Have a battery discharge problem in my 87 190D 2.5 N/A. I have installed a rebuilt alternator and new OPTIMA red top. The Alt charges well, but the BAT discharges over the course of 2 weeks or so when I am on the road. I have checked the mA drain and it is about 75 or so, I removed all the fuses and relays and no change detected. It is obviously intermitent. I have been having some issues with Central Locking Sys; it is flat after a few days. I may have a small leak causing the elec. vac pump to cycle on but the books says it only runs for 1 or 2 minutes and then shuts off...for how long, it doesn't say. The question is 1) Can the vac pump cycle enough to run a BAT down over the course of 14 days? 2) Is there an easy way to disable the system? Just pull fuse 12? Also, there appears to be VERY little info about the peculiarities of the W201 CLS. Anyone have any similar problems? Solutions? Thanks.......