2015 Jeep Grand Cherokee: A/C Refrigerant & Oil Specifications

Quick Answer

• Refrigerant Type: R-1234yf. The 2015 Grand Cherokee was among the first vehicles to use this new, more environmentally friendly refrigerant.
• Full System Charge: 21.16 oz (600g). This is a precise measurement; charging by weight is critical for this system.
• PAG Oil Type: PAG 46. Use only this specific viscosity to prevent compressor damage.
• PAG Oil Amount: 4.73 oz (140 mL). This is for a full system replacement; add less if only replacing certain components.
• Low-Side Service Port Location: Near the firewall, on the passenger side of the engine bay.
• High-Side Service Port Location: In front of the radiator, near the hood latch.

Why R-1234yf Matters

The transition from R-134a to R-1234yf is a significant one. Here's what you need to know:

• Cost: R-1234yf is significantly more expensive than R-134a, which can make A/C repairs more costly.
• EPA Regulations: The EPA has mandated this change due to R-1234yf's lower global warming potential. This means you can't simply "top off" your system with a can of refrigerant from the auto parts store. A certified technician with the proper equipment must handle the recovery and recharge process.
• Recovery Machine Requirements: Servicing R-1234yf systems requires a dedicated recovery machine. Cross-contamination with R-134a can cause system damage and is illegal.

Recharge Procedure

A proper A/C recharge is not a simple "top-off." Here's a high-level overview of the correct procedure:

1. Evacuate the System: A certified technician will use a recovery machine to safely remove any remaining refrigerant from your Grand Cherokee's A/C system.
2. Vacuum the System: The system is then placed under a deep vacuum to remove any air and moisture, which are detrimental to A/C performance and longevity.
3. Charge by Weight: The precise amount of R-1234yf (21.16 oz) is then weighed and added back into the system. Charging by pressure is not accurate and can lead to over or undercharging, both of which can cause damage.

Common A/C Problems for This Vehicle

The 2015 Jeep Grand Cherokee, like any vehicle, can experience A/C issues. Here are a few common culprits:

• Compressor Failures: The A/C compressor is the heart of the system. If it fails, you'll likely hear grinding noises and have no cold air. A failing compressor can also contaminate the entire system with debris, making for a more extensive and expensive repair.
• Condenser Issues: The condenser, located in front of the radiator, is susceptible to damage from road debris. A punctured condenser will leak refrigerant, causing the A/C to stop working.
• Evaporator Leaks: The evaporator is located inside the dashboard and can develop leaks over time. This is often a labor-intensive repair, as the dashboard may need to be removed for access.

When to Call a Pro

Due to the specialized equipment and EPA regulations involved with R-1234yf, it's highly recommended that you leave any A/C service to a certified professional. Attempting a DIY repair can lead to system damage, personal injury, and legal trouble.

Disclaimer: The information on this page is for reference only. Always consult your vehicle's service manual or a certified technician for the most accurate and up-to-date information. You must be EPA 609 certified to legally service automotive A/C systems.

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