Chrysler 2005 Crossfire SRT6 Service Manual page 4192

HEATING & AIR CONDITIONING - SERVICE INFORMATION 24 - 63
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This vehicle is equipped with a common HVAC housing assembly. The system combines Air Conditioning, Heating,
and Ventilating capabilities in a single unit housing mounted under the Instrument Panel.
DESCRIPTION - RESIDUAL ENGINE HEAT SYSTEM (REST)
The Residual Engine Heat System (REST) system
enables the vehicle to be heated with the Ignition
"OFF". The REST switch (4) in the Heater-A/C Con-
trols activates this system.
DESCRIPTION - REFRIGERANT SYSTEM SERVICE PORT
Note: Unique service port coupler sizes are used on the R-134a system to ensure that the refrigerant sys-
tem is not accidentally contaminated by the use of the wrong refrigerant (R-12), or refrigerant system ser-
vice equipment.