The water pump is an essential component of any car’s engine cooling system. It is responsible for circulating coolant through the engine, preventing overheating and keeping the engine running smoothly. In BMWs, the water pump is often made of plastic and is driven by a belt or an electric motor.

Water pump failure is a widespread issue among BMW owners, and it can cause severe damage to the engine if not addressed promptly. In this article, we will take a closer look at the causes and symptoms of water pump failure in BMWs and discuss how to prevent it from happening.

Causes of BMW Water Pump Failure

The most common cause of water pump failure in BMWs is a broken impeller. The impeller is the part of the water pump responsible for circulating coolant through the engine. Over time, the plastic impeller can become brittle and crack, leading to a loss of coolant circulation and subsequent engine overheating.

Another common cause of water pump failure in BMWs is a leaking shaft seal. The shaft seal is responsible for keeping coolant from leaking out of the water pump. If the seal fails, coolant will leak out, and the water pump will lose its ability to circulate coolant through the engine.

Symptoms of BMW Water Pump Failure

There are several signs that BMW owners can look out for to identify water pump failure. The most common symptom is engine overheating. If the engine temperature gauge starts to rise above normal levels or if the warning light comes on, it is a sign that the water pump may be failing.

Another symptom of water pump failure is a coolant leak. If there is a coolant puddle under the car or if the coolant level is low, it is a sign that the water pump may be leaking. Additionally, if the coolant reservoir is empty, it could be a sign that the water pump is not circulating coolant through the engine.

Lastly, a noise coming from the water pump area can be a sign of impending failure. If the water pump is making a whining or grinding noise, it could be a sign that the impeller is damaged or the shaft seal is failing.

Preventing BMW Water Pump Failure

Water pump failure can be prevented by following BMW’s recommended maintenance schedule. BMW recommends replacing the water pump every 60,000 to 90,000 miles or every 6 to 7 years, whichever comes first. It is also essential to use BMW-approved coolant and to flush and refill the cooling system every two years.

Regular inspections of the cooling system can also help prevent water pump failure. BMW owners should check the coolant level regularly and inspect the water pump for any signs of leaks or damage.

Lastly, it is essential to address any warning signs of water pump failure immediately. If the engine temperature gauge rises above normal levels or if there is a coolant leak, BMW owners should take their car to a BMW-certified mechanic to have the issue diagnosed and repaired promptly.

Repair Your BMW at Tanner Motors

Owners of BMWs should be aware of the symptoms of water pump failure and should take their car to a BMW-certified mechanic if any issues arise. By taking the necessary steps to prevent water pump failure and addressing any issues promptly, BMW owners can ensure that their car continues to provide them with a smooth and enjoyable driving experience for many years to come.

It is essential to choose a reputable mechanic to diagnose and repair any issues with the water pump or cooling system. A qualified and experienced BMW-certified mechanic will have the knowledge and expertise to diagnose and repair water pump failure effectively, ensuring that the engine continues to operate smoothly.

At Tanner Motors, our repair shop is here to help you get your BMW running in top condition. We offer top quality service and only use genuine OEM parts so that you can be sure that your vehicle is taken care of the way it should be. Our experienced technicians are well-trained on all existing BMW models and are highly efficient and capable in their diagnostic services. Scheduling an appointment with us couldn’t be easier; just give us a call at 602-241-9888 or stop into our shop located at 10221 North Cave Creek Road, Phoenix, AZ 85020. We look forward to helping you keep your BMW running smoothly!