Mercedes Transmission Repair


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Mercedes-Benz is one of the most prominent names in the automobile industry. The global giant has a long legacy is in making commercial as well as heavy-duty vehicles. The passenger car manufacturing division of Mercedes-Benz sold 2.4 million cars in 2019 and continues to sell multi-million amounts of vehicles this year. But like any other vehicle, there are also some unavoidable Mercedes-Benz transmission problems. However, if taken care of in time, this problem will not ruin the engineering of your car.

Most Common Mercedes Transmission Problems

This article will give you the knowledge of the most common Mercedes transmission problems and on how to fix them. You can easily follow through the troubleshooting guide which will help you identify the problem correctly and give you the knowledge of fixing it.

The first step to fix any transmission problem in any of your vehicles is to stop panicking. This is a common problem with vehicles and can easily be tackled with if you are in the right frame of mind.

It is important to note that these problems can arise at any time. Whether your vehicle is parked or while you are the road. In case you are far away from home and the transmission is stuck in the gear, follow these steps:

  • Pullover your car on the side of the road and turn it off by removing the key.
  • Make sure you do not press the ignition or any other buttons in your car.
  • Keep the car switched off for 20-50 seconds.
  • Now start the car and drive slowly to see if the transmission is out of the limp mode and if the gearbox linkage problems are resolved.

Even if your vehicle works fine after this process, perpetual transmission clunking hints an underlying issue with your vehicle. This is why it becomes important to address this issue as and when it arises. Before you begin fixing, you need to know what are the reasons You need to find the reason why your transmission is going into limp mode.

toronto transmission rebuild

Clunking in Limp Mode

Clunking in limp mode while on the move is one of the most common Mercedes e320 transmission problems. This is because it is one of the earliest models. With time, your vehicle’s transmission system weakens. This is true for a brand like Mercedes-Benz as well. Given that older car means weakened transmission system, Mercedes C240 transmission problems have also been very common.

transmission gear

No matter how new or old your car is, it is important to address these problems right on time rather than ignoring it or moving it to a later date. This can further deteriorate the engineering of your car. To diagnose transmission problems is the first step to treating them.

It is important to know that most of possible transmissions problems such as hard shifting and no shifting issues are caused by problems in transmission fluid level or problem in the transmission pin connector plug or the O-Ring. While you can fix these issues on your own, you must consult a mechanic for proper Mercedes transmission troubleshooting. Based on the condition of your car, you might also be recommended transmission replacement. However, given the quality of transmission, complete is replacement is rarely needed. To ensure that your Mercedes automatic transmission works fine, you might require the replacement of only some specific parts of the system.

Transmission Problems that You Need to Know

Following are the most common transmission problems that you need to know of:

  • The transmission fluid level can go low. The transmission fluid is prone to leakage which can cause automatic transmission problems especially in the gearbox of your car.
  • There can be a leak or contamination in the O-ring connector oil.
  • Excess heat in the clutch packs is a common problem causing further transmission problems. The clutch packs surround the gearbox and may also cause problems in Mercedes shifting.
  • There can be a dent or defect in the valve body or connector plate.
  • There can be a defective or damaged brake light switch that may cause the vehicle to be stuck and park gear.
  • It is also common for the shifter module to be defective or get damaged.
  • Damaged torque convertors can also lead to transmission problems. The needle bearings in the torque convertor are prone to failure which may cause a metal collision and subsequent transmission problems.
  • Mercedes-Benz may also require automatic transmission troubleshooting in cases of solenoid problems. The solenoid is responsible for the proper movement of valves within the valve body. Excess heat can cause these solenoid wires to melt and cause transmission problems.

Now that you know the common things that can go wrong with your Mercedes-Benz transmission, you should also know how to fix them when needed.

mercedes transmission replacement

Here Are Some Ways for Troubleshooting Transmission Problems :

Transmission oil change

1. Keep a Check on Fluid Levels

This is indeed the most common problem with a quick and inexpensive fix. You need to ensure that your Mercedes-Benz transmission fluid is not low. It is common for old vehicles to have lower transmission fluid levels which is why it becomes important for them to keep a check on a regular basis. In case of low transmission fluid, the car goes into limp mode. To check the fluid levels, you require a dipstick.

transmission oil check - mercedes transmission repair

2. Transmission Fluid Colour

The transmission fluid colour should always be pink in colour. If it has turned brown, this reflects a problem with the quality of your transmission fluid. If it gives out a burning order, it means that it is time to change your transmission liquid.

Check on Transmission Fluid Fault Codes

3. Keep a Check on Transmission Fluid Fault Codes 

Mercedes-Benz is a driver-friendly car. The car has a strong fault indication system. Whether it is a case of Mercedes-Benz sprinter transmission or any other transmission problem, there is a fault code indicator in your car’s computer that indicates what the problem actually is. All you have to do is keep an eye and clear the codes. There are some codes specific to TCU (Transmission Control Unit) while some are generic codes stored in the ECU (Engine Control Unit). These codes can be easily retrieved by an OBD-2 scanner.

Mercedes car is over heating and smoking - transmission service

4. Keep a check on overheating

An overheated car means the transmission system is damaged. While usually, the problem is with the transmission fluid liquid, it is also common for valve body damage or torque convertor damage to cause the car to overheat.

If your Mercedes-Benz transmission problems persist, be safe and call a technician.

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