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 GLB250 BaseFACTORY OEM SERVICE PROCEDURE
Quick Lookups: Fluids
| FLUID CAPACITIES | |||||||
|---|---|---|---|---|---|---|---|
| Fluid Type | Application | Standard | Metric | Fluid Spec | Note | S/H | |
| Air Cond Compressor Oil | 2.80 OZS. | 0.08 L | PAG Oil | Only use products recommended by Mercedes Benz. | S | ||
| Air Cond Refrigerant | 1.30 LBS. | 0.58 KG | R-134a | For further details see "Air conditioner specification label". | S | ||
| Automatic Transmission Fluid | 5.81 QTS. | 5.49 L | MB Automatic Transmission Fluid | Only use products recommended by Mercedes Benz. Approximate capacity. | S | ||
| Brake Fluid | N/A | N/A | MB Brake Fluid | Only use products recommended by Mercedes Benz. | S | ||
| Engine Coolant | 10.57 QTS. | 10 L | MB Anticorrosion/Antifreeze | Only use products recommended by Mercedes Benz. Approximate capacity. | S | ||
| Engine Oil | w/Filter | 5.80 QTS. | 5.48 L | MB Approved Synthetic Engine Oil - SAE 0W-30, 5W-30, 5W-40 or 0W-40 | Use Mercedes-Benz approved engine oil only. See bulletin No. S-0473-08B (Mercedes-Benz Factory Approved Service Products). Approximate capacity. | S | |
| Fuel Tank | 15.90 GALS. | 60.18 L | S | ||||
| Windshield Washer Fluid | 4.23 QTS. | 4 L | MB Windshield Washer Concentrate "MB Summer Fit" and water for temperatures above freezing or MB "MB Winter Fit" and water for temperatures below freezing. | 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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