How To FIND charge air conditioning PORT on Toyota Prius Note you need special Toyota ND-11 FREON

Note-
Toyota Prius takes different freon as it is not a mechanical
compressor but an electric compressor.

All 2G and 3G Prius use the special ND-11 compressor oil.

YOU NEED TO ADD PURE R134a freon with NO oil. Then add the ND-11 oil.
Probably best to ADD the oil first.

If you are just topping up just a LITTLE R134a is probably OK.

If you pulled a vaccum and did a system evac
you need to add the ND-11 oil first.

This video shows you where to add the freon.
Make sure the freon is Toyota approved for a Prius.

If you have a Toyota that is not an EV or Hybrid, you are good to go
to add any R134A from http://autozone.com or similar.

However for the Prius with an electric compressur YOU MUST use special FREON:

Some hybrid vehicles use air conditioning compressors that are operated by an electric motor instead of a drive belt. The motor’s insulated windings are immersed in the compressor’s lubricating oil. The oils used in these compressors have high dielectric (non-conductive) properties. DENSO has produced a chart showing that as little as 1% contamination by an improper oil can affect the dielectric properties. If a different type of oil somehow makes its way into one of these compressors, and if the insulation on the windings has become damaged or compromised, a variety of problems may occur.



● The greatest risk is that the oil may conduct high voltage to the compressor case or connected components. A person may receive an electric shock if they touch the compressor, engine, etc. and an appropriate ground.

● Sensors in the compressor case can detect very small voltage leaks. Once a leak is detected, the control system will shut down the compressor