You might look at the manual , specifically pages 4 and 5, available on Toyota's site to find out what the light means. Have a look at pages 281-283 of the Owners Manual An advanced formula product, designed for use in passenger cars and also heavy duty diesel engines. Coolant manufacturers updated the formula to combat corrosion in new materials and changed the color to orange. Coolant or more aptly antifreeze is that colored liquid that prevents water from freezing in winters and from overheating in summers. Prestone is yellow, but many other coolant manufacturers use different colours. If you see the coolant light show up on your dashboard, it could mean coolant levels are running low, so check the gauge on the side of the coolant tank under the bonnet and top up if necessary. While OAT antifreeze is designed to last much longer than IAT antifreeze, it’s still a good idea to have your orange coolant checked about every 50,000 miles. "Green symbol" isn't very specific. Presume this is the low engine coolant temperature light which has a 'C' and a 'thermometer/water' symbol' You haven't said whether your car is petrol, diesel or hybrid. “These days, there’s no real reason for a coolant manufacturer to use a certain colour, so it’s not easy for you to know what chemicals are in the coolant just by seeing whether it’s blue, green, yellow or orange. _____ It's not the ride, it's the rider! The most common reason for the coolant light to become illuminated is simply that the coolant level is too low. I've had my liftback automatic for a week now, and when I went out in it today I noticed my coolant light stayed on for what seemed like a long time after all the other warning lights went off. What causes the coolant warning light to come on? There has been a very lively discussion going on about "Red" or Dexcool® antifreeze and regular "Green" antifreeze. It is a unique combination of corrosion inhibitors utilizing a low silicate, phosphate free formula. I am just wondering if it's okay to add the blue bmw coolant to it. himy first post on here I have just purchased a yaris 1.4 diesel, I have noticed that there is a green coolant light staying on for quite a while with the word cool underneath it does eventually go off after prob around 10 mins is this normal?thank you I am sure the green Preston antifreeze/coolant is for ALL makes and models so it should be okay. You may need to book a coolant change. But when the low coolant sensor turns on and off no matter what the season is, you may have several questions in mind. EKWB EK-CryoFuel Premix Coolant, 1000mL, Acid Green PrimoChill Liquid Utopia - 15ml Bottle Thermaltake Pacific DIY OD 16mm (5/8") x ID 12mm (1/2") Water Cooling PETG Hard Tube Bending Kit CL-W093-AL00BL-A Get deals on automotive parts, truck parts and more. Coolant warning light Without any coolant, your car’s engine would get so hot it’d effectively ‘weld’ itself together. PolyFreeze™ Conventional Green. It's normal.At my Yaris, the light remained green for 2 minutes and it was 43C οutside! Coolant Light. There may be a floating sensor in your coolant tank that triggers the warning light when the level drops. Low Coolant Light Comes On and Off – 4 Common Reasons. Buy Antifreeze / Cooling System Regular Green Gallon Full Strength - NAF 1GAL online from NAPA Auto Parts Stores. Vincent Ciulla is a certified master automotive technician who has diagnosed and repaired light trucks, domestic and foreign cars, and diesel engines, for more than three decades. – Compro01 Mar 17 '14 at 14:15 Am just wondering if it 's not the ride green coolant light it 's normal.At my Yaris, the light remained for., phosphate free formula diesel engines `` Red '' or Dexcool® antifreeze and regular `` Green '' antifreeze on! Ride, it 's okay to add the blue bmw coolant to it coolant it! 'S okay to add the blue bmw coolant to it, designed for use passenger... 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