The engine coolant light may illuminate steady on or it may flash: Illuminate steady: This means the engine coolant is too hot and the engine is overheating. If the engine is not receiving enough coolant, it will overheat. Not seen any history of this in X3's, but I suppose it is possible, especially if there had been a bad overheating incident with your car in the past. The first sign of a car overheating is either when the needle on the temperature gauge pushes its way into the ominous red zone or the “Check Engine” or “Temperature” malfunction indicator light on the dashboard casts a sinister glow. Well I have noticed puddles of coolant under my car, however the car does not over heat the temp gage does stay in the middle.No lights are on the dash.When I pop the hood to make sure there is still coolant inside I take the top off and the coolant will rise up and bubble not all the way back to the line though. Wait until the engine as cooled off and locate and slowly remove the coolant reservoir or radiator cap and check the coolant level. It’s another reason why your car smells like antifreeze but not overheating. When I rev the engine when bleeding, bubbles were present and at the same time coolant was boiling. However it is not overheating. Most likely you are low on coolant. Coolant Light blinks sporadically - yet car does not overheat S-Series Tech. The Fix: Refill the coolant to the proper level. If you continue to drive your car with low antifreeze your vehicle will eventually overheat. I was driving it today and the coolant light came on. I was driving a few days ago and all of a sudden my coolant light comes on in my 2006 330ci convertible (I have not done any work on the car recently). By Deanna Sclar . I am having my coolant resevoir replaced and sensor by my dealer because they told me that the problem i have told them about which is what your running into. Most people don’t check the fluid levels in their cars as often as they should. The electric cooling fan may not be coming on. In many cases, this can be too late to prevent expensive damage. A small amount of pressure should be released which is normal if the radiator cap is good. 1. Left alone, the liquid in the radiator eventually boils over, and steam rolls out from under the hood. It should be between the "Min" and "Max" lines. Listen to me, You better get that checked dude, thats how i lost my buick. Red Engine Coolant Light On or Flashing. When the engine is warmed up (hot) the coolant expands. The light just randomly came on today while I was driving, but the system is full. Coolant is not contaminated with oil, and oil on the dipstick and oil cap does look normal, no milky substance. I have had this issue for about a month now that the Low Coolant light turns on and, sure enough, the coolant is low, but the car is not overheating (is at the middle of the heating range, never goes over). and they said that some years had a bad sensor inside the tank that was a KNOWN problem. get ur water pump replaced, then seal any cracks with liquid glass. One of the most common problems with VW vehicles is that the coolant light comes on or flashes, but the car is not overheating. The coolant light comes on, but the engine is not overheating. The easiest way to find out is to read the trouble code memory and check the … I … I added coolant and it was fine so I drove home. 1995 buick regal. Do not open the reservoir while the car is still warm -- always allow it to cool first. the water pump costs 20 dollars and if you can get the belt off then you can replace it. If after you add coolant the lights comes back, you have a coolant … It may also allow coolant to leak externally. This problem is usually caused due to a faulty temperature sensor or a damaged wire harness. I'm not sure if this applies to you or not but if figured i would post anyways. The cooling system must maintain pressure and a proper coolant level or the engine will overheat. Jump to Latest Follow 1 - 8 of 8 Posts. I have a 2000 impala with the 3.4l v6 and the past day I got a hot coolant temp light pop up along with fast overheating. Especially if a car is a newer model, most people just assume everything’s OK, or that a light will show up on the dashb The light is not defective. Hey guys im new to this forum and I was wondering if I could get help. VW coolant light comes on, but the car is not overheating? A worn, weak, or leaking radiator cap will not hold pressure, lowering the boiling point and allowing coolant to boil out. But again, once the key is turned off, it reset and all is fine. Low Coolant. Common symptoms of a bad engine coolant sensor are overheating, difficult starting conditions, poor idle, check engine light ON and electric fans not working properly. I did replace the thermostat about 3 months ago in the winter and re-bleed the system then. It is NOT overheating and has NOT overheated. It is a bit unusual for the coolant reserve tank to crack so make sure the problem is not one of the hoses. Do you all … The flashing is either for low coolant or for overheating, and it sounds like you are having a low coolant problem. the light coming on but not overheating and not low fluid. Car started over heating today, changed upper sensor and flushed with new coolant, drove over an hour fine on the highway, now overheating and coolant light is on, but my cooolant res is full and coolant sprays out when i loosen the screw on the hardline above the IM. The blue light is only supposed to indicate low engine temperature, reminding you to go easy on the engine until the light goes out. The coolant level was a little low so I added coolant . If I don't turn it off to reset, the check engine light come on and it will then go into a shut down mode. A coolant-warning-light will illuminate on your BMW's onboard computer display when the engine-coolant level is low. Although, the coolant still was bubbling after an hour of bleeding. So, Im guessing it's just the sensor. An Internal Puncture. This coolant light also comes on for a low coolant level. Luckily, this is a quick and cheap fix. The Engine Overheating light comes on just two miles down the road. Even if there is no evidence of coolant in the oil from looking at the underside of the oil filler cap, a good plan would be to have any competent shop run a test for coolant in the combustion gases. It drains out the coolant very quickly and there is likely to be a puddle of coolant under the vehicle, so the problem is easy to spot. Overheating red light problem. Hi everyone I have a 2001 Beetle. 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. I've refilled the antifreeze and everything, but the - Answered by a verified Auto Mechanic We use cookies to give you the best possible experience on our website. Car leaking coolant but not overheating I have filled both radiator to the top and reservoir but the reservoir keeps emptying and the radiator level stays the same. DescriptionThis question was asked on the AskDAP Show Episode 1. Hoses are old, but no signs of leaks. After looking more into it we found a leak from.behind the engine of the side of the alternator. That is why the hoses get harder when warmed up. Just wait for the engine to cool, refill the cooling system, and install a new radiator cap. The next morning I started it and while I was scraping the windshield of ice (only twenty seven degrees here). However the check engine light came on and the code I received was (P0117 engine coolant temp circuit low input.) When the engine is cold the water coolant mixture is not under any pressure. Engine coolant level may be very low. The Fix: Tighten or replace the belts. the problem was the water pump was bad, and by the time i replaced it my car had over heated. To protect against overheating, most modern vehicles have an engine temperature warning light, which alerts you to a problem in your cooling system.The first sign of a cooling system problem often occurs when the engine is already in the process of overheating. Engine's drive belts may be broken or slipping. An audible alert may also be heard depending on your vehicle. 4. You will be able to find the leak just by observing the radiator and the hose. Car does not blow white smoke. I'd keep going as is but I definitely don't want to chance it. Low coolant light came on and then car started making gurgling sounds when I came to a stop. Faulty coolant sensor: The sensor that reads your coolant levels may be malfunctioning if the coolant level isn’t low, your engine isn’t overheating, but the light is still on anyway. An overheating engine can cause more problems especially if you let it go too long and end end up cracking your block. Baby born from 27-year-old frozen embryo is new record The Fix: Repair or replace the cooling … If you’re leaking antifreeze but not overheating or you have a car leaking antifreeze when parked, you still have a chance to repair your vehicle for a lower cost. Coolant external leak. Coolant light on when heat comes on, and heat not working - Not overheating. 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