Signs That There is Something Wrong with Your BMW 530i Radiator
The radiator in your car helps in maintaining a cool temperature under the hood. When the radiator fails, your vehicle will have a difficult time cooling down and that could lead to engine overheating. It's not uncommon for radiators to break down, and the BMW 530i radiator is no exception. Below are some signs that indicate failure in your car's cooling system:
If you notice a trace of coolant seeping out from the underside of your vehicle, you need to check your radiator reserve tank for cracks or holes. Sometimes, the leak can be very bad that the amount of coolant inside the overflow reservoir becomes nearly used up. When this happens, you need to seal off the openings where the leaks are coming from. Doing so will help you save on coolant and make your radiator function efficiently.
When radiator coolant from the overflow reservoir mixes with engine oil, you can be sure that there is an internal gasket problem in your vehicle. Engine oil should never mix with the coolant at all costs. If it does, the oil will no longer be efficient in lubricating the engine, and that can lead to engine failure. You cannot use your vehicle until the problem is fixed, so it's best to close all holes that might lead to coolant leak.
Radiator fan breakdown
Your car's cooling system is made up of different components that help dissipate heat from the engine. If one of the parts break down, your radiator becomes less efficient in cooling the engine block and that could lead to overheating. Sometimes, the radiator fan malfunctions, so air is not properly directed to the engine. This decreases your radiator's capacity of cooling your vehicle. The cooling fan should turn on automatically once the vehicle remains at idle. If it doesn't, then there must be something wrong with the fan (perhaps with the blades or with the fan shroud).
The coolant in the radiator circulates through hoses connected to the engine. These hoses can crack or split when the clamps that hold the ends of the hose together are over-tightened. If the hoses have cracks, the coolant directed toward the engine could leak. You'll need to replace the hoses with new and sealed ones to prevent the coolant from escaping.