The following types of radios are offered for the E39:
Trade name of radio |
Operating unit |
BMW-internal designation |
|---|---|---|
BMW reverse RDS |
BMW designation |
C32 |
BMW Business RDS |
IRIS or MID |
C33 |
BMW Business CD RDS |
IRIS or MID |
CD33 |
BMW Professional RDS |
MID |
C34 |
BMW on-board monitor radio |
On-board monitor |
C23 |
An anti-theft security code (radio code) is no longer necessary for the radios C33, CD33, C34 and C23 since these radios can only be operated in conjunction with IRIS, MID or on-board monitor. Since the radio set and operating unit of the C32 form one unit, this radio is protected by a code function (activated after disconnecting and reconnecting to power supply).