Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2000 Mercedes Benz S430FACTORY OEM SERVICE PROCEDURE
Steering Lock
- Steering lock mechanism is designed to prevent ignition key from being removed when parking lock is not engaged. When parking lock is not engaged and brake pedal is not operated, locking pawl rides on outer edge of detent plate. See Fig 1 . Shift and locking valve are held in position in front of blocking cam against force of pressure spring from control cables. Ignition switch CAN NOT be turned to "0" position and key CAN NOT be removed.
- To remove ignition key, move selector lever to "P" position and operate brake pedal. Force of tension spring pulls locking pawl under stop of detent plate and pressure spring pushes shift and locking valve off blocking cam enabling blocking cam to turn. See Fig 2 . Ignition switch can now turn to "0" position and key can be removed.
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.