82-0505 Removal and installation of radio Preliminary work: Ashtray removed (54-391). A. Single-module unit, push button control, two-component set and CD player with radio control unit, with Mercedes-Benz mount Ground cable on battery Clamping lever (arrows) Radio (A2, up to approx. 09.90) or CD player and radio control unit (A2/2) disconnect, reconnect. push down. pull out, push in. Page 1 of 9
If the radio cannot be removed as described above it may be installed with a universal mount, two spring-loaded clamping levers at the top of the unit (remove as described under B.) Radio (A2) single-module unit or radio control unit (A2/4, as of approx. 09.90) insert removal plates (1) and withdraw radio or radio control unit, insert. Push back retaining springs on removed radio and withdraw plates (1). Radios were installed in the initial phase without the side retaining springs. On these radios, the removal plates do not lock in place. Removal and installation can be accomplished as with the previous generation of radios. All radio versions Electrical connections, antenna and speaker cables Code number disconnect, reconnect. On radios as of approx. 09/87 or 11/87 to 08/90 with variable code number. entered by customer (see Operating instructions). New generation of radios with fixed code. Enter code number on code card (see section D. or E.) Tool for removing Designation Part no. Removal plates (1 set = 2 plates) 000 833 03 61 B. With universal mount (Becker) Page 2 of 9
Radio front panel Clamping lever Radio Electrical connections, antenna and speaker cables remove, press on. Withdrawal hook 140 589 02 33 00. M Pull off only in the area indicated to avoid damaging the front panel. pull down with assembly eyes or 1 mm dia. wire. remove, insert. disconnect, reconnect. If the standard radio mountings are fitted to the vehicle, remove the universal mountings on the radio before installing. On radio sets from approx. 09/87 or 11/87 to 08/90 with variable code number. Code number entered by customer (see section D.). Special tools C. General Page 3 of 9
On vehicles with speed-dependent volume control or with sound system ensure that the volume control (up to approx. June 87) or the coupling amplifier are converted when replacing the radio set. A2 Radio A2/1 Coupling amplifier radio/sound system Becker car radio sets with variable code no. (except I) - Mexico-Diversity-Code from 09/87 to approx. 08/90 - Mexico-Diversity-Compact Disc from 09/87 to approx. 05/93 - Grand Prix Cassette electronic Kurier LMU Code from 11/87 to approx. 08/90 - Grand Prix electronic Kurier LMU Code from 11/87 to approx. 08/90 - Europa Cassette electronic Kurier MU Code from 11/87 to approx. 08/90 - Avus Cassette electronic Kurier MU Code from 11/87 to approx. 08/90 These radio sets can be protected against theft by entering a code number of the customer's choosing (see section D.). The anti-theft protection is activated if the radio set is separated from the continuous power supply (terminal 30). The radio set cannot be restored to use unless the continuous power supply is reinstated and the correct code no. entered on the radio set. If the set code no. is lost the radio set can only be decoded by the manufacturer. Federal Republic of Germany Export countries Firma Becker Autoradiowerk GmbH Agency or service centers of D-76307 Karlsbad-Ittersbach Becker Autoradiowerk GmbH Page 4 of 9
I radio as of model year 1986 If the radio is removed when the anti-theft warning system is switched on, the set is rendered unusable and cannot operate again until repaired at a Becker service point. I radio as of model year 1990 The Becker Grand Prix radio is replaced by the Mercedes-Benz radio which differs in the following respects: Improved reception properties in the FM range AM reception in mono only Station search two-stage only Fixed anti-theft coding. When the key in the steering wheel lock is turned back from position 1 to position 0, the Becker Mexico 2000 and Becker Grand Prix 2000 I radios remain on for a further three seconds approximately. These radios can be switched on and off additionally when the key is removed by pressing the on/off button. The radio switches off automatically after one hour. It can then be switched on again. The power is supplied through terminal 30. D. Coding radio (3-digit variable code no.) Page 5 of 9
M 2 Switching on the coded radio after It is not possible to use the number combination interruption of the power supply "000" as the personal code. 2.1 After the radio is switched on the word 1 Coding a personal code no. before using "CodE" appears on the display. The correct the radio for the first time. code number must then be entered one This assumes that the radio is coded with the number after another to use the radio. The number combination "000" i.e. not coded. numbers can be set for each digit by turning the manual tuning dial to the right. Enter each 1.1 Switch on radio, press the automatic button number after setting by pressing the down within 8 seconds immediately after automatic key down. The display then switching on. Hold the automatic button switches automatically to the next digit for depressed for approx. 8 seconds until the entry of the next number. number combination "000" appears on the The word "CodE" disappears as soon as display. Then release the automatic button. the manual tuning is actuated and the The display behaves as during station search presently selected number is indicated by during the time the button is depressed. the left-hand code digit. The two code digits not yet entered are indicated by dashes 1.2 The left-hand digit in the number combination "--". "000" flashes and the number can be set. This is accomplished for each digit by turning 2.2 After entry of the third digit the visible number the manual tuning dial to the right. The combination is compared with the internally number set in this manner can be entered by stored code number and the radio switches momentarily pressing the automatic button over immediately to radio mode when the and the next digit to the right starts flashing. number entered is identical with the internally After entering the third number the first digit of stored code number. the code flashes again. The code can be reentered as frequently as desired in this 2.3 In the event of an incorrect entry the word manner, e.g. for correcting entries. "CodE" reappears and the entry can be made again. After entry of the wrong code number 1.3 After setting the desired number combination, three times it is necessary to wait 15 minutes press the automatic button down and hold before reentry of the code as long as the depressed until storage of the code number in radio has not been switched off or completely the memory is confirmed by a "C" appearing disconnected from the power supply. During on the display. The code number is then the 15 minute waiting time the word "CodE" displayed for approx. 4 seconds as a check; remains on the display and operation is not then the radio returns to radio mode. possible. After expiration of the waiting time a new attempt can be made to enter the code number as described in 2.1. After 9 incorrect entries in sequence the radio is no longer capable of operation. This is indicated on the display by four dashes "----". It is then necessary to send the radio in to the manufacturer for reactivation. Page 6 of 9
3 Recoding of an existing code number A CODE CARD is included with the car radio 3.1 Switch on radio. Press the automatic button indicating the model and serial number. A down within 8 seconds directly after switching personal code number can be noted in the free on the radio. Hold the automatic button space "SAFETY NO.". depressed for approx. 8 seconds until the Since the CODE CARD can also be used as proof word "CodE" appears on the display. Then of ownership, it should always be stored in a safe release the automatic button. place outside the vehicle. This makes illegal use The display behaves in the same manner as impossible. during station search during the time the button is depressed. 3.2 It is then necessary for the user to identify himself by entering the previous code. This is accomplished as described in point 2.1, however, with the difference that after entry of the third digit the first digit in the number combination flashes again when the correct code number was entered. In the event of an incorrect entry a new code number is not requested, the radio returns immediately to radio mode. After entering the wrong code three times the 15 minute waiting time also occurs here when the radio has not been switched off or separated completely from the power supply. 3.3 The new number combination can be entered as described in items 1.2 and 1.3. If the combination "000" is entered, the radio is not coded and can be operated without entering the code after disconnection and reconnection to the power supply. E. Coding radio (4-digit fixed code) Page 7 of 9
1. If the radio is separated from the power supply, 4. After entry of the correct code with station it is ready to function when it is reconnected. buttons 1, 2, 3, 4 and confirmation with the After switching on the ignition and the radio the search button (downward) the word CODE word CODE appears on the display. disappears. The radio is then ready for operation. 2. The code number for this radio is indicated on the enclosed CODE CARD. 5. After entry of the incorrect code number three times reentry can be accomplished only after 3. To enter the first digit of the code number waiting 15 minutes. Moreover, access is press the station key -1- until the correct number appears on the display. Repeat this sequence for the second, third and fourth numbers. denied for 24 hours after nine incorrect entries. During this waiting time the radio and ignition (terminal 15) must remain switched on. A CODE CARD is included in duplicate with each radio set or radio control stage indicating the model, serial number and code number of the radio set or radio control stage. An identification card containing the serial number is included for the receiver and amplifier stage on two-component radio sets and CD player with changer. F. Infrared remote control Page 8 of 9
1 Volume buttons 7 2 Automatic search buttons 8 3 Scanning button 9 4 Right treble/balance button 10 5 Left base/balance button 11 6 Wave range buttons, station buttons, buttons for 12 selecting CD compartment Dummy button Function button Forward/fast forward title search button Reverse/fast reverse tile search button Track selection button MODE button The two-component radios Becker Mexico 2000 and Becker Grand Prix 2000 I are prepared for infrared remote control available as special equipment. This allows the primary functions (radio, cassette and CD player with changer) to be controlled from the rear of the vehicle. Page 9 of 9