Causes of Coolant Loss. Cooling fan comes on as soon as engine starts and stays on when engine is switched off Share this conversation. If your car turns on but won’t start, turn on the dome light and watch it while you try to start the engine. Saturday, September 17th, 2016 AT 10:11 AM. This is why it lights up blue when you start your vehicle. When working properly, the cooling system keeps the engine running at peak efficiency and at its ideal operating temperature. In modern cars, it’s hard to check the cooling fan yourself as you often can’t see it. This could be due to a leak in the system or it could be a sign of a larger problem, like a head gasket failure. I think I had waited about an hour before opening the tank. DescriptionThis question was asked on the AskDAP Show Episode 1. Another way to test the fan is to turn on the air conditioning. Toyota high engine coolant temperature warning light. The cooling fan is activated in most—but not all—cars when you turn the AC to either a medium or high speed. Drove it for about a week, nothing. i just bought a brand new honda civic. Hi..there.. Reply. You may smell coolant in the cabin. (Psst! The vehicle should be shut off immediately when this light comes on and the cooling system inspected in order to avoid engine damage. The coolant light glowing blue when you start your car is a warning that the engine isn’t yet up to its optimal running temperature—so don’t push the engine hard. 12 Replies. We have a whole bunch on this here, but the short version is: When the light is blue, the coolant temperature is low. No. ENGINE COOLANT TEMPERATURE. I was only a mile from my house. Failure. Pull the car over somewhere when the light comes on. This could be due to a leak in the system or it could be a sign of a larger problem, like a head gasket failure. Wait for at last 30 minutes for the engine to cool down. The radiator fuse is fine the belt driving the water pump is fine. That’s why it’s best to take your car to a garage. Coolant temperature warning light. To test this, find your radiator fan switch and disconnect the wiring harness. It tends to fail when I am stuck in traffic, and then the red warning light comes on and worst of all, the A/C compressor stops working. Upon starting, the engine temperature warning light should come on and then go off in two seconds or less. I love it. anyways, recently the coolant light has come on for less than 60 seconds and then went off. Do you. When I bought the car, the low coolant light on the dash would come on about once every 5 times that I drove it. Engine coolant has a variable volume that changes with temperature. Yes. When the light blinks red, the coolant temperature is high. 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. I drove it two trips prior to that. Check the coolant level and add as necessary. Why does the light come on? I just notice it Thursday and now it comes on every time I drive the car and it does not stay on all the time. This coolant light also comes on for a low coolant level. Hi I have a 2013 Chevy Cruze and the tempature light comes on as soon as u start the car and the check eingine light is on… there seems to be no leak and the gauge goes to H but the car isn’t really hot like I said u can start it and it will start off saying it is hot what could this be thanks . It has about 180k miles a recent service and the coolant level is good and was changed about 1 year ago..connected Obd reader and there isn't any codes . After driving for a while my red coolant light starts flashing. Coolant is full. I shut it off for a while, then after starting it up it happened again. Then The coolant light came on longer. Sometimes when driving the coolant light comes on. Get a jumper wire and insert it into both contacts, your fan should come on. So now that its getting cold in the mornings, upon start up, my red coolant idiot light starts flashing every morning only on the first start up....If I turn off the engine and re-start, it goes away. In a 02 VW Beetle GLs the Water Temp light comes on when car starts and goes off after 10-20 min of driving is something wrong with coolant system? Upon startup, your vehicle is preforming a temperature check. The engine coolant temperature warning light is serious and indicates your engine is too hot, or your coolant level is low or the vehicle may have a faulty coolant temperature sensor. What could be causing this problem and what to check? iI called the dealer ship, since i've only had it for two weeks and this light seems to come on everytime i start my car, and i was told that "the engine has to come up to temperature." But what happens is when it is really cold outside, my coolant light flashes when I start my car. So I kept driving the car and thinking about it. Asked by Wiki User 30 31 32 I'm wondering what the problem here might be and what I can do to fix it. I live in CO so it's not that cold here yet, and I usually only see that light come on in previous cars when the outside temperature was ridiculously cold, like a blizzard. (When I started the car today it stayed on for a minute or two then went off as I kept driving). A few hours later I drove it and it didn't come back on -went to the Bap Geon to get VW coolant and let the guy look at it. This light will come on when coolant levels are running low and the engine is overheating. If the coolant is low and your air conditioning is running, you may notice hot air coming from your car A/C vents. You can call us out if your car won’t start or you think the … And if it has stopped working, you’ll need a professional to repair it for you. Today i was driving my 02 vw jetta and the coolant light came on shortly after starting the car. I don't know how to check the water pump itself. How can I tell if I have a coolant leak? Normal? Stop and wait five minutes. A red engine temperature warning light requires immediate action. BlueDevil Pro says: July 29, 2019 at 10:05 am. We owned the car a little less than a month and we always see the blue coolant/temperature light when we start the car in the cold morning. I recently had my coolant light come on intermittantly on my 2006 BMW X3. You should never dare to continue driving when the light is on. The only thing that urks me is that whenever i start the car the blue coolant light comes on and stays on for a minute or two. The trick is to turn the key to the start position repeatedly about 10 times in a row. Your coolant light will come on when the sensor senses an incorrect change in the temperature in your system. Went home, parked. The radiator fan runs very loud and fast and the car is overheating..this happened suddenly and I can't drive it around the corner without overheating. Just recently bought a Crosstrek, low temp coolant light comes on when I start the car, but after driving for a minute it goes away. When you have a BMW coolant leak, you will notice a distinct sweet smell that wasn't there before. This light will come on when coolant levels are running low and the engine is overheating. Coolant light comes on, engine temp normal? Or you may smell the coolant leak when the car is parked. Can I still drive with my engine coolant temperature light on? If the light goes out, it’s a sign the battery is really weak—almost dead. My cooling fan starts immediately when I start the car even though it is cold and stays on until the engine is shut off. Typically the sensor, which monitors the coolant temperature, knows how to adjust to varying temperatures depending up the status of your car; running, warming up, or cold. The computer in every fuel-injected car must know two things before it can figure out the correct cold-start air/fuel mixture: the engine coolant temperature and the outside air temperature. I heard a small gurgle and hiss and noticed that the tank was full. After that, this indicator light/warning light changes to BLUE and maintains illumination in BLUE. If this sensor malfunctions, it could be causing the coolant light to turn on even if you don’t have low antifreeze levels. To heat up the battery, terminals and starter, try the “key cycling” trick. White smoke coming out of exhaust pipe might result due to so countless reasons however when you ... it allows coolant to start leaking into the car engine combustion system and the cylinders which then alters then normal operating system of the car and this is very unsafe for the engine and could damage the engine on long run. The engine is not over heating. If BMW coolant too low warning light comes on and then turns off, the level may have dropped slightly. If you have to pump the gas pedal in the morning to keep your car running, you may have a bad engine coolant temperature sensor. The check coolant light came on when I started the car (didn't go past the center on temp gauge. I tried disconecting the battery for a couple hours and it goes back to running normally, but this start doing it again after driving for a couple weeks. And when the weather is warm, it doesn't come on at all, so just during the winter months it happens. Ran fine for a while. This implies low coolant level or excessive coolant temp, but neither are applicable as is cold start and level has been checked and is fine. The symbol should briefly illuminate on your dashboard when you start the car and go out shortly after the engine has started. have the same problem? Do not open the reservoir while the car is still warm -- always allow it to cool first. According to the manual, it is okay to be blue and I have read that it is to indicate the engine is not warmed up yet. It should be between the "Min" and "Max" lines. It takes about 30 seconds (or sometime longer) before it clears itself. When the light comes on and the temperature needle is in the "Normal" range, shut the vehicle down and check the coolant level in the coolant reservoir. So I decided to check my coolant expansion tank. Although the coolant fan switch is very small and sometimes over-looked, it is an incredibly important component to your car’s cooling system. SPONSORED LINKS. This is perfectly normal, but if the temperature light comes on while driving, immediate action should be taken, particularly if the symbol is red. Wear a thick glove or wrap the hand with a thick towel or a piece of rag and remove the radiator cap to check the coolant level. Hi All During the recent v cold weather my car has been flagging the red coolant warning light on first start in the morning. I think the outside air temp has to be about 40 or below, anything above that and it doesn't come on. It will turn off when your engine gets to appropriate operating temperatures. It still runs fine and everything while it's flashing. Then, once my engine is warm after some driving, it turns off. Expert: Robert ... Peugeot 308 sw 1600cc 2008 oil warning light came on .oil checked found to be low oil added Expert: Robert replied 5 years ago. Pull over as soon as possible and shut the engine off. Can I still drive with my engine cooling system light on? But if it stays on, or comes on while you’re driving, there’s a problem. Manual says if car was overheating the light would stay on not flash. Bought a used 2000 Pontiac Grand Am GT1 from someone a month or two ago. My car has 180000 miles. Coolant low light won't go off 5 Answers. The sensor is very important because your car’s systems depend upon it running at defined temperatures. Service engine light is on for evap small leak (think that’s unrelated to the coolant light?) When cold, it takes up less space and could therefore be below the coolant level sensor (if equipped). VW engine cooling system warning light. Red Engine Temperature Warning Light . My wife refuses to move the car until the blue light … 'S flashing what happens is when it is cold and stays on, or comes on as soon possible! Not all—cars when you have a BMW coolant too low warning light?. Is shut off immediately when this light comes on for a while my red coolant warning light requires action. 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