Last Modified: 11-13-2015 6.6 L Doc ID: RM000002LKO00SX
Model Year Start: 2016 Model: Tacoma Prod Date Range: [08/2015 - ]
Title: AIR CONDITIONING: REFRIGERANT (for HFO-1234yf(R1234yf)): PRECAUTION; 2016 MY Tacoma
[08/2015 - ]
1. PRECAUTIONS FOR REFRIGERANT HFO-1234yf (R1234yf)
(1) The parts used in the refrigerant cycle, the compressor oil, etc. of the HFO-1234yf (R1234yf) system
are not compatible with the conventional HFC-134a (R134a) system.
(b) HFO-1234yf (R1234yf) Refrigerant
(1) Always use HFO-1234yf (R1234yf) as the refrigerant.
o not charge the system with refrigerant near open flames, as HFO-1234yf (R1234yf) is combustible.
When charging the system with refrigerant, make sure the area is well ventilated (especially be careful in
areas where the gas can easily accumulate such as under lifts and in garage pits, as the gas is heavier
Follow any local regulations regarding combustible gases.
Be sure to use a refrigerant recovery unit that is compatible with HFO-1234yf (R1234yf) systems.
The shape of the service port for refrigerant charging has an exclusive design conforming to international
standards for HFO-1234yf (R1234yf) to prevent improper refrigerant charging.
(c) Compressor Oil
(1) Always use ND-OIL 12 as the compressor oil.
he oil used for HFC-134a (R134a) systems (ND-OIL 8) does not work well in HFO-1234yf (R1234yf)
systems. If the oil used for HFC-134a (R134a) systems (ND-OIL 8) is used in an HFO-1234yf (R1234yf)
system, it will result in degradation of the refrigerant and deterioration of resin parts.
(2) When parts of the air conditioning system are removed, quickly block off any areas that are exposed to
the outside air with plugs, vinyl tape, etc., as the oil used for HFO-1234yf (R1234yf) systems absorbs
(3) Do not allow the compressor oil to splash, as the oil used for HFO-1234yf (R1234yf) systems has
harmful effects on acrylic resins.
(1) When evacuating the system, be sure to use a refrigerant recovery unit, refrigerant recycler and
refrigerant charger that are compatible with HFO-1234yf (R1234yf) systems.
(e) Refrigerant Gas Leak Inspection
(1) Use a gas leak detector to check for refrigerant gas leaks.
e sure to use a gas leak detector that is compatible with HFO-1234yf (R1234yf) systems.
(2) Ignition switch off when checking for refrigerant leaks.
If the engine is running when checking for leaks, the leaking gas becomes diluted in the air by the fan and