BMW Business RDS Bluetooth Radio
Originally installed in E31, E34, E36 and Z3 models but this unit can also be easily retrofitted into the E30, E32 and others.
This radio features a high-quality Bluetooth module with hands-free functionality. If needed, RCA outputs for an external amplifier can be added for an additional 20€.
For the music input the AM function is disabled, all other features continue to work as usual (FM, cassette and CD-Changer). To activate Bluetooth mode, simply press the AM button – the sound quality is crystal clear. The radio’s buttons control Bluetooth music playback and the display shows both track and caller information.
Compared to the Reverse RDS, this radio additionally offers:
▪️ CD-changer input (not compatible with newer i-bus CD changers)
▪️ Dolby Sound for the cassette player
▪️ Improved sound processing with slightly more bass
▪️ Three additional programmable pixel blocks at the corners of the display
▪️ 100 ms faster display refresh rate (text scrolls faster)
▪️ Multi-function steering wheel control integration
The volume regulator encoder has been replaced – This is a very common failure on these models, and unlike most sellers, I replace it proactively to ensure proper long-term function.
Please note: each time the radio is switched on, the cassette mechanism performs a brief self-check, which may eventually lead to a rattling sound (see video). The units I sell do not currently have this issue, but due to the age of these 90s mechanisms, I cannot guarantee how long this will remain like this.
The radio comes with hands-free microphone and code card. If needed, I can supply the appropriate radio connector as well. BMW-specific OEM-style microphone housings and E24/E30 flush-mount radio brackets are also available — please check my other products.
Radios original user manual and installation guide
The price is 849€ + shipping
I guarantee that the radio works correctly upon arrival. As these are original BMW units from the 1990s, the 1-year warranty applies to the Bluetooth-related components.
⭐ Read what other customers say about my service and radios here
Custom display text(s) for the Bluetooth mode:
When music is selected, the song information appears on the line C. After it has finished scrolling, the radio must display some static text, which remains on the screen until the next track begins.
You can use up to four static text lines: A, B, C and D. Any of these lines can also be left completely empty. Each letter and each space counts as one character:
A – max. 4 symbols
B – max. 3 symbols
C – max. 8 symbols
D – max. 2 symbols
There can also be your own scrolling texts on the line C (e.g. BLUETOOTH, The Ultimate Driving Machine, etc.), which appears once when the radio is switched to the Bluetooth mode. This has no length limit. After that must come some static text.
Below are some examples:
