I just completed the replacement of the lower front drivers side seat spring in the 300SD with the new "updated" style seat spring (there is another thread somewhere in here that provides pics of the old and new style side by side). By far this has got to be one of the harder diy'er jobs that I have completed. Took a solid 5 hours but in my opinion it is one of the jobs that offer the most payback. I would recommend it to anyone. Your back will appreciate it
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In doing this job I ran the battery down. Not exactly sure why but if anyone has an electrical schematic for this car I would appreciate a copy. I suspect that the way to prevent this from happening is to disconnect the battery after seat adjustments are made to access the various screws. I am thinking it is alarm related in the fact that when the drivers seat is disconnected the battery goes dead
. I imagine I will eventually get around to disabling the alarm. I really don't want it in operation.