S 600 (140.057) V12-6.0L (120.982) (1998)
is confirmed, the word CODE will appear again. The system allows two more receding attempts. After the third incorrect attempt, the word WAIT is
displayed. A period of 10 minutes must pass and the word CODE must again be displayed before receding can be successful. The radio must be left on
during this period. This measure is meant to prevent receding of the radio by randomly entering numbers.
If the correct antitheft code has not been entered after nine separate attempts -and therefore after two 10-minute wait intervals- the radio will lock for
24 hours to prevent any further receding attempts. The radio must be left on with the ignition key in position 1 during this period in order for it to
reenter the code mode. Code cards should not be stored in the glove compartment. During vehicle service at an authorized Mercedes-Benz dealer, we
recommend that you leave one card with your service advisor. Thus, if the battery is disconnected, the service advisor can recede the radio before the
car is returned to you. If the car is equipped with a Mercedes-Benz antitheft alarm system, the alarm will sound should the radio be removed from the
console while the alarm system is armed.
If you have difficulty reprogramming the radio or if the reprogramming function fails to operate, please contact your authorized Mercedes-Benz
dealer.
Remove/Install APS Radio and Navigation Operating Unit
Removing And Installing APS Radio And Navigation Operating Unit
Illustrated On Model 129
1
Connect quiescent current retention unit
See "Commercially Available Tools" given below.
2
Disconnect and connect ground lead from battery
3
Remove radio and navigation operating unit (APS) (A2/29)
NOTE: For this purpose, insert removal plates (1) Press back retaining springs (arrow) on removed radio and navigation operating unit (APS)
and pull out removal plates (1)
4
Disconnect electrical connectors on rear of radio and navigation operating unit (APS) (A2/29)
5
Activate unit code for APS
NOTE: Is necessary only when a new radio and navigation operating unit is put into operation for the first time
6
Install in opposite order
NOTE: Voice prompt is loaded automatically within 20 minutes after connecting the battery
Commercially Available Tools