2016 Mercedes-Benz Sprinter A/C Refrigerant & Oil

Quick Answer

• Refrigerant Type: R-134a (some very early 2016 models might have R-134a, but most will be R-1234yf due to the transition period. Always check the underhood label).
• Full System Charge:
  • R-134a: Approximately 28.2 oz (800g)
  • R-1234yf: Approximately 22.9 oz (650g) (Always verify with the underhood A/C sticker, as capacities can vary slightly based on specific configurations like rear A/C.)
• PAG Oil Type: PAG 46
• PAG Oil Amount: Approximately 4.7-5.4 fl oz (140-160 mL) for single evaporator systems. (Verify total system capacity as per manufacturer specifications, especially with rear A/C.)
• Low-Side Service Port Location: Typically located on the larger-diameter aluminum line running from the evaporator (firewall) to the compressor.
• High-Side Service Port Location: Typically located on the smaller-diameter aluminum line running from the condenser (front of vehicle) to the expansion valve/orifice tube.

Why R-1234yf Matters

For your 2016 Mercedes-Benz Sprinter, understanding the refrigerant type is crucial, especially regarding the transition from R-134a to R-1234yf. This change was driven by environmental concerns. R-1234yf has a much lower Global Warming Potential (GWP) compared to R-134a, making it more environmentally friendly.

However, this newer refrigerant comes with its own considerations:

• Cost: R-1234yf is significantly more expensive than R-134a.
• EPA Regulations: The EPA mandates proper handling and recovery of all refrigerants, particularly R-1234yf, due to its properties. It is illegal to intentionally vent refrigerants into the atmosphere.
• Recovery Machine Requirements: Servicing an R-1234yf system requires specialized recovery and recharging equipment designed specifically for this refrigerant. Mixing refrigerants or using incompatible equipment can damage the A/C system and the service equipment.

Always check the A/C system sticker under the hood to confirm the refrigerant type your specific Sprinter uses. This sticker is the definitive source of information for your vehicle's A/C system specifications.

Recharge Procedure

Recharging an A/C system is not as simple as just adding refrigerant until pressures look good. For a proper, lasting repair, the system needs to be evacuated and charged by weight. This is critical for several reasons:

1. Evacuation: A vacuum pump removes air and, more importantly, moisture from the system. Moisture (water) inside an A/C system reacts with refrigerant to form corrosive acids, leading to component failure and expensive repairs. It also creates ice blockages.
2. Proper Charge by Weight: The correct amount of refrigerant, measured by weight, is essential for optimal performance. Too little refrigerant will result in poor cooling and potential compressor damage due to lack of lubrication. Too much refrigerant can lead to excessively high pressures, reduced cooling efficiency, and component failure (such as the compressor or pressure relief valve).

Always follow manufacturer specifications for refrigerant type and charge amount. Do not rely solely on pressure gauges, as ambient temperature and humidity heavily influence pressure readings.

Common A/C Problems for This Vehicle

While the Mercedes-Benz Sprinter is a robust vehicle, its A/C system can develop common issues:

• Compressor Failures: The compressor is the heart of the A/C system. Common causes of failure include insufficient refrigerant (leading to inadequate oil circulation), excessive system pressure, internal wear, or clutch issues (if equipped).
• Condenser Issues: The condenser, located at the front of the vehicle, is susceptible to damage from road debris. Fins can become clogged with dirt and debris, reducing its ability to dissipate heat, leading to poor cooling performance. Leaks can also develop due to corrosion or impact.
• Evaporator Leaks: The evaporator, located inside the dashboard, can develop leaks over time, often due to corrosion. This is a more involved repair as it requires significant disassembly of the dash.
• Electrical Issues: Wiring problems, fuse issues, or faulty pressure switches can prevent the A/C system from engaging or functioning correctly.

When to Call a Pro

Diagnosing and repairing modern automotive A/C systems, especially those using R-1234yf, requires specialized tools, knowledge, and EPA 609 certification. Attempting DIY repairs without the proper training and equipment can be dangerous, harmful to the environment, and can lead to more extensive and costly damage to your vehicle's A/C system. For safety and compliance, always consult a certified professional when:

• Your A/C system is not blowing cold air.
• You hear unusual noises coming from the A/C system.
• There are visible leaks or unusual odors.
• You suspect your system needs a recharge or repair.

Safety Disclaimer: Automotive A/C refrigerants are under pressure and can cause severe frostbite if they come into contact with skin or eyes. Always wear appropriate personal protective equipment, including safety glasses and gloves, when working near A/C components. Handling refrigerants without EPA 609 certification is illegal.

Find a certified A/C shop on Repairius.