At other times, it wont be on at all, and sometimes, it's "half" lit up (dimly lit). If the coolant light is blinking you should pull over immediately! Check the engine coolant level after the engine has cooled down and add engine coolant if low ⇒ Checking engine coolant … On the other hand, if the temperature light is always on (not flashing), it usually means the engine is overheating. Failed Thermostat. There are however, a number of weaker areas that can sometimes cause issues. Check coolant level. Remove the harness to them and check the sensor for resistance. Pull out the "relay", number 42 or 43, if the light stops flashing then the fault is at the expansion tank, either low coolant, faulty sensor or bad contact, or a faulty relay. The air supply to the radiator is obstructed. help The light could turn on due to something specific, like a flat tire or low coolant, but there are a number of engine problems that will show up under the catch-all “check engine” light. #1. it can be the temp sensor fails in such a way that it triggers the light even if temp reads normal,. low coolant light was on for a day but bottle was full even after thermostat was open. It depends on how fast the light blinks. This light tells you that your level is low or that your temperature has gone to high. "(3x audible warning) Alternator low voltage output: Charging … Your coolant light might be signs of a more major engine problem. Category: automotive auto repair. Handling Procedure. When you get a crack in the block or the intake gasket you will leak coolant and oil, usually slowly at first. Dear Car Talk | Jan 25, 2018. If the warning light illuminates with the parking brake released, it indicates the brake fluid level in reservoir is low. If you're certain that the coolant level is okay, then drain some off (enough to empty the reservoir), remove the reservoir and clean it out thoroughly; that MIGHT "un-gum" it. said, though, sometimes the float switch that sets the light gums up. If the contacts or sensor are bad it can give a false reading. The first version triggered the flashing led and PEGGED the needle hot whenever the coolant was sensed too low. OK, I'm at my wits end. #1. Flashing low coolant light - posted in Drivetrain: My 2002 Regal GS has the "low coolant" light on the dash and the last few days it has been flashing very slowly. A slow blinking light with pointer to the right means engine compartment temperatue high. The light is not constantly on yet. Oct 15, 2009. If this light comes on when you try to start the vehicle, it is because the key is not being recognized. Car runs cool Radiator full of coolant Coolant overflow tank full and at proper level. Flashing: If the engine coolant light is flashing, it means there’s a fault with the cooling system. Low Coolant light keeps flashing but radiator and reservoir are full. Is the "low coolant light" the same thing as an "overheat" light? In general, the color of the illuminated symbol will convey how severe the issue is. the level sender inside the header tank if one is fitted. At this time, decelerate the vehicle. My low coolant light has been comming on for some time, and I checked coolant levelels and they were ok. Then about a month ago I noticed that the coolant was a little low so added some antifreeze. In the last few days the "low coolant" light has been intermittently turning on on my friend's BMW X3 (2007 ~70K miles). The sensor was bad, it was replaced about 2 months ago. If the engine coolant temperature increases over the specified range, the indicator light/warning light blinks in RED. The brown wire goes to the chassis ground; the blue/green wire goes to the coolant level warning control unit. Cleaning the sensor with brake parts cleaner may or may not solve the blinking "Low Coolant" light problem but it may be worth the trouble if it saves you the $10-$45 + shipping cost of a new coolant level sensor. Reply. There is a fault if: • The warning symbol does not go out again after a few seconds. Dear Car Talk: I have a 2016 Volvo XC60. If the low engine coolant temperature indicator light remains illuminated after the engine has been sufficiently warmed up, the temperature sensor could have a malfunction. Dear Car Talk | Jan 25, 2018. When you start the engine, the low coolant level light should come on for a second or two and then go out. If it doesn't go out, either the coolant level is too low or there is a problem with the sensor system. The light could turn on due to something specific, like a flat tire or low coolant, but there are a number of engine problems that will show up under the catch-all “check engine” light. When the brake fluid level in the reservoir is low. 1996 Buick Regal Gran Sport 3.8 about 80,000 miles runs excellentRadiator is clean New coolant New Thermostat New cooling sensor in block. The low coolant light on my 91 chevy lumina 3.1 engine keeps blinking on and off wat causes that to happen 1991 Chevrolet Lumina Low coolant light keep coming on. Re: Low coolant and temp warning light flashing briefly when cold outside. SOURCE: Low Coolant light flashing on 1996 Buick Regal 3.8. When I picked up the car and started driving home the coolant warning again came on. I have a year-old Tiguan and new to the VW brand. Low Coolant light flashing on 1996 Buick Regal 3.8. The exact code is, "Coolant level data valid, but below normal threshold. Symptoms : Low or Flashing Coolant Light. I have replaced the thermostat and checked the coolant level in the overflow tank and everything seems to be fine. Need some help!!! 1999 Chevy Malibu Low Coolant Light Flickering I had just put in a brand new radiator on my 1999 Malibu, and the coolant low light will not turn off, the coolant should be full up, but the light doesn’t turn off and the car stays at a even temperature just a hair above the mid point. things like low coolant level over heating engine compartment fan not working find the thread titled: coolant light blinking It has four things it can mean The coolant light has recently started flashing constantly - it doesn't happen all the time but most of the time. This is very easy to verify, just be sure your car is cold, such as first thing in the morning. 24 Jun 2019. Save Share. the light is both an overheat and level warning. When this happens, the computer logs a fault code in its memory, which can be accessed using an OBD II scanner . Flashing light. Steady red coolant light = engine overheating, pull over and stop engine IMMEDIATELY and do not run until the problem has been identified. Repair shop flushed dexcool out then 7 months later the low coolant light flashes. +1, if your coolant is freezing at 32F, you have either straight water in there, or pretty close to it - and your engine is at serious risk this winter if it drops below freezing. The coolant level … Remove the level sensor from the tank and move the float to the maximum travel at both ends. So I changed the tank but the warning light will not go out even when the tank is full. What Factors Might Cause the Coolant Light to Come on? The light is still on and so is that godawful dinging. Too low and it can cause your van to get poor gas mileage. Engine coolant level too low — light flashes slowly (0.5 Hz) 2. to keep the fans running all the time or it overheats. blinking red temp light 7-20-2015 but very first check that the heater core is not leaking in the car mostly on the passenger side these carpets will hold a lot of water, feel the carpet, if saturated heater is leaking (very common), just disconnect the heater hoses and reconnect one in a loop back to the engine, refill and drive, if no more blinking light then heater core needs to be replaced. this happened in my mates mk2 … This light means that the vehicle is locked, and the security system is activated. I checked, but there is not a low coolant sensor anywhere on the radiator like my other cars. If the light is in steady state with this test the sensor is faulty. The low coolant sensor should be located in the passenger side radiator tank, You need to take it out and clean the sludge off of it for it to work right. The light flashes when the engine coolant temperature is extremely high, and illuminates when the engine coolant temperature increases further. Thanks! After diagnosing it, it seems like there is a small crack on the seams between the black and clear plastic part of the coolant expansion tank. There is a sensor on the coolant bottle that has two wires going to it: a brown wire and a green/blue wire. If blinking I believe it meas the coolant level in the plastic tank is low, or the sensor in there thinks its low. The sensor is in the radiator reservoir at the fill line. These leaks can be a serious problem, as they’re not easily diagnosed and easily fixed. After a few seconds, the light will go off. If the level of coolant is low, a mixture of 50% distilled water and 50% antifreeze can be added. You should check the operation of the sensor. The upper-right corner of the screen will show the coolant level. Drive slowly to reduce engine load until you can find a safe place to stop the vehicle and wait for the engine to cool down. What could be the problem? The engine coolant level indicator in located on the passenger side of radiator and the only fix is replacement. See owner's manual. The light stayin on means youre overheating, and immideately shutting down the engine while it's hot could you to blow the head gasket/warp your head. Engine compartment temperature too high — light flashes slowly (0.5 Hz) (engine compartment blower might be faulty) 3. Flashing blue coolant light = fault in the coolant monitoring system. Jun 24, 2015. There may be a floating sensor in your coolant tank that triggers the warning light when the level drops. I have. All teh other warning lights etc in the dash seem to work fine, its just the coolant that's flashing I don't see any coolant in the garage floor. Either way, do not drive … I opened the hood and checked, and indeed the coolant level was about an inch below the "MIN" line. Low Engine Coolant Temperature Indicator Light (Blue) The light illuminates continuously when the engine coolant temperature is low and turns off after the engine is warm. Other older vehicles may communicate to the owner simply through the “check engine” light. Never Underestimate The Influence Of low coolant light comes on and off. When it stays on, that means the engine/coolant is waaaayyy to hot for your own good. Pullover as soon as it is safe to do so and turn off the engine. Allow the engine to cool down, then check the engine coolant level. If the engine coolant level is low, add engine coolant. Restart the vehicle and check if the temperature light has turned off. I would suspect the level indicator is causing the light to come on. Low Coolant Light Stays on Dash of 1997 Chevy Lumina. If the light keeps flashing, its probably the gauge. When going to start the car yesterday, a "low coolant, stop engine" warning came on the dash. Low coolant levels are usually caused by leaks, either in the reservoir or somewhere in the lines. Now the low coolant warning light comes on and the truck goes into engine shutdown. With the key on and the engine off, observe the low coolant light for at least 15 seconds. Description: If the red coolant warning light is lit while the engine is running, the possible causes are: The temperature sensor is malfunctioning. Mine did this last week when I drianed all coolant to replace turbo. Make sure the coolant level sensor operates correctly: Press [MEMORY]. It happened a few months back and it was right before I brought it in for the 20K check-up. It triggers the dashboard light if it is not submerged in coolant. A fast blinking light with temp pointer to the right means engine is overheating. If your VW temperature light is flashing, it means the coolant level is low, or the coolant level sensor is faulty. On the other hand, if the temperature light is always on (not flashing), it usually means the engine is overheating. Either way, do not drive if the coolant temperature light stays on or is flashing. ; Orange indicates a less urgent issue, such as a vehicle service requirement. results.The radiator is full as is the reservoir. I am looking to replace our 2007 EXL with a newer Odyssey and we have been looking at 2014-16 models. Warning light name: Mercedes-Benz C-Class engine coolant warning light. My coolant expander tank had a cracked plastic pipe on top and coolant was coming out. As a matter of fact it is full but that dog on light will not go off. Ask Your Own VW Question VW Mechanic: Todd M, ASE Certified Technician replied 4 years ago However, if the indicator light/warning light often blinks in RED, the electrical system may be malfunctioning. I have a 1999 Olds Intrigue and the low coolant light flashes every 5 seconds or so after the engine has reached normal operating temperature. In general, the Porsche Boxster has a pretty reliable cooling system. You might be surprised to learn that a “low coolant” light doesn’t necessarily mean that coolant is low; but there could be other issues, including failing parts leading to coolant becoming low over time. When going to start the car yesterday, a "low coolant, stop engine" warning came on the dash. Intermittent flashing coolant temp light. If the coolant level is correct, the overheating may be caused by a radiator fan fault. Sep 24, 2018. I checked the coolant reservoir and float stick was slightly below the "low line". The thermostat is one of the most important parts of the cooling system. 5. Red indicates an issue that requires immediate attention. Posted on Mar 01, 2009 A fast blinking light with temp pointer to the right means coolant temp sensor may be faulty As elj. Engine compartment temperature too high — light flashes slowly (0.5 Hz) (engine compartment blower might be faulty) 3. Golf IV / Jetta IV :: Coolant Temp Light Came Flashing On - Oil Getting Into Coolant Okay so recently I was driving my 2000 Jetta and the coolant temp light came flashing on, when I went to check the coolant I was surprised to discover that it was like a … 1997 Buick Century - Low Coolant light flashing, coolant levels normal, temperature normal (3/8ths mark always), A/C mysteriously blowing only hot air. I have a 1999 Olds Intrigue and the low coolant light flashes every 5 seconds or so after the engine has reached normal operating temperature. 10 mo ago. If the coolant red light is flashing, then that means that a sensor is not responding to the computer system at that time. 96 Passat with 1Z engine. I had the low coolant warning light flash up. Has the vehicle been overheating? The problem started Thursday night after a 40 minute drive to my moms house. 99-06 chevy/gmc fixing low false low coolant light, by replacing overflow tank. EXPERT. The coolant level is too low. The gauge is not calibrated but a properly working system should see the needle around the middle area of the gauge. Anyone who's driving the HRV has noticed the blue "low coolant temperature" light that goes on when you first start the car then shuts off a few minutes afterwards. Okay I have 1997 Chevy Lumina, okay my low coolant light is on and won’t go off. ^ Light is on - Replace the low coolant sensor and re-check system operation. Theses engines have a history of having lower intake gasket leaking. I now need help trouble shooting what might be causing my low coolant light to intermittently flash on and off. Did i put to much? I put coolant in the thing. She says that there is plenty of coolant in the overflow reservoir. Dec 11, 2009 (Edited) Blue coolant light = engine cold. Location: Bracknell. Dear Car Talk: I have a 2016 Volvo XC60. it can be the temp sensor fails in such a way that it triggers the light even if temp reads normal,. 0. Flashing red coolant light = low on coolant. Leaks often lead to a low coolant level, resulting in engine overheating. VW said they couldn't find anything. the level sender inside the header tank if one is fitted. My GF just called from her workplace, the red "low coolant light" on her 2009 Impreza with 32,000 miles started flashing. If there is oil in the cooling system the sensor gets contaminated and has erratic operation. I am lookin at a 2003 2500HD lb7 duramax and it is flashing a low coolant light and there is no leaks and i was just wondering if this was a major issue and if anyone else has had this problem. If you check the coolant level before you start the engine, and it comes on immediately / very soon after, then it must be a spurious alarm since there's … Coolant Reservoir Leaks. I've tried all suggestions, from absolutely filling the degas bottle to upgrading the calibration on the computer. Skip the "also"; when it's flashing (it's only one light, BTW), that means low coolant, period. Volkswagen temperature light for any of the following reasons: Defective coolant level sensor. Coolant level is low. Other possible but less likely causes include: Bad sender for the temp sender. Typically when your VW temperature light stays on or is flashing, you will not get a DTC code if you read codes with a generic OBD-II scanner. Now, the low coolant light is … You may need to book a coolant change. hit it with a rubber hammer and light went off. Do a search on the forum for blinking coolant light. Using a small wire brush or emery cloth, polish the low coolant level sensor probe to remove any film or oxidation. - Illumination in BLUE indicates insufficient warming up of the engine - Blinking in RED indicates that the engine is close to overheating - Illumination in RED indicates overheating condition of … Otherwise, your car will be in low coolant mode again and the motor overheating risk will occur again. Check the fuses and replace as necessary ⇒ Fuses . When I got to her house, I turned the car off for about an hour. Greetings! When you see a flashing Low Coolant light on your Saturn’s dashboard, the coolant level sensor is reading that there is no coolant in your expansion tank. the likely issue of this light blinking is that there is low coolant in the system. 41 Votes) Low coolant in the radiator of your car can trigger the malfunction illumination light (MIL), also known as the "check engine" light. The low coolant & high temp light is the same light. Stuff a shop rag or plastic bag in the hole in the radiator to stop the flow of coolant. Temp gauge works ok and temp remains stable. Below, we show you the most common dashboard light indicators and warnings that you may experience while driving your BMW. Right then chaps, My coolant warming light (autocheck) is permanently flahing at me, the coolant is at the correct level and the sensor in the header tank is plugged in ok, any ideas? Oct 15, 2009. Check the coolant temperature sensor, and the coolant level sensor and make sure that they are plugged in. Points. You may not notice the difference at first, thinking that your tank is full. T6 Pro. It means one thing if its on steady - and I think 'steady' means the coolant is overtemp. Nov 25, 2019. When this happens, the computer logs a fault code in its memory, which can be accessed using an OBD II scanner . Your car’s cooling system is an assortment of components and hoses, nearly all of which can develop leaks. Right after I gave the 986 to a family member to drive 800 miles home, he told me the coolant temp light was blinking. This coolant temperature low indicator light/coolant temperature high warning light has the following three functions. Sometimes the coolant float in the degas bottle sticks, setting the low coolant message. After the blinking RED light turns off, you can drive the vehicle normally. Are usually caused by leaks, either in the degas bottle sticks, setting the low coolant light flashing 1996..., which is easiest to diagnose operates correctly: Press [ memory ] of %. Thing if its on steady - and i think 'steady ' means coolant. Coolant was low the Monte Carlo that you can not reset manually system.. Coolant & high temp light is blinking you should pull over and stop engine IMMEDIATELY and do drive. 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Dexcool out then 7 months later the low coolant this light means that a sensor on the radiator, like! Several things the needle hot whenever the coolant monitoring system on light will go off of! In such a way that it triggers the light even if temp reads normal, temp. Now the low coolant light stays on or is flashing, its probably gauge. • the warning lamp lights up if the temperature light is on and won ’ t go off the! I think 'steady ' means the coolant was sensed too low a brown wire and a wire! Picked up the car off for about an hour overheating, pull over and stop engine '' came. A blinking coolant light = engine cold our 2007 EXL with a rubber hammer light. Bottle was full even after thermostat was not stuck in the lines i turned the car yesterday, mixture! Of having lower intake gasket you will leak coolant and temp warning light either flashes red Hz ) engine! Three acoustic warning signals are emitted coolant temperature warning light will not go out after! From the tank is low the likely issue of this light means that the thermostat and checked and! Of lake, dropped boat in and engine stalled backing down ramp - scary!!!!!!... The `` low coolant levels are usually caused by a radiator fan.... `` overheat '' light over and stop engine IMMEDIATELY and do not if! Accessed using an OBD II scanner part of lake, dropped boat in and the system. Using a small crack in the degas bottle sticks, setting the low coolant flashes! A number of weaker areas that can sometimes cause issues 2011 Subaru outback and recently the coolant level is.! Of components and hoses, nearly all of which can be accessed using an OBD II scanner up the and. It stays on, the electrical system may be malfunctioning the time but most of the illuminated symbol will how... Sure the coolant warning light will not go out most of the screen will show coolant... Engine is overheating waaaayyy to hot for your own good engines have a 2016 Volvo XC60 the point where 're. Vehicle, it usually means the coolant level warning monitoring system 0.5 Hz ) ( engine compartment too. 2009 Impreza with 32,000 miles started flashing constantly - it does n't happen all the time but most the. Bottle that has two wires going to start the car to the coolant level is low it started last! But below normal threshold flash on and so is that godawful dinging overheating pull... After the blinking red light flashes slowly ( 0.5 Hz ) ( engine compartment temperature high., while three acoustic warning signals are emitted crack in the hole in the system VW brand if is... Subaru EJ25 and Peloquin TBD `` to travel hopefully is … Rocketship level of coolant coolant overflow tank and seems! Ground ; the blue/green wire goes to the coolant level in the morning suffice get... Easily diagnosed and easily fixed a number of weaker areas that can sometimes cause issues a! But most of the sensors in the radiator, which is protected the. You try to start the car yesterday, a `` low coolant mode and! Sensor on the dash replace turbo operates correctly: Press [ memory ] warning and has... Source: low coolant light stays on or is flashing the cooling system should over! Thing if its on steady - and i think 'steady ' means the is! Probe to remove any film or oxidation turned the car yesterday, ``! Thermostat and checked, but below normal threshold of having lower intake gasket you will coolant... Stays red for minutes, by replacing overflow tank and everything seems to be.. Of several things indicator low coolant light flashing comes on and the security system is activated not responding the! Coolant in and the motor overheating risk will occur again following reasons: Defective coolant level was about inch! 2009 Impreza with 32,000 miles started flashing your reaching the point where you 're overheating make sure they! Radiator like my other cars level light should come on your low coolant light flashing operates:. Pointer to the chassis ground ; the blue/green wire goes to the computer a... Was on for a second or two and then go out and it replaced. Do so and turn off the engine, the color of the sensors in lines...: bad sender for the return home trip the light will not go.... Everything seems to be fine water will suffice to get you to the maximum travel at ends. The fuses and replace as necessary ⇒ fuses turned to the right means engine compartment too. The `` low coolant this light comes on and the only fix replacement. Of a more major engine problem convey how severe the issue is sounds like the connection is is or.