2022 Mercedes-Benz Sprinter Coolant Capacity & Type

The 2022 Mercedes-Benz Sprinter typically holds between 10.5 and 12.0 quarts (9.9 to 11.3 liters) of coolant, depending on the engine and specific configuration.

Quick answer

• Total Cooling System Capacity: 10.5 - 12.0 quarts (9.9 - 11.3 liters)
• OEM Coolant Spec: Mercedes-Benz Specification 325.0, 325.5, or 326.0 / 326.5 (Blue or Pink/Purple, Silicate-containing Hybrid Organic Acid Technology (HOAT) or Silicate-Free Organic Acid Technology (OAT))
• Mix Ratio: 50/50 prediluted or 1 part concentrate to 1 part distilled water

Capacity by engine option

The exact coolant capacity for your 2022 Mercedes-Benz Sprinter will vary slightly based on the engine type and specific options (e.g., rear auxiliary heater):

Always consult your owner's manual for the precise capacity for your specific vehicle configuration.

Flush interval

Mercedes-Benz recommends a coolant flush and refill for the Sprinter generally every 150,000 miles or 15 years, whichever comes first, under normal driving conditions. However, if your Sprinter operates under severe duty conditions such as heavy towing, frequent stop-and-go traffic, extreme temperatures, or off-road use, it's advisable to consider a more frequent inspection and possibly a flush every 75,000 miles or 7 years.

How to refill & bleed

Refilling and bleeding the cooling system on a Mercedes-Benz Sprinter requires careful attention to detail to ensure all air is purged. Here's a general procedure:

1. Drain the old coolant: With the engine cool, place a drain pan under the radiator drain plug and open it. Some Sprinter models may also have engine block drain plugs. Ensure a proper collection of all fluid.
2. Flush (optional but recommended): If performing a full flush, close the drains and fill the system with distilled water, run the engine with the heater on until it reaches operating temperature, then drain. Repeat until the drained water is clear. Consider using a cooling system flush product according to its directions.
3. Refill with new coolant: Close all drain plugs. Slowly add the correct Mercedes-Benz approved 50/50 coolant mixture to the expansion tank until it reaches the MAX line. Use only approved coolant specifications (MB 325.0/325.5 or 326.0/326.5).
4. Bleed the system:
   • Start the engine with the expansion tank cap off. Turn the heater to its maximum setting and fan speed.
   • Allow the engine to idle and reach operating temperature. Observe the coolant level in the expansion tank, adding more coolant as needed to maintain the MAX line.
   • Some Sprinter engines, particularly the diesel variants, may have a dedicated bleed screw located on a hose or near the thermostat housing. Loosening this screw while the engine is running and warmth is felt allows trapped air to escape.
   • Gently squeeze upper and lower radiator hoses to help dislodge air bubbles.
   • Once the engine is at operating temperature and the upper radiator hose is hot, install the expansion tank cap.
   • Drive the vehicle for a short period, then let it cool completely. Recheck the coolant level and top off if necessary. Repeat this check for a few driving cycles.

Mercedes-Benz vehicles are sensitive to air in the cooling system. If you're uncomfortable with this procedure, or if a dedicated vacuum fill tool isn't available, it's best to have a professional perform the refill and bleed process to prevent overheating or damage.

Common cooling system issues

Owners of 2022 Mercedes-Benz Sprinters (and this generation in general) may encounter a few common cooling system issues:

• Coolant Leaks: Due to the complex plumbing and various components, coolant leaks can occur from hoses, the radiator, water pump seals, thermostat housing, or the expansion tank itself. Regular inspection is key.
• EGR Cooler Issues (Diesel Engines): The Exhaust Gas Recirculation (EGR) cooler on diesel Sprinters can sometimes develop internal leaks, leading to coolant loss or contamination of the exhaust system. Symptoms might include white smoke, low coolant, or engine codes.
• Thermostat Failures: A stuck-open thermostat can lead to the engine running too cool, while a stuck-closed one will cause overheating. Both can impact fuel economy and engine longevity.
• Water Pump Failure: Over time, the water pump's bearings or seals can wear out, leading to leaks or reduced coolant circulation. A whining sound or visible leakage near the pump are indicators.
• Auxiliary Heater Core Leaks (if equipped): Sprinters with rear auxiliary heating can develop leaks in the heater core or its associated hoses, often manifesting as a sweet smell inside the cabin or dampness on the floor.

Regular maintenance, including adherence to coolant flush intervals and using only approved Mercedes-Benz coolant, can help mitigate these issues.

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