Refrigerant in the air conditioning system

An official technical label positioned inside the engine bay provides precise specification details regarding the exact type and charge quantity of refrigerant utilized in the climate control system of your Seat Leon.

This identification sticker is located at the front of the engine compartment, positioned right near the high-pressure and low-pressure refrigerant service valves.

Detailed information on the refrigerant used

If the specification label on your vehicle lists R1234yf as the system refrigerant, the climate control setup contains fluorinated greenhouse gases.

If the designated refrigerant type is listed as R744 (carbon dioxide), the air conditioning loop operates without fluorinated gas compounds.

This technical transparency complies directly with Regulation (EU) 2024/573 on fluorinated greenhouse gases, specifically Article 12 governing product labelling and equipment information requirements enforced from 1 January 2025 onwards.

Refrigerant oil in the air conditioning

Along with gaseous refrigerant, the compressor circuit is charged with a specialized synthetic refrigerant lubricant oil. To determine the exact viscosity specification and oil volume required for your Seat Leon, consult a qualified automotive specialist workshop.

SEAT strongly recommends having all climate control work handled by an official SEAT service partner.

Warning: Maintenance of the air conditioning system must be performed by qualified specialists.

Type of refrigerant.

Type of refrigerant oil

Refer to the workshop information (available only at SEAT official services).

Maintenance of the air conditioning system must be performed by qualified specialists.

Flammable refrigerant.

Ensure all components are properly disposed of. Do not install components removed from end-of-life vehicles or recycled components in your vehicle.

DANGER Servicing or opening the high-pressure air conditioning loop by untrained, non-certified personnel presents severe hazards and can lead to catastrophic injuries or fatalities.

• For any air conditioning system repairs, evacuation, or recharging, rely exclusively on certified technicians trained according to recognized industry standards, such as SAE J2845 certification requirements.
• Strictly follow the maintenance schedules and inspection intervals recommended by SEAT. Contact a specialized facility or an authorized SEAT service center for all routine servicing.

DANGER The A/C system refrigerant is flammable; improper handling, servicing, or exposure to open flames during repair work can trigger fire hazards resulting in severe or fatal injuries.

The refrigerant gas is held under high internal pressure and can explode if heated or subjected to extreme thermal stress, posing a fatal threat to bystanders.

When escaping refrigerant comes into contact with glowing engine parts or hot exhaust manifolds, it decomposes into hazardous, toxic vapors. Inhaling these thermal decomposition gases can cause severe chemical poisoning or death.

• Entrust all climate control component replacement and leak repairs strictly to qualified service professionals.
• Keep the engine compartment away from open flames, electrical sparks, grinding sparks, or hot surface ignition sources whenever servicing the system.

NOTICE Attempting to repair a damaged evaporator core or installing replacement climate control components salvaged from scrap vehicles or unverified recycling sources will cause system failure and severe contamination of your Seat Leon.

• Never install recycled, second-hand, or salvaged evaporator cores taken from end-of-life donor vehicles.

Information on the EU chemicals regulation REACH

In accordance with the statutory mandates of the European Chemicals Regulation REACH, SEAT, S.A. maintains comprehensive documentation regarding chemical substances that may be contained within vehicle materials and structural components.

You can request detailed REACH chemical compliance information directly from any authorized SEAT dealership.