My 03 Mercedes CLK 55 AMG. It has coolant but it said ‘check coolant’ in the dashboard
My car l was running the car everything was fine into a week ago the car start said need coolant l but the coolant put coolant but the dash continue said coolant visit a workshop, another thing is event lam driving the car run good event l stop and come back the car dosent whant to turn on l need a diagnostic .To see was wrong with the car
Experienced mechanics share their insights in answering this question :
Hi. Unless you are having to repeatedly refill the coolant system – which indicates a different problem, the false "low coolant" issue may simply be a failed sensor in the coolant recovery tank. It is not recognizing that there is adequate fluid in the tank. The scenario you describe where the car will not start after being driven, then parked suggests a "heat-soak" issue for an electrical component (crank/cam position sensor, starter solenoid, neutral safety switch, etc.). If you would like to have this looked at, a certified technician from YourMechanic can diagnose the starting issue and follow through with repairs.
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You are low on coolant if you receive this alert. To make it go away, you only need to top out your coolant. To be safe, it`s crucial to look for any coolant leaks, just in case your Mercedes loses coolant.
If your coolant light is on, but the coolant is not low in the reservoir and it appears there are no leaks, then your vehicle may have a coolant sensor malfunction. A faulty coolant sensor can falsely trigger the dashboard warning light.
What causes the engine coolant warning light to come on? The light could be caused by several factors, but the most likely is either a loss of coolant or a fault with the sensor. A coolant loss could be caused by a leak somewhere in the system, such as a split hose or a hole in the radiator.
You don`t have to open the radiator cap to check the level. Instead, check the markings on the side of the reservoir. If the liquid reaches the “full” marking line, you`re good to go. If it doesn`t, remove the radiator cap and add the coolant or a 50/50 mix of coolant/water.
If the coolant level warning light comes on when you are driving, the best thing to do is pull over as soon as possible in a safe place. You should then allow the engine to cool down for at least thirty minutes before attempting to go near the engine.
If your car has a low coolant you can drive for some time. It really relies on the level of coolant. If it is low but it is above the minimum, you can drive your car for a few days. But if it is below the minimum, please do not even try to run your engine.
If the coolant level is dropping and there is no external leak evident, then the coolant is probably leaking internally, into the engine. If the car has recently overheated then this could have caused the head gasket to fail. If it has, it could be leaking coolant into the combustion chambers.
Can you top your coolant up with water? Coolant should only be topped up with water in case of an emergency when the coolant liquid level is lower than it should be. While topping up with water will help you get safely to the nearest RAC Approved Garage and identify any issues, it shouldn`t be relied upon.
As we`ve said, the coolant light is telling you that your engine`s temperature is getting too high and this requires your immediate attention. If you continue to drive, ignoring the warning light, you are submitting your engine to temperatures that could cause permanent damage, resulting in expensive repairs.
PEAK ORIGINAL EQUIPMENT TECHNOLOGY ANTIFREEZE + COOLANT for EUROPEAN VEHICLES – BLUE 50/50 PREDILUTED is an ethylene glycol-based antifreeze/coolant specifically developed for use in any European vehicle requiring a Blue silicate-enhanced hybrid organic acid technology (Si-HOAT) formula.
Every vehicle manufacturer, including Mercedes-Benz has developed its own coolant or requires a specific coolant that is unique to individual years and models. There are many colors of coolants to help distinguish each including yellow, blue, purple green, red, and orange.
You can change your coolant yourself in about an hour. You`ll need to invest in an air-powered refilling tool to remove air pockets from the cooling system as you fill. You`ll save about $50 on your first coolant change and about $100 on each one after that.
If your coolant level is too low (below or near the lower mark), top it up using a 50/50 mixture of water and antifreeze (for normal driving conditions), or pour pre-mixed antifreeze straight into the reservoir. You can use clean tap water in an emergency, but antifreeze should be added as soon as possible.
If your car`s coolant level is dropping, it is almost always due to leaks in the cooling system – the hoses, radiator or radiator cap, for example. Symptoms of this can be a rising temperature gauge, a sweet odour (the smell of antifreeze), problems with your car`s heater or increased fuel consumption.
Relevant Questions and Answers :
the most relevant questions and answers related to your specific issue
My 03 Mercedes CLK 55 AMG. It has coolant but it said ‘check coolant’ in the dashboard
ANSWER : Hi. Unless you are having to repeatedly refill the coolant system – which indicates a different problem, the false "low coolant" issue may simply be a failed sensor in the coolant recovery tank. It is not recognizing that there is adequate fluid in the tank. The scenario you describe where the car will not start after being driven, then parked suggests a "heat-soak" issue for an electrical component (crank/cam position sensor, starter solenoid, neutral safety switch, etc.). If you would like to have this looked at, a certified technician from YourMechanic can diagnose the starting issue and follow through with repairs.
No coolant in the reservoir. Seen low coolant message. I added 2 quarts of 50/50 coolant. Still getting the message. How much coolant doe it need?
ANSWER : Hi there. For the coolant light to go out, you would need to have the coolant between the low line and the full line for the light to go out. If the coolant is low and keeps on being low, then look for any signs of coolant leaks. You may have to use a coolant pressure tester to pressurize the reservoir to allow the leak to be found.
If you need further assistance with the coolant being low and the warning light being on, then seek out a professional, such as one from Your Mechanic, to help you.
Over heating coolant not siphoning back into coolant over flow tank
ANSWER : Hey there:
It’s common for many mechanics to make the mistake of mis-diagnosing the cause of an overheating situation; especially when they assume it’s a thermostat issue. The problem could be caused by a blockage in the coolant tubes running from the radiator to the overflow tank and back to the radiator. However, it also may be due to air trapped in the coolant lines. I think a good idea would be to contact a different ASE certified mechanic, such as one from YourMechanic, and have them complete a coolant flush, which should remove any blockages in the coolant tubes and may solve your problem.
Topped off coolant with Prestone Universal Coolant. Manual says to use MOPAR HOAT. Do I need to get a flush before a long trip?
ANSWER : Not knowing which exact type of coolant was used to refill the system after the block heater install, I would consider flushing the cooling system and refilling with the correct coolant. Years ago, we just had "green coolant that went into every car. In recent years, different manufacturers call for different coolants. There are a number of different metals in contact with the coolant nowadays. The engine block can be cast iron, the cylinder heads can be aluminum. The head gasket may have steel rings surrounding each cylinder bore. The coolant has to be able to interact with all the different metals and not cause additional corrosion. Mixing different coolants can cause some issues. Sometimes the mixture can cause gelling and clog smaller passages in the radiator and heater core. They can also interact poorly with the different metals when mixed. I’ve replaced a few heater cores because they were so badly clogged from mixed coolant. Considering these things and the climate you are taking the vehicle to, a cooling system flush is definitely a good idea.
Possible coolant in my oil but no oil in the coolant. Use about 1 l of coolant per 100km.
ANSWER : Check the transmission fluid. If all testing eliminates the head gasket, cracked cylinder head, etc, it may be a cracked radiator.Transmission fluid is sent forward to the radiator to be cooled. Ir runs into what is typically called the "side tanks" of the radiator. So the transmission fluid and coolant are both flowing through the radiator and kept apart just as the engine oil and coolant are kept apart in the engine by the head gasket, coolant and oil passages, etc. If the tank in the radiator is cracked internally, transmission fluid may actually be forced into the coolant as transmission fluid is under higher pressure than the coolant. Short of a cracked head gasket, cylinder head, or engine block, it’s really the only other source of any type of oil getting into the coolant unless the vehicle is equipped with an engine oil cooler as well.
Flushed coolant month ago now glitter in radiator
ANSWER : Hi there. Quite frequently when red and green coolant is mixed and inside the coolant tubes for a long time, it can cause excessive wear of the coolant tubes. The ’glitter’ you see may be excessive debris that may have worn off the coolant hoses. Whether or not you can continue to run with this coolant; it shouldn’t be a problem. However, I would recommend that the next time you flush your coolant, that you also replace the coolant hoses and tubes.
My car has a coolant leak
ANSWER : Hello. The most common cause of a random coolant loss on this vehicle is a leaking intake manifold gasket. It commonly starts leaking coolant into the engine, which will be burnt off or will leak externally. I typically do a pressure test and a dye test on the system first to see if I can locate an external leak. If nothing is found, then I do a block test to make sure that there is not a head gasket issue. If nothing shows up there, then I replace the intake gaskets. If you need to have this done, consider YourMechanic, as a certified mechanic can come to your home or office to diagnose the coolant leak and replace the intake gaskets if necessary.
Coolant flush before winter?
ANSWER : I would recommend flushing the coolant and adding new since you just bought the truck and may not know the history of the maintenance prior. The reservoir is connected to the radiator and simply allows the coolant to flow back and forth between the two as it heats and cools.
