Zeds
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Location
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Model of Z
2000 BMW Z3 M43B19TU
Yes, I had to remove chip 24c16 from the board as the clips that the reader came with was too small but I have managed to read the code and replace value as per screenshot below. The radio does not ask for the code anymore.

1000033550.jpg


1000032463.jpg

1000032469.jpg


I tested it in my E39
1000033558.jpg


I wish I had a tool like this but couldn't find the right size online:
1000033551.jpg
 

as400

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That's a lot of work but well done!
 

kieran98

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Sep 8, 2025
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Yes, I had to remove chip 24c16 from the board as the clips that the reader came with was too small but I have managed to read the code and replace value as per screenshot below. The radio does not ask for the code anymore.

View attachment 310117

View attachment 310123
View attachment 310125

I tested it in my E39
View attachment 310119

I wish I had a tool like this but couldn't find the right size online:
View attachment 310121
Hi mate, I'm in a similar situation and already have an EEPROM programmer but what software are you using there?
 
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