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Home >> Ford >> 2015 >> Escape S >> Repair and Diagnosis >> External Pages >> Different car >> Section 23 (Heater System) >> PTC Heater >> Description and Operation >> Operating Condition

Operating Condition

WARNING: This page is about a different car, the 2014 Hyundai Elantra GT and 2013 Hyundai Elantra GT. However, it is still accessible from the selected car via links, so may be relevant.

PTC heater operates according to the following conditions:

Ambient Temperature Coolant Temperature PTC Operation
Below -20°C (-4°F) Below 75°C (167°F) ON
5°C (41°F) Below 65°C (149°F) ON
7°C (44.6°F) or above - OFF
- 80°C (176°F) or above OFF
Fig 1: Coolant Versus Ambient Temperature Graph
G09887938Courtesy of HYUNDAI MOTOR AMERICA