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.
2021 Mercedes Benz CLS450 BaseFACTORY OEM SERVICE PROCEDURE
Quick Lookups: Fluids
| FLUID CAPACITIES | |||||||
|---|---|---|---|---|---|---|---|
| Fluid Type | Application | Standard | Metric | Fluid Spec | Note | S/H | |
| Automatic Transmission Fluid | 10.57 QTS. | 10 L | MB Automatic Transmission Fluid | Only use products recommended by Mercedes Benz. Approximate capacity. | S | ||
| Brake Fluid | 0.53 QTS. | 0.5 L | MB Brake Fluid | Only use products recommended by Mercedes Benz. | S | ||
| Engine Coolant | Low Temperature Circuit | 3.17 QTS. | 2.99 L | MB Anticorrosion/Antifreeze | Only use products recommended by Mercedes Benz. Approximate capacity. | S | |
| Engine Coolant | Main Circuit | 12.68 QTS. | 11.99 L | MB Anticorrosion/Antifreeze | Only use products recommended by Mercedes Benz. Approximate capacity. | S | |
| Engine Oil | 10.00 QTS. | 9.46 L | MB Approved Synthetic Engine Oil | Use Mercedes-Benz approved engine oil only. See bulletin No. S-0473-08B (Mercedes-Benz Factory Approved Service Products). Approximate capacity. | S | ||
| Transfer Case Fluid | 0.69 QTS. | 0.65 L | MB Transfer Case Fluid | Only use products recommended by Mercedes Benz. Approximate capacity. | S | ||
Factory Service Tools
Use the Manual With the Right Hardware
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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.
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