Wait for the engine to cool down before topping up. the tank is under the hood and located next to the fender on MB's. Topping it up at cold might end up excess coolant coming out when the engine runs hot. Waterpump leaking sounds serious. Just fill up the tank to the maximum limit and keep an eye on the engine condition and the rate of coolant usage. Use a 50/50 coolant-and-water mix, as specified in your owner’s manual . It is the same as a low collant message. Hopefully not and instead the coolant was not filled exactly high enough. Loss of the liquid can lead to the overheated condition but overheating can also contribute to the coolant loss. Because that last checkup appointment was missed, or because it was an exceptionally hot day, it is a common response for even the best-designed vehicles, like Mercedes, to overheat in such conditions. You should get the coolant level checked and corrected asap and have the system scanned for fault codes if the coolant level is correct. Continue turning cap 1 to the left and then remove it. Hi all, I have somewhat similar issue. Its only this week that I start getting the "top up coolant" message and it only happens when I'm driving up the slope into the car park. The dealer says Mercedes-Benz will give a 50 per cent reduction on … Engine overheating and coolant are closely related to each other. My name is***** message is not a maintenance reminder. Mercedes Benz ; MG ... remaining pressure to be released. Simply top up your coolant to the “Max” or “Full” level when the engine is cold. The fluid level in the expansion tank is low. Yesterday it came back from its service and the dealer informed me I have two coolant leaks on the engine. As previously mentioned later model A class do not have the vent valve in the radiator hose. As … If you are able to top off the coolant, or use a bottle of water for now, it may help bring your car out of its heat spell. If the check coolant level message is displayed the cooling system is either slightly low on coolant or there is a fault in the system. Checking the coolant level Slowly turn cap 1 to the left by half a rotation and release any excess pressure. ... Avoid making any long journeys without sufficient coolant: you should stop and top up as soon as possible otherwise you risk causing serious damage to your car. A Mercedes-Benz radiator lawsuit has been dismissed after the plaintiff failed to convince the judge that radiators in 2004 and earlier C-Class and CLK-Class vehicles are defective. Typically the sensor, which monitors the coolant temperature, knows how to adjust to varying temperatures depending up the status of your car; running, warming up… Once the pressure has subsided, you can remove the cap fully, check the level of the coolant and top up as required. Top up the coolant if necessary. Your coolant light will come on when the sensor senses an incorrect change in the temperature in your system. There is sufficient coolant in expansion tank 2 if the coolant is at the MAX mark. I've checked the coolant water level and it is about 1cm below the water marker. My Mercedes-Benz C250 CDI W204 is four years old with just under 32K miles on the clock. Used Coolant fluid They highly advise I change both, at significant costs. Do keep an eye on the reservoir level for a few days after changing the coolant, top up as/if required from the remaining coolant purchased, diluted 50/50. For the next week, check your coolant level frequently (with a cold engine), to be sure that there is no ongoing leak that requires regular top-ups. You can then have a look for any obvious leaks in the coolant reservoir or hoses, although these may be extremely hard to see. Overview. Mercedes-Benz coolant levels warning light : ... keep your speed low and avoid braking suddenly. 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