BMW 4 Series 428i Engine Overheating Light / Problems / HOW TO FIX!

BMW 4 Series 428i ( Production: July 2013 – September 2020 ) is recognized as one of the most well-rounded luxury small cars. That is a great car with strong power and great acceleration; it is good for WOT(Weaving On Throttle), curves, or rain type of driving.

BMW 4 Series 428i remained a fan-favorite luxury sports car that comes in three variants: the coupe (internal codename F32), the convertible ( internal codename F33 ), or the gran coupe ( internal codename F36 ) all the models which are characterized by extremely high reliability , up-scale cabin and rather spacious seating. There are potent turbocharged and fuel-efficient engines, rapid handling, and the focus on the driver zone.

Besides, similar to any other car, there are certain issues associated with the car such as the F32 F33 F36 BMW 4 Series 428i engine overheating issue. We will describe those in more detail in one of the subsequent sections.

Engine Overheating Light

The BMW 4 Series 428i engine overheating warning light is used to provide information on actual engine temperature. Also, lights that are on the dashboard gauge clusters will be on indicating that the engine is hot, that is, the temperature is high.

The light actually blinks, this means that the situation that surrounding the touring car is threatening and if it is not dealt with, it could cause a lot of damage to the car. Thus, the emergency message of the temperature warning light is real, and people need to pay attention to it. This gauge also shows the excessive heat of the engine when the pointer goes up to the red or oscillates on the upper side of the gauge.

Engine Overheating Light of BMW 4 Series 428i

Owning a BMW is a privilege, but the car’s engine and maintenance are critical to preserving your integrity, as issues might occur even after your best efforts. The BMW 4 Series 428i goes into limp mode automatically when the car engine experiences a recurring issue of low coolant.  The yellow light illuminates on your dash indicating “Check Engine” or “Service Engine Soon” which means you should get your BMW 4 Series 428i functional as soon as possible. Ignoring those continuous alarms could end up causing preeminent damage to lavish engine elements.

BMW 4 Series 428i Engine Overheating Reasons

Overheating of BMW 4 Series 428i engine is an indicator of a severe problem. Therefore, you must not think that you can manage it later because it can irreversibly harm the car engine. Some of the causes of the popping of overheating engine light on the car’s dashboard include:

Wrong Type of Coolant

Different cars require different coolants. Furthermore, every vehicle needs a specific type of coolant according to the environmental conditions to function at optimal performance levels. Car performance is badly affected if you use the wrong coolant or mix different coolants, as it does not give proper viscosity to the car’s specific engine.

The coolants should not be mixed as they do not react well because when they are combined, they form a jelly-like substance that can completely stop all coolant flow leading to overheating that fails the engine. It may also increase corrosion in the radiator, and your engine may be prone to overheating with improper coolant-to-water-ratio. BMW makes its own brand coolant with specific viscosity for its unique engine design, so you should consider it first before going to other ones.

Coolant Leak

Like every other vehicle, BMW 4 Series 428i also needs coolant/antifreeze for the regulation of the temperature of the engine at optimal levels. Your engine strives hard to keep the engine temperature at the appropriate level, especially in the summer season. Therefore, coolant leakage can happen, which can create a hazardous situation for your car’s engine. Coolant or antifreeze plays a pivotal role in how well your car’s engine works, as without a proper amount of antifreeze, your engine can overheat. Hence, the coolant must be checked properly.

The easiest way to identify the coolant leak is by checking underneath the engine for any puddles forming when you are parked. Poorly tightened hose clamps, dilapidated houses, or a box of rogue highway nails are also some reasons behind the leakage of coolant that turns the radiator of your car into Swiss cheese.

Water Pump Failure

In the case of this particular car, the water pump issue is the major contributor to instances of the car engine overheating. Pumps are of great importance especially in circulation of the coolant to enable the engine obtain the right temperature. Circulation of the coolants in the circuit is halted when the water pump is damaged or experiences problems due to the wear of the belt since it ceases the entire function, and the car eventually overheats.

Worn-bearing is the most common reason for water-pump failure. Water pump failure can happen at any time because of various reasons like mixing coolants, contaminated coolant, or using the wrong coolant, etc., which causes damage to the seals and bearings of the water pump leading to the impeller shaft failing.

Clogged Cooling System

Proper coolant flow is necessary to maintain the temperature of the car’s engine as it absorbs the heat. Malfunctioning thermostats, natural buildup, and debris are the reasons behind the clogged cooling system. Overheating light on the car blinks again and again when the contaminated cooling system cannot circulate the coolant in your car’s engine.

Maintenance of Engine Overheating Light

An overheating engine is more than a bummer, so you must take good care of it because if you don’t, it will leave you on the side of the road and will cost you an expensive bill. Some of the effective preventive measures for engine overheating light are:

• Use the coolant that is specified in your owner’s manual.
• In case of overheating light, it’s better to stop your BMW 4 Series 428i and let the engine cool down rather than push it on risk.
• Follow a regular preventative maintenance schedule that includes changing out the coolant in the radiator.
• Regular service or maintain the water pumps of your car, or replace them when it wears down.
• Turning on the car is an efficient solution to getting rid of some heat from the engine block.
• Check the contaminations in the cooling system regularly to avoid hazardous situations.

Conclusion

With the BMW 4 Series 428i, the owners’ most worrying difficulty is a rise in the temperature gauge. Overheating engine light is accompanied by many issues such as the leakage of the coolant, the use of a wrong type of coolant, failure in the water pump, and blockage of the cooling system. This is a serious sign that can result to very costly repairs in the future if ignored. Stick to the services to minimize on the possibility of overheating engine light and take proper care of your car by ensuring you drop it for servicing if the light is included on the car’s dashboard.

BMW 4 Series (F32/F33/F36) – Specifications