Mercedes-Benz ML550 Expansion Valve (Orifice Tube) Replacement at your home or office.

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Expansion Valve (Orifice Tube) Replacement Service

How much does a Expansion Valve (Orifice Tube) Replacement cost?

On average, the cost for a Mercedes-Benz ML550 Expansion Valve (Orifice Tube) Replacement is $350 with $131 for parts and $218 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2012 Mercedes-Benz ML550V8-4.7L TurboService typeExpansion Valve (Orifice Tube) ReplacementEstimate$538.68Shop/Dealer Price$628.35 - $843.38
2014 Mercedes-Benz ML550V8-4.7L TurboService typeExpansion Valve (Orifice Tube) ReplacementEstimate$490.68Shop/Dealer Price$580.40 - $795.46
2008 Mercedes-Benz ML550V8-5.5LService typeExpansion Valve (Orifice Tube) ReplacementEstimate$556.64Shop/Dealer Price$681.50 - $965.36
2011 Mercedes-Benz ML550V8-5.5LService typeExpansion Valve (Orifice Tube) ReplacementEstimate$556.64Shop/Dealer Price$681.41 - $965.20
2013 Mercedes-Benz ML550V8-4.7L TurboService typeExpansion Valve (Orifice Tube) ReplacementEstimate$490.68Shop/Dealer Price$580.43 - $795.52
2010 Mercedes-Benz ML550V8-5.5LService typeExpansion Valve (Orifice Tube) ReplacementEstimate$556.64Shop/Dealer Price$681.50 - $965.36
2015 Mercedes-Benz ML550V8-4.7L TurboService typeExpansion Valve (Orifice Tube) ReplacementEstimate$502.68Shop/Dealer Price$592.07 - $806.88
2009 Mercedes-Benz ML550V8-5.5LService typeExpansion Valve (Orifice Tube) ReplacementEstimate$568.14Shop/Dealer Price$693.95 - $978.53
Show example Mercedes-Benz ML550 Expansion Valve (Orifice Tube) Replacement prices

What is the Expansion Valve (Orifice Tube) all about?

The air conditioning system in your vehicle depends on the refrigerant that circulates in the A/C system. In particular, the evaporator core inside the passenger compartment requires a specific, metered amount of refrigerant in order to efficiently cool the interior. The expansion valve, also known as an orifice tube in some designs, regulates the pressure of refrigerant that enters the evaporator. The tube is also where liquid refrigerant under pressure converts to a gaseous form. The gaseous refrigerant absorbs heat from air passing through the evaporator core and carries it to the condenser where the heat is removed.

In a situation where the orifice tube is either blocked or stuck open, the air conditioning will not cool properly. Too much refrigerant will cause frost on the core and prevent air from passing through to cool the air temperature. Too little refrigerant passing through the evaporator means not enough heat is absorbed and the interior is insufficiently cooled. In either situation, you may need to replace the expansion valve/orifice tube.

Keep in mind:

  • Air conditioning work needs to be completed by a trained and licensed professional in nearly all circumstances because refrigerants are regulated substances.
  • It is possible for the expansion valve to become blocked by excessive moisture in the air conditioning system, which would indicate a receiver/drier problem.

How it's done:

  • The AC refrigerant is removed from the system
  • The defective expansion valve is removed
  • The new expansion valve is installed
  • The a/c system is recharged with refrigerant
  • The a/c system is tested for leaks and proper operation

Our recommendation:

Whenever air conditioning repairs or refrigerant recharges are performed, have the expansion valve inspected for proper operation. If the expansion valve is not opening or closing properly, you may need one of our expert technicians to replace the expansion valve or orifice tube.

What common symptoms indicate you may need to replace the Expansion Valve (Orifice Tube)?

  • Air conditioning doesn’t cool sufficiently
  • Air conditioning expansion valve is frosty but the air conditioning isn’t blowing cold air

How important is this service?

Air conditioning is a comfort item in a vehicle, not a safety issue. However, the air conditioning also removes moisture in the air for the defrost setting to clear your windows. If the air conditioning is not working properly, your vision may be impaired in humid or very cold weather.

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Excellent Rating

(24)

Rating Summary
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Ben

41 years of experience
1433 reviews
Ben
41 years of experience
Mercedes-Benz ML550 V8-5.5L - Power steering fluid is brown or black - Houston, Texas
Ben showed up ready to work about 20 minutes before the appointment and greeted us with a big smile. It was a big surprise to see another military person coming to help a military person. He turned out to be the best mechanic I've had to work on my ML550. Thank you Marine for coming to help the Army again. Thank you very much and God Bless!

Scott

36 years of experience
907 reviews
Scott
36 years of experience
Mercedes-Benz ML550 V8-5.5L - Control Arm Assembly Replacement (Front Upper Left, Front Upper Right) - Scottsdale, Arizona
He did an excellent job I would highly recommended him If I require service in the future I Will request Scott

Theodore

16 years of experience
1610 reviews
Theodore
16 years of experience
Mercedes-Benz ML550 V8-4.6L Turbo - Car Battery Replacement - Renton, Washington
Professional, Quick

Manuel

32 years of experience
581 reviews
Manuel
32 years of experience
Mercedes-Benz ML550 V8-5.5L - Brake Pads Replacement (Front) - Dana Point, California
Manuel was awesome. Showed up on time and was outstanding making sure he kept everything clean while installing new rotors and breaks. He went over everything with me and no doubt I will request him again for my next service

Excellent Rating

(24)

Rating Summary
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Number of Mercedes-Benz ML550 services completed
264+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
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