2016 Tesla Model S — A/C Refrigerant & Oil Specs

Quick answer

• Refrigerant: R-134a (most 2016 Model S). Always verify the under‑hood label; a few late-production or market variants may differ.
• Full system charge: Commonly labeled around 750 g (≈26.5 oz). Exact charge varies by configuration; use the value on your vehicle’s A/C label.
• PAG oil type/amount: Not applicable. Tesla specifies non‑conductive POE (ND‑11) for the high‑voltage electric compressor. Do not use PAG oil. Oil quantity is per OEM service procedures and component replacement; do not add oil during a routine recharge.
• Service ports: Under the front trunk (frunk) service area. Low‑side port is on the larger suction line near the chiller/compressor assembly; high‑side port is on the smaller liquid line near the condenser/drier module. Access typically requires removing the front service panel/trim.

Why R-1234yf matters

Many 2014+ vehicles transitioned from R‑134a to R‑1234yf. R‑1234yf is more environmentally friendly (very low GWP) but costs significantly more per pound and requires dedicated recovery/recycle/recharge equipment. If your under‑hood label specifies R‑1234yf, you must service it with an SAE J2843-compliant machine and fittings; R‑1234yf cannot be substituted with R‑134a.

For the 2016 Tesla Model S, most North American cars were filled with R‑134a from the factory. Always confirm the refrigerant printed on the vehicle’s A/C specification label before servicing—do not rely on model year alone.

Recharge procedure (high-level)

• Verify refrigerant type and charge amount on the A/C label. Note: Tesla’s electric A/C compressor uses ND‑11 (POE) oil only; never introduce PAG oil or cross‑contaminate equipment/hoses with PAG residues.
• Safety/vehicle prep: Power down per OEM procedure (Service Mode), observe high‑voltage safety, and protect the frunk area. Use equipment and hoses dedicated to ND‑11 systems to prevent insulation faults.
• Recover: Use an approved recovery machine to remove and measure the existing charge.
• Evacuate: Pull vacuum for 30–45 minutes, then perform a decay/leak check. EV systems with large thermal management circuits may need longer evacuation to remove moisture.
• Charge by weight: Add the exact mass shown on the label (for many 2016 Model S this is around 750 g R‑134a, but charge the value specified for your VIN). Do not charge by pressure. Follow machine prompts for initial liquid charge and final vapor top‑off if required.
• Verify operation: Enable A/C, confirm compressor engagement, check vent temps, line temperatures, condenser fan operation, and scan for HVAC fault codes with OEM-capable tooling.

Common A/C problems for this generation

• Electric compressor issues: Internal faults, noise, or insulation (HV isolation) faults can occur—often worsened by contamination with the wrong oil. Only ND‑11 or equivalent non‑conductive POE is acceptable.
• Condenser/receiver‑drier leaks: Stone impacts or corrosion at the integrated drier end tank are common causes of slow leaks.
• Chiller block and line O‑rings: The battery/cabin shared chiller and associated quick-connects can seep, leading to gradual loss of performance.
• TXV or solenoid control problems: A sticking expansion valve or valve control fault can cause erratic vent temps and frosting.
• Clogged condenser/airflow issues: Debris in the front condenser stack or inoperative condenser fans/shutters reduce heat rejection and A/C performance.
• Service port and Schrader core leaks: Dye or oil residue around ports is a giveaway; replace cores and caps if leaking.

OEM service info

• Charge/oil specs: Always follow the under‑hood A/C label and the Tesla Service Manual for your VIN. Charge amounts vary by configuration.
• Oil type: Tesla specifies ND‑11 (POE) for the high‑voltage electric compressor. PAG 46/100/150 must not be used.
• Procedures/tools: Tesla Toolbox/Service Mode provide guided steps for disabling HV systems, evacuating/charging, and running HVAC self‑tests. Use A/C machines and hoses that are clean and dedicated to POE/ND‑11 to maintain dielectric strength.

When to call a pro

• If you don’t have an RRR machine capable of precise charge‑by‑weight.
• Any time the system is empty (indicates a leak that should be located and repaired before charging).
• If the vehicle flags HVAC or high‑voltage isolation faults.
• After component replacement requiring oil balancing (compressor, condenser/drier, evaporator, or chiller).

Safety disclaimer: Servicing mobile A/C systems requires EPA Section 609 certification in the U.S. R‑1234yf systems must be serviced with compliant equipment and procedures. High‑voltage EV HVAC systems present additional risks—follow OEM safety procedures and use ND‑11 oil only.

Find a certified A/C shop on Repairius.