What Causes Severe Jerking in Mercedes-Benz 9-Speed Transmission?
1 Answers
Severe jerking in Mercedes-Benz 9-speed transmissions can be attributed to the following reasons: Persistent internal contamination: Transmission jerking often occurs not due to valve body damage, but rather from stubborn internal dirt and impurities. When these contaminants accumulate within the valve body, they can form blockages that prevent effective oil pressure regulation, leading to jerking, impact, and slippage issues. Transmission overheating: Overheating is another critical factor, accounting for over 90% of automatic transmission failures. High temperatures degrade transmission fluid quality and friction characteristics, increasing wear and generating noise. Additionally, sludge (impurities or contaminants) forms inside the transmission (e.g., in the valve body), causing jerking and harsh shifting.