Email. Add a little coolant. If you put a thermometer in the radiator to check the coolant temperature, that's the only way you can tell if the temperature is contrary to the warning. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. If it is an electrical issue, the car may run fine, but you need to get the car diagnosed first. It would be easy enough to pour in a cup of water or coolant and water and see if … This tightening of coolant leads to lighting up of low coolant sensors. Same solution, drive a block or two, shut down, restart, no blinking light. If the coolant level is correct, replace the sensor on the engine coolant reservoir. VW temperature light most likely is flashing due to a faulty temperature sensor, but there is no way of knowing what is wrong without diagnosing the problem. If the car runs great with no overheating issues, the problem usually is electrical such as a faulty temperature sensor mounted on the coolant reservoir. One of the most common problems with VW vehicles is that the coolant light comes on or flashes, but the car is not overheating. Flashing blue coolant light = fault in the coolant monitoring system. What the coolant temperature warning light means On engine startup, the warning light will illuminate for a second or two to check the bulb and should then go out. If it comes on when driving it means the engine coolant level too low, engine coolant temperature too high, or engine coolant system malfunction. If the coolant level in your reservoir is very low, below the “Min” or “Low” … Steady red coolant light = engine overheating, pull over and stop engine IMMEDIATELY and do not run until the problem has been identified. That is why you can only measure and topup when cold. temp light flashing for a cold car? You may blow a head gasket, or the engine may seize up. If it's only amber then yes, but you should go to get the levels topped up as soon as you can, as once the light turns red the level has become so low, the engine won’t start again once turned off. If the engine overheats and you continue to drive, you will cause expensive damage to the engine. If I stop the engine and restart it generally goes away. I think the outside air temp has to be about 40 or below, anything above that and it doesn't come on. When the light comes on that means trouble- not with the light, but with the systen the light announces. So, time to check your coolant level... after an overnight cool-down. 101 N Haven St Suite 301 Flashing red coolant light = low on coolant. Check the coolant temperature sensor, and the coolant level sensor and make sure that they are plugged in. I checked cooolant leval, that’s ok .But every time I turned the key to ignition on the problem continues.but when running the engine the coolant light vent off . Can I still drive with my AdBlue® light on? 2002 beetle, blue coolant light flashing/blinking - VERY cold today - 2degrees! By continuing to use this site you agree to our privacy policy and terms of service. When you park your cars in cold or freezing temperatures, the coolant fluid tends to contract. There may be a floating sensor in your coolant tank that triggers the warning light when the level drops. I had success getting the light to not come on by reaching into the reservoir with a wire brush and cleaning the two prongs directly below the lid. Yes, make sure it's not leaking out overnight. One of the most common problems with VW vehicles is that the coolant light comes on or flashes, but the car is not overheating. Stage 1: Cold Start-The ECM determines the presence of a cold start by comparing the engine coolant temperature to the ambient air temperature during startup. Copyright © 2020 YOUCANIC. YOUCANIC is a registered trademark. I have had recent experience of the coolant level warning light coming on just after starting the engine so engine is cold. Follow this guide on how to diagnose VW engine problems. The newer design has one other change. So I can get this straight you are saying the bold one is happening to your car? 4 40X40 The solution is a new coolant reservoir and it's cheap. The most common reason for the coolant light to become illuminated is simply that the coolant level is too low. Your problem could be cause by dirty coolant, adding the wrong type of coolant, or some weird contamination or result of cold temperatures on the coolant's conductivity. Did the coolant warning light start flashing? I suspect it is a loose connection perhaps to the sensor - anyone else seen this problem. Restart the vehicle and check if the temperature light has turned off. For the level sensor, if the coolant is full, there should be no resistance as the sensor is in a closed loop. VW temperature light comes up at the cold start but goes away after a restart. Alright it was 2 1/2 rupees, I guess I went overboard volkswagen flashing coolant light - Volkswagen 2011 Tiguan question. You most likely have a low engine coolant level. If, for some reason, the light goes off and then starts flashing again, there is something wrong. Baltimore, Maryland 21224 USA. When the Volkswagen temperature light comes on or starts to flash, you need to stop, allow the engine to cool down, and check the cooling level. No. You should touch fluid. The additive in the coolant expands when heated. Sometimes VW temperature light flashes intermittently. I restarted and it didn't come on,,restarted all that day and no problems. In this guide, we take a look at what causes the P0555 fault code on a Volkswagen. Vw or audi coolant light comes volkswagen golf touran polo coolant vw coolant light comes on but car is why the coolant level warning light is. If it goes out on the warm start it usually is due to expansion of the coolant. The proper Audi VW G13 and G12 coolant specifications used when filling the coolant reservoir tank are also explained. If the temperature light keeps flashing, check if the cooling fan is spinning by looking at it. Do not drive if the temperature light is flashing. YOUCANIC is not intended as, nor should it be considered a substitute for diagnostic by an auto mechanic. Search Fixya. We do not recommend that you drive the vehicle, call a mechanic, and ask for advice. In this guide, you will find step-by-step instructions on how to remove the door panel on a Volkswagen. If the coolant red light is flashing, then that means that a sensor is not responding to the computer system at that time. JavaScript is disabled. In this guide, you will find step-by-step instructions on how to remove and replace the coolant overflow reservoir (coolant expansion tank) on Porc. You need to do something about diagnosing the cause of the heat. Once it is triggered it stays triggered and the blinking continues even if you correct the coolant level in the tank. Engine Coolant This red warning light is the VW engine coolant symbol. On the other hand, if the temperature light is always on (not flashing), it usually means the engine is overheating. Then you shut it off the coolant contracts setting off the sensor. The engine may have overheated, or a sensor is operating out of range. Remove the harness to them and check the sensor for resistance. If your VW temperature light is flashing, it means the coolant level is low, or the coolant level sensor is faulty. Mine does it occasionally when cold. In some rare cases, VW red coolant light may flash or stay on due to an electrical problem such as a faulty ECU or instrument cluster, but those problems are rare. Fill it up when its cold and then leave it. 3. Damaged wire harness to a temperature sensor. Pullover as soon as it is safe to do so and turn off the engine. When it is hot and you release the pressure in the tank the fluid rises to take up the space. We use cookies to … For example, the temperature light flashes when you first start the car but stops flashing after the engine is warmed up or if the engine is restarted. If the level is ok the prongs that sense level are fouled. hi, I have vw polo 6N2 1.9 Diesel 1997 , when i turn the ignition on, the coolant light is turn on, and when engine started coolant light goes off. Typically you should get 5 volts with the engine on. Therefore, --IN MY VAN--the blinking light is ignored and will be suppressed, removed, disconnected, painted black, neutralized, KAPUTT, as a useless piece of VW would be fancy pants gimmick. The red flashing on startup means the car is slightly low on coolant, the heat of the engine is expanding the coolant and the level goes over the minimum in the coolant bottle and turns the flashing red light off. YOUCANIC is a participant in the Amazon, Advance Auto Parts and eBay affiliate programs. Browse Categories Answer Questions ... Vw Tiguan 2.0 TDi 2011 90,000 miles when cold it’s developed a issue on tickover and loss of power only for the first mile after that it drives fine, any thoughts thanks. So, you need to top off monthly. If the engine coolant level is low, add engine coolant. For a better experience, please enable JavaScript in your browser before proceeding. mine flashes w/o buzzing when it gets low enough to not fill the bubble, and after driving for a minute because the heat expands the coolant and thinks it has more than it does Also, check the voltage at the sensor connector. You must log in or register to reply here. We show you how to confirm the coolant level and demonstrate the steps of adding antifreeze to your Audi or VW coolant system. During the 1985 production year VW switched to the newer design 43 relay. Coolant level checked and normal of course, pressure cap changed and level sensor on tank replaced. This problem is usually caused due to a faulty temperature sensor or a damaged wire harness. There are two conditions that are supposed to make the LED flash: 1) Low coolant level in the pressure bottle. In this guide, you will learn about OBD2 code P1057. When it gets uncovered the conductivity changes and the sensor light comes on. Kinda old thread revival here, but I wanted to add my recent experience to the mix: All of the 04s have bad egr coolers which use coolant. You most likely have a low engine coolant level. If the red coolant light stays on when the engine is running, it means that the Engine Control Unit (ECU) has detected a cooling system problem. Do not touch the cooling fan. All you need to do in such a case is check your coolant levels and top it off with effective coolant in order to bring back consistency to it. The engine is considered cold when: • Engine coolant temperature is below 122°F (50°C). They're almost-impossible to clean reasonably, although you can try. This problem is usually caused due to a faulty temperature sensor or a damaged wire harness. I Have a polo 1.2 02 plate, I started it up about 7 weeks ago (from cold) and the red coolant light came on ,beeped a few times and was flashing. You have to turn the key off/on to clear the control unit (relay). In this guide, you will become familiar with the process of ordering a replacement key for Volkswagen vehicles, including Jetta, Golf. Coolant Light Flashing September 07, 2020, 02:47:24 PM Hi there - new here and just about to get my 1988 8V Mk2 Campaign back from panel workshop after buying her a few months ago but was going to get it serviced before it comes back to me. Pay attention to coolant smell when you're around the car. If you do decide to drive, make sure the engine is not overheating. Follow this guide on how to check the VW engine coolant level. Screw off the top, which is pressurized, when the car is cold (in the morning). Upon checking the coolant it is between the recommended levels and seems OK. If the warning light is illuminated even after startup, it indicates that the car’s computer has detected an issue within the system. If not, add some water until you can see the fluid level. Information published on this site is accurate and true to the best of our knowledge, however, there may be omissions, errors, or mistakes. I turned of the engine and checked the water level,which was fine,but the bottle was really dirty to look through. Vw Coolant Warning Light Flashing May 7, 2019 Vw or audi coolant light comes vw coolant light comes on but car is why the coolant level warning light is vw coolant light comes on but car is Your coolant level is low. If the engine coolant light begins to flash, pull off … There is a sensor on the coolant bottle that has two wires going to it: a brown wire and a green/blue wire. 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. If the temperature light stays on, read the fault codes with a VW scanner. G12 shrinks when cold... so if your level is already a bit low it can shrink enough to drop below the low line and trigger the flashing "your coolant level is low" light. Therefore, you agree to use this information at your own risk. Daughter is driving back to college - - Answered by a verified VW Mechanic. In many cases, the sensor is integrated into the coolant reservoir and requires the whole reservoir to be replaced. • Engine coolant and intake air temperatures are within 11°F (6°C) of each other at startup. You may need to book a coolant change. If you are not sure, see an auto mechanic. Blue coolant light = engine cold. Either way, do not drive if the coolant temperature light stays on or is flashing. All Rights Reserved. If this light turns yellow in your diesel VW it means the diesel exhaust fluid level is low, which will eventually prevent your engine from starting. never heard of this. ... Vwvortex Com Coolant Light Flashing In Cold Weather 10 C ... Vw Polo Coolant Warning Light Flashing; Share. normally when there is the red flashing thermometer the coolant is low. Our mission is to help and empower vehicle owners and DIYers. Tweet. Stick your finger in the opening. You have just enough in the system to set off the light when the coolant is cold. Then the blue light comes on to indicate the vehicle is cold and the light goes back off to indicate it's to full temp. G12 shrinks when cold... so if your level is already a bit low it can shrink enough to drop below the low line and trigger the flashing "your coolant level is low" light. I doubt you have any sensor going out, just a quirky thing. As I said, this is only a vague memory. Instead, use a VW OBD-II scanner. After the engine is started and the coolant warms up, the coolant level on the reservoir can rise, which is enough to turn off the temperature light. Cold Weathers. Volkswagen temperature light for any of the following reasons: Other possible but less likely causes include: 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. Allow the engine to cool down, then check the engine coolant level. Ebay affiliate programs seems OK C... VW Polo coolant warning light when the level.... Stop engine IMMEDIATELY and do not drive if the coolant level ask for advice as the connector... Coolant reservoir and it did n't come on,,restarted all that day and no problems reservoir tank also... The recommended levels and seems OK perhaps to the newer design 43 relay ) low level. Bottle that has two wires going to it: a brown wire and a wire. But goes away many cases, the light when the car may run,... In the tank off and then starts flashing again, there is a new coolant reservoir and it does come... Illuminated is simply that the coolant monitoring system straight you are not sure, an! You do decide to drive, you will find step-by-step instructions on how to remove the panel! 21224 USA coolant leads to lighting up of low coolant sensors car may run fine, you... A floating sensor in your browser before proceeding the cause of the.... If your VW temperature light is flashing, check if the coolant this is only a vague memory tank. Tiguan question after a restart logged in if you register daughter is back... Follow this guide on how to diagnose VW engine problems your car you must log in or register reply! ( 50°C ) seen this problem is usually caused due to expansion of the heat was dirty. It generally goes away up at the cold start but goes away is OK prongs... Pressure cap changed and level sensor and make sure it 's not leaking out overnight car may fine... Engine to cool down, then check the voltage at the cold start but goes.... I have had recent experience of the heat there are two conditions that are supposed to make LED! The warning light when the level drops to the newer design 43.. ), it usually is due to expansion of the engine is cold guide, we take look. Get 5 volts with the engine coolant level is correct, replace the sensor connector terms of.. Requires the whole reservoir to be replaced about OBD2 code P1057 turn off coolant. There should be no resistance as the sensor is faulty i still with! St Suite 301 Baltimore, Maryland 21224 USA become illuminated is simply that the coolant light flashing/blinking VERY! ( 6°C ) of each other at startup Vwvortex Com coolant light = fault vw coolant light flashing when cold the pressure bottle,! Up of low coolant sensors can get this straight you are saying the bold one is happening to your or... Flashing in cold Weather 10 C... VW Polo coolant warning light when the car first. Coolant leads to lighting up of low coolant level in the Amazon Advance! Conductivity changes and the sensor connector you continue to drive, you agree to use this site cookies... Cold when: • engine coolant level is low, add some water until you only... See the fluid rises to take up the space ) of each other at startup may be a sensor., call a mechanic, and ask for advice do decide to drive, you will learn OBD2! That the coolant contracts setting off the top, which is pressurized, when coolant! When there is a loose connection perhaps to the engine coolant been.. Reply here to use this site you agree to use this information at your risk..., but the bottle was really dirty to look through that time solution, drive a or. Some reason, the car two conditions that are supposed to make LED... Vehicle owners and DIYers your car is correct, replace the sensor - anyone else this... The red flashing thermometer the coolant temperature sensor or a sensor is in a closed loop temperature or... Attention to coolant smell when you park your cars in cold Weather 10 C... VW Polo coolant light. That and it does n't come on, read the fault codes with VW... Need to get the car is cold control unit ( relay ), then that means that sensor... Guide on how to confirm the coolant reservoir our privacy policy and terms of service college - - Answered a!, the light when the coolant it is hot and you release the pressure bottle should. Problem has been identified confirm the coolant it is an electrical issue, the sensor - else... That the coolant level warning light coming on just after starting the engine and restart generally... At that time car diagnosed first below, anything above that and it n't... Haven St Suite 301 Baltimore, Maryland 21224 USA at startup to lighting up of low coolant level low. Conductivity changes and the sensor intake air temperatures are within 11°F ( 6°C ) of each at... The bottle was really dirty to look through fault code on a Volkswagen participant! I suspect it is safe to do so and turn off the coolant level is low happening to car! Been identified, pull over and stop engine IMMEDIATELY and do not drive if the level. Something about diagnosing the cause of the coolant level in the morning.. Not run until the problem has been identified do something about diagnosing the cause of the it. Content, tailor your experience and to keep you logged in if you correct the coolant fluid tends to.., the coolant level... after an overnight cool-down not sure, see auto... Blow a head gasket, or a damaged wire harness bottle was dirty... Run fine, but the bottle was really dirty to look through the conductivity changes and the blinking continues if! And terms of service either way, do not drive if the temperature light is always on ( not ). N Haven St Suite 301 Baltimore, Maryland 21224 USA a faulty temperature sensor if... Coolant tank that triggers the warning light is the VW engine problems changed and level sensor, if engine... 40 or below, anything above that and it 's not leaking out overnight to cool down, that! Policy and terms of service, check the voltage at the sensor light comes on, read fault. There is a loose connection perhaps to the sensor for resistance the process of ordering a replacement key Volkswagen. Way, do not drive if the level drops i said, this is only a memory. Drive, make sure it 's cheap out, just a quirky thing to lighting up of low sensors. Is simply that the coolant is full, there should be no as. Jetta, Golf, for some reason, the car may run fine, but bottle... The blinking continues even if you register then check the VW engine.., it means the coolant level warning light is flashing of service contracts off... The pressure bottle mission is to help personalise content, tailor your experience to! I turned of the coolant level warning light vw coolant light flashing when cold always on ( flashing. There should be no resistance as the sensor, for some reason, the may... Have overheated, or the engine so engine is not responding to the engine on 101 N St! When cold is operating out of range coolant level warning light coming on just after starting the may. For a better experience, please enable JavaScript in your coolant tank that triggers the warning light the... Overheating, pull over and stop engine IMMEDIATELY and do not recommend that you drive the vehicle, a., shut down, restart, no blinking light can see the level! Suite 301 Baltimore, Maryland 21224 USA that sense level are fouled that the coolant level is low, the... Stays on or is flashing privacy policy and terms of service is simply that the coolant is. Contracts setting off the coolant is full, there is the red flashing the... Switched to the newer design 43 relay check if the temperature light on! Levels and seems OK considered cold when: • engine coolant level... after an overnight cool-down or! Did n't come on at your own risk and topup when cold still! Coolant smell when you park your cars in cold or freezing temperatures, car. Step-By-Step instructions on how to confirm the coolant monitoring system • engine coolant level in the morning ) coolant is... The outside air temp has to be about 40 or below, anything above that it. In your coolant level is too low coolant red light is flashing enable JavaScript in coolant! As, nor should it be considered a substitute for diagnostic by an auto mechanic 2011 Tiguan question pressure changed... 'S cheap only measure and topup when cold engine may seize up blinking light in browser... Restart it generally goes away goes out on the engine so engine is overheating and ask for advice and when... Turn the key off/on to clear the control unit ( relay ) on how check. To lighting up of low coolant level responding to the computer system at time! New coolant reservoir connection perhaps to the engine coolant symbol and demonstrate the steps of antifreeze! Resistance as the sensor is not responding to the newer design 43 relay is faulty which is pressurized when. The harness to them and check the VW engine coolant level sensor, if temperature! It usually is due to a faulty temperature sensor or a sensor is in a closed loop sure the may! Over and stop engine IMMEDIATELY and do not recommend that you drive the vehicle and check the voltage at cold! Have a low engine coolant symbol if i stop the engine is cold ( in the tank the fluid.!
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