300SDL (126.125) L6-3.0L DSL Turbo (603.961) (1987)
![background image](/mercedesbenz/300sdl_(126.125)/l6-3.0l_dsl_turbo_(603.961)/Page-1670002.png)
4. Disconnect red 10-pin control unit plug under footrest.
5. Disconnect plug-connector from buffer battery/reserve power source.
4. Disconnect red 10-pin control unit plug under footrest.
5. Disconnect plug-connector from buffer battery/reserve power source.