![]() ![]() In summary, frequent short trips such as shutting down your car with the blue light on are bad for your engine. If I could figure out how to attach a file, I would post a copy of a service bulletin Mazda that explains fuel dilution with GDI engines and how to prevent it. If you change the display switch, to show the "analog" temperature gauge, it usually takes 10-15 minutes to reach the operating temperature of about 200 degrees F. The blue light is also to give you an idea of long your engine takes get to minimum operating temperature. As you can imagine, oil diluted with fuel does not lubricate well. GDI engines differ from the past port fuel injection engines in that injection pressures are higher and can cause fuel leakage past the piston rings into your oil. To prevent further issues, have your Mercedes-Benz’s coolant system checked regularly, along with keeping up with other preventative maintenance measures.Is your CX-5 the non-turbo version? Since modern engines have gas direct injection (GDI), it is important to run them long enough to prevent fuel dilution. In other words, the engine hasnt quite heated to the point where. Then after about 15 minutes the blue light suddenly came on again. Everything was fine until this morning - it was very cold and the blue temperature light was on as normal when I started it and then went off when the engine warmed up. What steps need to be taken to turn light off: Once you get to your neighborhood Mercedes-Benz service center, your #Mercedes-Benz mechanic will perform a complete coolant system inspection to see if a leak is present, or what the cause is, and repair it. When its blue, that means your engine isnt quite at the operational driving temperature yet. It has just been in to have the radiator drained and new coolant put in. If your cars computer senses a problem with the. If the light remains and your vehicle is severely overheating, do not try to drive, call a tow. You may see your check engine light come on if your coolant temperature sensor is failing or has failed. If the light disappears when you restart the vehicle, proceed to the nearest Mercedes-Benz repair shop for proper inspection. ![]() If the coolant level is low, you can add some water. DO NOT open the hood while the vehicle is hot. Any time this warning light comes on, our advice to. This waiting period is important for your safety because the radiator hose and cap need time to cool down. If your check engine light starts flashing, this could also indicate a faulty coolant temperature sensor. ![]() Let your Mercedes-Benz cool down and wait at least 30 minutes to check the coolant level. Doing this will lighten the load from the engine and circulate the remaining coolant through the radiator and heating core to help remove heat. Use a 50/50 coolant-and-water mix, as specified in your owner’s manual. Simply top up your coolant to the Max or Full level when the engine is cold. If the engine temperature warning light comes on while driving, turn your vehicle’s heater on the highest level, and turn every other system off in the car, until you can safely pull over and turn the engine off. Solution: This is potentially an easy fix. Many times this is caused by improper coolant fluid level, or a leak due to a cracked hose. If the temperature light keeps flashing, check if the cooling fan is spinning by looking at it. Your check engine light is on: If the engine’s computer detects a problem with the coolant temperature sensor, or its circuit, it will turn on the check engine light. Restart the vehicle and check if the temperature light has turned off. But a faulty engine coolant temperature (ECT) sensor can cause havoc on an engine or its related systems. If the engine coolant level is low, add engine coolant. If the light stays on after start-up, an issue with the coolant temperature sensor has been discovered. Allow the engine to cool down, then check the engine coolant level. What to do when it comes on: When your vehicle starts, this indicator light will illuminate and then go off. Continuing to drive your Mazda in this condition. It only turns on during you start the vehicle, its just weird because it usually happens first thing in the morning the car has been resting over night and not in. The high temperature light does not turn on while she is driving, even if she is going 65 MPH on the freeway it does not turn on. Engine overheating can cause significant damage to you Mercedes-Benz if not quickly remedied. If the automatic transmission warning indication/light illuminates, the transmission has an electrical problem. Coolant is full, no steam coming out of the engine. What does it mean: This warning light indicates when your engine is too hot and there is a risk for engine overheating, as detected by your Mercedes-Benz’s computer. What does it look like: A thermometer with wavy lines, or it may even say “temp” or “engine overheating.”
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