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S320

Thanks for writing in about the transmission problem with your 1999 Mercedes-Benz S320. Typically the issue you're speaking about is a result of overheating inside of the automatic transmission. The overheating can be caused by dirty transmission fluid (https://www.yourmechanic.com/question/need-to-have-transmission-fluid-flushed-after-i-used-the-wrong-kind), or...

Hi there. What seemed to happen is transmission may have broke a something inside it like a thrust bearing or a drive sun shell. This is common for the transmission to do on normal driving as the vehicle ages. I...

Hello. Most of the time when this issue occurs, it is due to a faulty idle air control valve (https://www.yourmechanic.com/services/idle-control-valve-replacement). This valve is responsible for letting some air from the air cleaner bypass the throttle body so that the engine...

Hi there. An oil leak can be a very frustrating ordeal to go through. There are Many types of oils in your vehicle including, engine oil, power steering fluid, transmission fluid, and also coolant. To ensure proper diagnosis, I would...

Hi there, It sounds like you may have a faulty idle air control valve or potentially a faulty MAP sensor. The IAC valve is activated when the car is warm and helps the engine cope with loads on it during...

It sounds as though the locking pawl is jammed in position. Sometimes that can happen if there is a side force on the steering when the lock is engaged. If the car is parked against a curb, or if the...

Hello Without having a good impression of the actual symptoms you are experiencing, it would be difficult to tell you the exact problem. I would recommend having your transmission fluid level and condition checked first. Then, if the fluid level...

A knocking sound in the engine generally means that the bearings in the engine are worn. When the bearings are worn, this allows the parts of the engine to have excess movement, causing the knocking noise. I would ask for...