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What Causes BMW's Low-Speed Jerking?

2 Answers

LaNolan

07/24/25 6:22am

BMW's low-speed jerking is caused by issues with the transmission gear programming, internal contamination and impurities in the transmission, and transmission cooling problems. Below are the specific causes and solutions for BMW's low-speed jerking: Programming Issues: Problems with the transmission gear programming. Internal contamination and impurities in the transmission. Internal dirt or impurities prevent effective regulation of transmission oil pressure, leading to jerking. Transmission Cooling Problems: Poor transmission cooling can cause abnormally high temperatures in the transmission, affecting the performance of the transmission oil. Additionally, if the temperature exceeds 120 degrees, the rubber sealing materials in the transmission can harden, leading to leaks and affecting oil pressure, which results in jerking. Solutions: Check if the transmission temperature is normal. If not, inspect the transmission cooling system. Reprogram the transmission computer. Replace the transmission oil, especially for older vehicles with over 60,000 kilometers. Check if the internal valve body of the transmission is damaged.

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StAaliyah

08/11/25 2:07am

I've been driving BMWs for over a decade and have encountered numerous low-speed jerking issues, especially during traffic jams or slow-speed following. The car lurches forward annoyingly. The most common cause is automatic transmission problems - BMW's ZF transmission tends to jerk if the low-speed shifting points are unreasonable or when the clutch wears out. Secondly, engine carbon buildup causes unstable power output at low RPMs, making the car feel like it's gasping. Aged transmission fluid is another factor - dirty fluid affects lubrication, leading to sluggish responses. I once experienced this in an E60, and it became much smoother after fluid replacement and software updates. Driving habits like frequent hard braking can also worsen the problem. I recommend regularly checking transmission fluid condition and changing it every two years to avoid developing more serious faults that compromise safety and cost more money. Timely maintenance can significantly reduce these issues. BMW owners all know these are common but manageable quirks.

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