500SEL (126.037) V8-5.0L (117.963) (1984)
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Coolant Temperature Sensor / Switch HVAC: Testing and Inspection
TESTING TEMPERATURE SWITCH FOR COLD ENGINE LOCK
up to 08/85
The heater blower must not start up in heating mode (in-car temperature lower than temperature set on selector) at engine coolant temperatures below 33
°C in "EC" position or 37 °C in "normal setting" position.
The heater blower must start up after coolant temperature has reached 33 °C or 37 °C.
If blower fails to start, pull 1-pole coupling from switch (2) and connect to ground.
If heater blower starts after approx. 10s, renew temperature switch.
