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The Mercedes-Benz W140 S600, especially the V12 model, was the flagship S-Class of its era and was packed with advanced features and controls.1 Here are some of the key buttons and their functions, typically found on the center console, dashboard, or doors:
Key Buttons and Functions:
| Area | Button/Key Function | Description |
| Door/Locking | Central Locking Switch (On center console) | Locks and unlocks all doors, the trunk, and the fuel filler cap simultaneously. |
| Trunk Lid Release (Switch near the driver’s seat) | Electrically releases the trunk lid. | |
| Power Closing Assist (Standard on S600) | Not a button, but a key function: a system that softly pulls the doors and trunk lid fully shut after they are lightly closed. | |
| Windows/Sunshades | Power Windows (Switches on door panel) | Controls the windows, often with a “one-touch” automatic feature. |
| Rear Window Sunshade (Button on center console) | Electrically raises or lowers the sunshade on the rear window for passenger comfort and sun protection. | |
| Driving & Safety | Electronic Stability Program (ESP) | Not always a button, but a key function (introduced on the S600 Coupé in 1995, later on sedan): an integrated computer system that improves vehicle handling during difficult conditions. |
| Rear Parking Markers (Pre-1995 models) | Not a button, but a feature: small guide rods that extend from the rear fenders when reverse gear is engaged, aiding parking maneuvers. (Replaced by Parktronic in later models, which is sonar-based). | |
| ASR/Traction Control (May have a switch) | Allows the driver to deactivate the Acceleration Skid Control (ASR) system in some specific conditions (like deep snow). | |
| Climate Control | Automatic Climate Control (Center stack panel) | Various buttons control temperature, fan speed, air distribution, and A/C functions, often with separate controls for driver and passenger (Dual-Zone or Four-Zone on LWB models). |
| REST (Residual Heat Utilization) | Not a button, but a function often tied to the climate controls: allows the passenger compartment to be heated or ventilated for up to 20 minutes after the engine is switched off, using residual heat. | |
| Luxury & Comfort | Power Seats (12-way) (Switches on the door panel or side of the seat) | Controls the electrical adjustment of the seat position, backrest, and head restraint, often integrated with a Memory Function (usually 3 settings). |
| Heated Seats (Buttons near the seat controls) | Activates the seat heating elements in the cushion and backrest. | |
| Interior/Reading Lights (Buttons on the overhead control panel) | Controls for interior dome lights and individual reading lamps. |
The S600’s complexity means its functions are best explored with the owner’s manual, but the items above represent the most notable features controlled by keys or buttons.
