As a BMW owner, we are sure you’ve been reminded how important it is to check on your alternator. You might be wondering why that is and it’s because one common but often overlooked issue is an oil leak from the alternator seal. While this problem may seem like a small issue at first, it can lead to bigger problems like major damage to your engine and electrical components.
What is the Alternator Seal, and Why Does It Leak Oil?
The alternator seal is part of your BMW’s alternator, which is responsible for powering your electrical system and charging your car’s battery while the engine is running. The alternator uses a belt to spin a rotor inside the alternator housing, which creates electrical energy. In some models, the alternator also includes a seal to prevent oil from leaking out of the engine and into the alternator housing. This seal helps protect the alternator from being damaged by the oil and keeps your engine lubricated.
As time goes by, this seal can degrade, dry out, or crack, allowing engine oil to leak into the alternator area. Once this starts happening, oil will start accumulating inside the alternator housing, which then starts causing a whole bunch of bigger problems.
Symptoms of a Leaking Alternator Seal
You might be out enjoying the rich history of Amherst, NH when you see an oil leak coming from your BMW. It could be coming from your BMW’s alternator seal and it’s best to get it looked at and fixed right away. You most likely aren’t going to see oil spraying like a garden hose that has a hole in it, it will most likely show up as a small amount on the ground under your BMW or if you pop the hood you can see some on the alternator casing.
If the alternator seal is leaking oil, it can cause the alternator to not work the way it should. Oil that seeps into the alternator can lead to electrical issues which can mean poor charging performance or intermittent charging failure. If the alternator is not functioning properly, you might start seeing your dashboard light up with the battery light or alternator warning light. Instead of ignoring the light, you are going to want to have a technician take a look and see if it’s just a simple fix like the alternator seal or something bigger.
When oil leaks into the alternator, it can affect the bearings and internal parts of the alternator. As you sit in your vehicle whether you are stopped or driving, you might start hearing grinding or whining sounds. These noises are not your car’s way of giving you front row tickets to a band concert, it’s a warning that something is going wrong under the hood.
A failing alternator due to an oil leak can result in poor battery charging, leading to the battery not holding a charge. If your BMW’s battery keeps losing its charge or if the car struggles to start, it may be because the alternator is not providing enough power. You can find yourself not being able to start your car or feel like you are in a disco with flickering lights!
Replacing a BMW Alternator Seal
Before replacing the alternator seal, our technicians at Ultimate Bimmer Services will inspect your BMW to confirm that the alternator seal is the cause of the oil leak. We don’t just jump into replacing something that may not even be the problem – we’ll make sure that’s where the leak is and let you know that that is truly the issue.
Once we know that the alternator seal is the problem, the alternator will need to be removed from the vehicle. The alternator is typically located near the engine’s front, so it may take some effort to remove, but luckily we know the ins and outs and can get this done pretty quickly.
With the alternator removed, the old seal can be taken out and replaced with a new one. We only use high-quality replacement seals that are specifically designed for your BMW’s make and model. If you don’t, you can end up with a leak right away or not long after replacement.
After we get the new seal on and the alternator reinstalled, our mechanics will run a series of tests to make that the alternator is working properly and that the oil leak has been resolved. We don’t want you coming in and leaving with the same problem, so we will always test the system.
Why You Should Trust Ultimate Bimmer Services
At Ultimate Bimmer Services, we specialize in providing high-quality repair and maintenance services for BMW owners in the Manchester, Bedford, Hollis, and Amherst, NH areas. Our team of experienced technicians love BMWs and know that getting you back on the road is important whether you are traveling or just using your BMW as a daily driver for work.
