300SL (129.061) L6-3.0L (104.981) (1991)
Navigation System: Service and Repair
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
CAUTION: On Model 210 insulate cable terminal on ground lead for protection against unintentional contact between disconnected
ground lead and ground connection point W10
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
Commercially Available Tools