🚨 1992 Mercedes-Benz S420 W140: Emergency Neutral
The W140 S-Class uses a floor-mounted console shifter with mechanical shift interlock that's simpler than later electronic systems.
🧰 Drafted with AI under the editorial review of Chris Hackleman & Jeff Moore — details like the exact override location may vary by trim; verify visually before prying anything.
⚠️ Chock the wheels first — neutral means the car can roll. Set the parking brake while you work, never stand downhill of the vehicle, and try a 12-volt jump before any override: power fixes most stuck-in-park problems instantly.
The procedure
- Ensure the vehicle is on a level surface and apply the parking brake firmly
- Turn the ignition to position II (ON) if battery has any power remaining
- Locate the shift lock override button or slot - on W140 models this is typically a small cover on the left side of the shifter base
- Use a small flathead screwdriver or the metal key blade to pry off the override cover if present
- Insert the key or screwdriver into the override slot and press down or pull up (depending on mechanism design)
- While operating the override, press the brake pedal and move the shifter to Neutral
- If no electrical power, the mechanical override should still release the shifter without brake pedal input
- Keep the override engaged until the shifter is fully in Neutral position
Shift-lock override location
Small cover on the left side of the shifter base near the console; early W140 models have a relatively simple mechanical release mechanism
With zero electrical power
The W140 shift interlock is primarily mechanical with some electrical assist. With complete power loss, the mechanical override will still function. Without power, you cannot turn the ignition and the steering will be locked. The vehicle must be loaded onto a flatbed - do not attempt to tow with any wheels on the ground due to steering lock.