Can’t imagine there will be the opportunity to buy a final year S600 very often given they’re so incredibly rare. And black on black is prime!

Nice car, sad that there is such a laundry list of items that require attention. This is a good example of "upkeep" where an owner does the basic oil/fluid changes but ignores the other systems in the car.

As a former owner of a number of W140s, none of these are dealbreakers, but if you're not a DIY'er you'll be dropping some significant coin to resolve them. Soft close system is not easy to repair depending on the issue and will require additional troubleshooting to resolve. The orthopedic seats can't be fixed - if the bladders are leaking you're done with that part of the system. The rear window shade requires removal of the back seat and parcel shelf to access and possibly repair, depending on what part(s) have failed. The center console and drink holder are an easy fix. This all points to a lack of attention to detail when it comes to care and maintenance.

These are some of the bits that make these cars stand out from their counterparts of the time. While they don't affect the drivability, their inability to function takes away from the driving experience and ultimately the ownership enjoyment of the car. Granted, some things can't be addressed due to lack of parts availability, but other things can. Were they fully functional this car would be a standout in the market. Instead, they're a detriment.

Sorry for the unvarnished nature of the comments, but it makes me sad to see a wonderful car that was a competitor to such names as Rolls Royce and Bentley in such condition. Take all the amenities away that made it unique, like the door soft close or the rear window shade and it's no better than a tarted-up C or E Class with a V12.

GLWA!

Good to hear, happy to help :-)  So the pump itself is operational, the next question is timing.  Close the door and watch - it'll pull in, then you'll see it relax.  You may also hear a light "puff" from the pump when it vents.  Anything more than 2 seconds after pulled in is a waste.  4 seconds is perfectly fine.  At about 8 seconds it'll time out and won't work until you do the fuse thing again.  If all vent at about the same duration of 6-8 seconds, then it's likely timing on the limit switch inside the pump.  If one (or two) are noticeably longer than the others, then you've got a leak in one of those lines.  

This is a VERY rare car.  Numbers noted below are greatly exaggerated.  There were FOURTEEN S600 LWB Sedans sold in North America for MY-1999.  As previously noted they were really all re-badged 1998 models remaining in MB inventory before the new 2000 W220 was ready.  Also 15 S600 Coupes, 19 S500 Coupes, and 1,341 S500 LWB sedans.  I would suspect the 139 figure noted below was global sales for that final MY swan song.  I don't have global figures by year for the W140 run, only total units (there were 32,517 total S600 LWB sedans, along with 3,399 of the SWB that were never sold in NA).  I do have the US sales figures by MY for all variants of the W140.

@Oldtown - there's a quick and easy check for the soft close doors to see if the pump itself is operational.  In the trunk, passenger sidewall, open fuse box and pull fuse #9 (top fuse, 3rd column).  Wait 30 seconds, re-insert and now test doors.  If you can now hear the pump run and see the soft-close functioning, then you either have a leak somewhere or there's a timing issue on the limit switch inside the pump.   What happens is the doors/trunk can "time out" for any number of reasons after which they won't work until the system is reset.  This happens individually but over time can affect all if each individually fails at one time or another. The limit switch is an easy DIY fix (youtube videos).  Leak is a bitch to troubleshoot and repair.  Pump not operational = new pump, about $250.  Fuse missing in fusebox, there's your answer!

I see this has the orthopaedic seat option on the front seats. Is this still functional? Parts for these (the inflatable bladders, specifically) are no longer available.

Hello, could you tell us mechanically what may need attention? Any issues at all you know of. Is soft close working on doors and trunk, all windows work, any suspension issues, warning lights, concerning noises, etc.? Thank you....

@oldtown. thanks for reply.  Nice car.  Not making too many 12 cylinders these days.

Seems like the accident in 2000 was a serious crash, considering that the airbag deployed.  Any after effects?  Frame damage?  Thank you.  

@dextrag is that for 1999 or total?

The correct number is 139, but it doesn't matter because this car is as rare as it gets, and there definitely aren't that many left on the road today. For a piece of history, and the last great Mercedes-Benz, look no further.

Additional photos have been added showing underside, various maintenance records, the original window sticker and all four wheels. Videos showing engine idle and a walk around have been added to the listing as well. 

This is the last year for the W140 S600. Wish we knew an exact unit number for this model year, I know of 48 coupe/sedan models so far, including this. This should should set a standard, since it is one of very few to be offered for sale on an auction site. 

Some undercarriage shots would be helpful here, if it was actually a California car for the vast majority of it's life it should be pretty nice. The 99's are coveted for their rarity and last of the line status, even though they are merely leftover 98's in actuality.

This one looks a little rough around the edges, but it's still relatively low mileage and a great detail would fix a bunch of the issues you see at first glance.  Madera Concepts can fix the center console wood which I highly recommend.

Long may the M120 reign, the greatest production V12 of all time in my opinion.  It doesn't have the peak numbers of the sports cars, but it has a power band flatter than Kansas and it's built like a brick shithouse. It's happy to run very hard all day long and it will never let you down.  Of all the W140 maintenance bills I have paid, nothing was ever related to an engine failure of any kind.

GLWA