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.
Vacuum Diagrams: Introduction
This article contains underhood views or schematics of vacuum hose routing. Use these vacuum diagrams during the visual inspection. This will assist in identifying improperly routed vacuum hoses, which cause driveability and/or computer-indicated malfunctions.
| Model | Engine | See Fig. | ||
|---|---|---|---|---|
| C230 Kompressor | 111.981 | (1) | ||
| C240 | 112.912 | Fig 1 | ||
| C320 | 112.946 | Fig 1 | ||
| C32 AMG | 112.961 | (1) | ||
| CL500 | 113.960 | Fig 1 | ||
| CL55 AMG | 113.982 | (1) | ||
| CL600 | 137.970 | (1) | ||
| CLK320 | 112.940 | Fig 1 | ||
| CLK430 | 113.943 | Fig 1 | ||
| CLK55 AMG | 113.984 | (1) | ||
| E320 | 112.941 | Fig 1 | ||
| E430 | 113.940 | Fig 1 | ||
| E55 AMG | 113.980 | (1) | ||
| G500 | 113.962 | (1) | ||
| ML320 | 112.942 | Fig 1 | ||
| ML500 | 113.965 | Fig 1 | ||
| ML55 AMG | 113.981 | (1) | ||
| S430 | 113.941 | Fig 1 | ||
| S500 | 113.960 | Fig 1 | ||
| S55 AMG | 113.982 | (1) | ||
| S600 | 137.970 | (1) | ||
| SL500 | 113.961 | Fig 1 | ||
| SL600 | 120.983 | Fig 2 | ||
| SLK230 Kompressor | 111.983 | (1) | ||
| SLK320 | 112.947 | Fig 1 | ||
| SLK32 AMG | 112.960 | (1) | ||
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Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.