A BMW 523i had an issue related to the auto transmission oil cooler. Hi Everyone, An estimate of 90% of automatic transmission failures is caused by transmission overheating. Overheating can almost always tell you that there is something wrong with the transmission fluid. Transmission fluid is the life-blood to your transmission. It provides crucial functions such as cooling to the lubrication and regulates the pressure. Without enough transmission fluid or effective fluid, your transmission will start acting out. The ideal fluid temperature is below 175 degrees, but as fluid ages, it starts to break down and lose its capacity to cool down the transmission. This is when transmission overheating occurs. According to BMW, the auto-transmission oil that comes with their cars lasts a lifetime and does not require replacement. However, according to ZF, the manufacture of BMW gearbox recommends replacing auto transmission fluid depending on individual driving styles. For example, some drive at high speeds or sport driving. ZF, therefore, recommends a transmission oil change every 100,000 km or after 8 years at the latest. It’s a dilemma as to whom we should follow! We hope you will enjoy viewing the following pictures.
In this case, we discovered a worn-out auto transmission cooler which leads to contamination of coolant and auto transmission fluid. If this issue had been left unnoticed for a longer period of time, the gearbox overhaul would have been inevitable.
Preventive maintenance is always better than repair. It is important to understand about wear and tear before the components break down totally. If you have any issue in any part of your car, do feel free to contact us. We will always serve you with the best of your interest! Thanks for reading!
