Where can I get a used owner's manual for a 2000 m. benz S500?

https://www.cargurus.com/Cars/Discussion-t19836_ds557958
https://www.repairsurge.com/Mercedes-Benz/S420/repair-manual-online
https://www.scribd.com/document/57487652/1995-S320-S420-S500-Owner-s-Manual-Edition-C-unlocked#
https://www.rockauto.com/en/catalog/mercedes-benz,1995,s420,4.2l+v8,1195747,literature,repair+manual,10335

It looks like this should help:

Where is the relay for airmatic suspention pump on 2000 Mercedes S500

If pulling that out and putting it back in doesn't help, here's some more troubleshooting info:

2000 S500 airmatic problem Mercedes Forum Mercedes Benz Enthusiast Forums

LIMP MODE. SEE OWNERS MANUAL

The position and function of the fuses is normally marked on the inside of the fuse box cover and also in the owner's handbook.

there are no free downloads for MB, sorry, u must buy these, u can pick them up cheap on ebay from time to time.

give this website a try www.edmunds.com wish you the best of luck Michigan Man.

Check the owners manual,which contains the fuse diagram and locations.

If you have a owners manual then the method is described there.

www.mbusa.com

you need to have your car scanned for codes. in the mean time take a flat screwdriver and insert it in the slot on the shifter console and release the shift lock. this should allow you to manually shift the vehicle. Your owners manual should tell you about this feature.