Models with codes ER5 ÷ ER7
The radio receiver is removed using special keys, - models with codes ER5÷ER7
51 - Keys for removing the radio assembly; A2 - Radio receiver
This subsection deals with models equipped with MB audio systems «Classic» /class stereo «standard» (ER5 code), MV «Special» /stereo medium (mid) class (ER6 code) and MV «Exquisit» /mid-range stereo «comfort» (code ER7).
Removal and installation of the radio receiver (A2) made with special keys (51). After connecting, enter the security code into the radio receiver.
Models 463.250 with codes EF1 and EF2
The radio receiver is removed using special keys, - models 463.250 with codes EF1 and EF2
3 - D2B fiber optic cable connector; 4 - Wiring connectors; A2 - Radio receiver
This subsection deals with models 463.250 equipped with audio systems such as Audio 10 RDS (code EF1) and Audio 10 RDS with disc receiver (EF2 code).
1. Turn on the auxiliary battery and connect it to the standard battery, then disconnect the negative cable from the latter.
7 - Auxiliary battery
8 - Module positive wire terminal
9 - Terminal of the negative wire of the module
W10 - Battery Ground
2. Remove the facing panel of the console section of the instrument panel (see chapter Body).
3. Turn out fixing screws and release assembly of a radio receiver (A2) from the instrument panel.
4. Carefully, without bending or pulling, disconnect the D2B connector (3) fiber optic cable, - immediately block the waveguides with special light-tight caps.
5. Disconnect connectors (4) wiring.
6. Installation is carried out in the reverse order.
7. Finally, read the DTCs and clear the OBD memory using the STAR DIAGNOSIS scanner (6511 1801 00) (see chapter Engine Electrical Systems) and follow the basic programming procedures.