Safely stop the vehicle as soon as possible, and refer to the emergency steps for the case of engine overheating in your Subaru Owner's Manual. At this time the engine may be overheating. If the engine coolant temperature increases further, the indicator light/warning light illuminates RED continuously. ![]() Contact Stanley Subaru Service Center for an inspection. However, if the indicator light/warning light often blinks in RED, the electrical system may be malfunctioning. After the blinking RED light turns off, you can drive the vehicle normally. If the engine coolant temperature increases over the specified range, the indicator light/warning light blinks in RED. Illumination in RED indicates overheating condition of the engine. Blinking in RED indicates that the engine is close to overheating.ģ. Illumination in BLUE indicates insufficient warming up of the engine.Ģ. This Coolant Temperature Low Indicator Light or Coolant Temperature High Warning Light has the following three functions:ġ. Contact Stanley Subaru for an inspection. The electrical system may be malfunctioning. Safely stop the vehicle as soon as possible, and refer to the emergency steps for the case of engine overheating.Īfter that, have the system checked by Stanley Subaru or the nearest Subaru Service Center. While driving, if this indicator light/warning light behaves under any of the following conditions, take the specified appropriate measure listed below:ĭecelerate the vehicle. It remains blinking in RED and BLUE alternately. It remains illuminated in RED for more than 2 seconds. Contact Stanley Subaru's Service Center at 80 immediately for an inspection: Doesn't change the need to let the car warm up before driving HARD, but not necessarily before driving period."Īfter turning the ignition switch to the "ON" position, if this indicator light/warning light behaves under any of the following conditions, the electrical system may be malfunctioning. "It's no different than a temperature gauge, but Subaru opted for the mpg gauge and went with lights for the temperature. Cold oil is not going to keep your engine or gearbox lubricated well enough to prevent damage when operating at full speed." "The reason that you need to let even modern cars warm up is that all the lubricants need to come up to operating temperature before they are their right viscosity. ![]() The blue light is a replacement for the traditional temperature gauge.which probably got attention from very few people anyway. If it's a manual, take it easy on the shifting as well. That means not using the accelerator much, and not revving the engine very high. "You don't have to sit in the driveway and let it warm up, but you shouldn't be driving very hard until the engine is up to normal operating temperature. The light should only stay on for a minute or two, unless it is extremely cold outside, then it may take a minute or so longer to go out.Īaron Hubbard, responding to this question on explains why even modern vehicles need to be warmed up: ![]() While you can still drive the vehicle safely with this light on, it is best to wait until the blue light has turned off. The blue light will stay on until the engine has reached optimal operational temperature. This BLUE illuminated light turns off when the engine is warmed up sufficiently. After that, this indicator light/warning light changes to BLUE and maintains illumination in BLUE. For the system check, this indicator light/warning light illuminates in RED for approximately 2 seconds when the ignition switch is turned to the "ON" position. Upon startup, your vehicle is preforming a temperature check. Referred to as the "Coolant Temperature Low Indicator Light or the Coolant Temperature High Warning Light" in the Subaru Owner's Manual, this light will come on whenever you start your Subaru vehicle.
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