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by the sounds of it sounds like one of 2 lights that light up, the one is indicating that the coolant level is low so this would need checking, if its not low then it may be the next problem im going to tell you about, is the wavey water picture above a tank or below, if the wavey part is above the tank on the warning light then its coolant level, if the coolant level is ok then chances are either the sensor is faulty of the connections are faulty, the level sensor is located in the lid of the coolant filler cap so unplug the connector and plug back in and see if that makes any difference, if not then the sensor needs replacing,
now if the wavey water symbol is below an object on the warning light then this is telling us that the fuel filter has sensed their is water setting in the filter, now this only happens with diesels and usually its a faulty sensor and not that their is water in the fuel, if it is the fuel warning light then most of the time it cant be fixed unless the sensor is changed but even then its no guarantee it will put the light out,
This indicates a low level of coolant in the coolant bottle/resevoir..... this symbol represents the radiator or coolant system liquid level.
Warning comes on to warn of coolant level too low.
When the engine is cold...remove the cap and check level. Add 50/50 antifreeze/water to level indicated on the side of the coolant bottle or tank.
Reservoir Bottles/tanks are usually transparent and you can see the coolant level through the plastic.
When coolant topped off to correct level, lamp will go out automaticly...no need for scanner or shop to turn it off. It will come on as a 'self check' when you turn on the ignition and if level is okay will go out when engine starts.
i am a masrer volvo ASE MASTER TECH yes the one with thermometer is the coolant low and square sounds light the Generator light and why is coolant low???? is fan working properly and relay?? and under thermostat there is a coolant temp sensor and to clarify meaning wet is that the coolant temp sensor has enough coolant to the sensor INSIDE THE THERMOSTAT housing
there can be a yellow light in the cluster that looks like a small radiator or box with waves inside of it to indicate water. This light means that the coolant level sensor has detected a low coolant level. Typically the expansion tanks inside of these cars will crack from heat and age. A simple diagnosis is to check your coolant level and top it off. Do not forget to bleed it by unscrewing the bleeder screw found on the upper radiator hose while filling up the reservoir found on the right hand side of the radiator. once the coolant has been filled, tighten the bleeder screw back down but be careful not to over tighten. and finally screw on the expansion tank cap. run the vehicle to operating temperature and use a flashlight to inspect the engine bay for leaks. If there is a leak, it will need to be repaired. possible leaks are a cracked expansion tank, leaking radiator hoses, or a leaking water pump or thermostat.
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