If your BMW signals a drivetrain malfunction, it’s always best to address this issue as soon as possible. The drivetrain is responsible for transmitting power from the engine to the wheels, ensuring efficient vehicle operation. Essentially, a drivetrain malfunction is very similar to a check engine light illuminating in a BMW. Let’s take a look at what causes drivetrain malfunctions and what can be done to fix this issue.
How To Find A Drivetrain Malfunction
The first step toward addressing this issue is undergoing a diagnostic test. This process will involve a technician utilizing specialized tools to read any error codes from the BMW’s computer system.
The initial investment is essential toward accurately identifying the issue and forming a proper repair strategy.
What Causes BMW Drivetrain Malfunctions?
Your BMW’s drivetrain is its power channel, moving energy from the engine to the wheels. A few of the common issues are detailed below.
Clogged Catalytic Converter
The catalytic converter is in place to reduce harmful emissions by converting exhaust gas into less harmful substances. When the converter gets clogged, it can result in poor engine performance. The reduced power output can indirectly impact the drivetrain.
Low-Quality Fuel
Poor or contaminated fuel can result in problems like engine misfires and knocking. This can lead to a decrease in the engine’s overall efficiency.
Bad Fuel Injectors
Fuel injectors are necessary for the delivery of fuel into the engine’s cylinders. If the injectors become clogged, the engine’s fuel-air mixture can become quite imbalanced. This ultimately affects power delivery and can potentially trigger a drivetrain warning.
Failed Ignition Coils
These are in place to boost the spark plugs, so if they fail, your BMW will not be going anywhere fast.
Fouled Spark Plugs
Fouled spark plugs can result in engine misfires.
Fuel Pump Malfunctioning
If the fuel pump fails, the engine will not receive the fuel it desperately needs. This leads to power loss or possibly a complete shutdown.
How To Fix A Drivetrain Malfunction BMW
Follow this step-by-step guide to fix your BMW’s drivetrain malfunction.
Step 1. Restart The Engine
- Start by turning your engine off.
- Wait for a few minutes before restarting it.
- In some cases, the warning might get triggered by a temporary glitch.
Step 2. Check The Engine
- Check for any obvious issues, such as fluid leaks, disconnected hoses, or loose wires.
- If any of these issues are discovered, take the appropriate actions to address these concerns before moving on in the process.
- At this time, you may have to repair damaged wires, fix fluid leaks, or tighten connections.
Step 3. Utilize Your Scan Tool
- Plug your handy scan tool into the OBD-II port.
- Turn the ignition key to the “ON” position.
- Now locate the “Read Codes” function.
- Use the tool’s manual or online resources to interpret the error codes and what they mean.
Step 4. Address The Problem(s)
- Based on the error codes, you can inspect any components related to the reported issues.
- If the issue is straightforward and you have the necessary experience, you can try to repair the component.
- If the problem seems to be beyond your expertise, it’s best to contact the local auto care professionals.
- They will possess the necessary knowledge and equipment to diagnose and repair any issue.
Step 5. Clear Trouble Codes
- Scroll through the tool’s menu options to find the “Erase Codes” or “Clear Codes” function.
- Now confirm that you wish to clear the codes.
- Once the codes have been cleared, turn off the scan tool and disconnect it from the OBD-II port.
How Much Does Professional BMW Drivetrain Malfunction Repair Cost?
Minor repairs, such as slight adjustments to the electrical system or sensor replacements, can range from $300-$600. Factors impacting the total cost of this repair include the model of BMW, repair type, car age, and labor rates.
Here are the average costs of drivetrain malfunction repairs:
- Lowest cost: $100.
- Average cost: $1,300.
- Highest cost: $2,500.
Contact the experienced team at Tech Plus Automotive if you are experiencing any maintenance issues with your BMW!
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