Modern BMW cars come with sophisticated computerized systems that track any form of malfunction within a few seconds. Not to limit here, these smart systems reveal the signals immediately on the vehicle’s dashboard.
One commonly displayed issue is the drivetrain malfunction. It is an indication of a problem that can be costly to repair if not taken as a matter of urgency.
A drivetrain malfunction in BMW does not result in the car’s breakdown automatically. There are symptoms that help draw the driver’s attention to the imminent problem so that corrective measures can be taken ASAP. So, what does drivetrain malfunction mean?
What Is a Drivetrain Malfunction in BMW?
A drivetrain malfunction in a BMW or any vehicle indicates a problem with the components that deliver power from the engine to the wheels. This complex system includes the engine, transmission, driveshafts, differentials, and axles.
When there’s a problem with any part of this system, it can affect how your car drives. Usually, the car’s computer will spot this issue and let you know by turning on a warning light or sending a drive train malfunction message on the BMW’s dashboard.
This alert prompts the driver to seek diagnostic services and repairs to prevent further damage to the vehicle.
Components of a BMW Drivetrain
The BMW drivetrain comprises several critical components: the transmission, driveshaft, differential, and axles. Each element is indispensable for smooth and efficient power delivery to the wheels.
- Transmission: Regulates the gear ratio to optimize power and efficiency.
- Driveshaft: Transfers power from the transmission to the differential.
- Differential: Divides power between the wheels on an axle, facilitating smooth cornering.
- Axles: Transfers power from the differential to the wheels.
How the Drivetrain Functions in Different BMW Series
BMW’s drivetrain technology is available in various configurations across its model range, mainly through rear-wheel drive (RWD) and all-wheel drive (xDrive) systems.
Rear-Wheel Drive Systems
RWD systems are prevalent in many BMW models, offering a dynamic driving experience by directing power to the rear wheels. This setup is celebrated for its handling and driving excitement.
All-Wheel Drive (xDrive) Systems
The xDrive system, BMW’s all-wheel drive technology, improves traction and stability by distributing power between the front and rear axles. This is notably advantageous in adverse driving conditions, such as snow or rain.
Grasping these systems is essential for appreciating the engineering behind BMW vehicles and for diagnosing drivetrain malfunctions.
Symptoms of Malfunctioning Drivetrain
A BMW drivetrain malfunction does not suddenly cause the car to break down. If this occurs, there would be no need for the car’s computerized systems designed to update the driver about any recent developments in the car’s operations system.
So, there are a number of symptoms that herald a drivetrain malfunction to serve as warning signs to the driver or the car owner.
And they take necessary and immediate measures to rectify any problem that the ECU has detected. Some of the symptoms of a drivetrain malfunction include:
- Check engine (CE) light display
- iDrive screen displays a drivetrain error message
- Rough idling
- Constant vibration
- The engine cuts off when the gear is engaged.
- The transmission gets stuck in the gear
- The car stops and won’t start
What Causes Drivetrain Malfunctions?
The BMW drivetrain goes bad due to one or more of the below-given causes:
- Bad Spark Plug
- Low-Quality Fuel
- Faulty Fuel Pump
- Damaged Fuel Injectors
- Bad Catalytic Converter
- Bad Ignition Coils
#1. Bad Spark Plug.
The damaged or failed spark plug is one of the major causes of the BMW drivetrain malfunction.
You may face misfiring issues due to failed or damaged spark plugs. These misfires occur due to the low or insufficient spark caused by faulty spark plugs.
This difficulty while starting the engine may lead to the drivetrain malfunction indication.
#2. Low-Quality Fuel.
Contaminated or low-quality fuel is a major cause of drivetrain malfunction. You should always check your fuel after a specific time interval. If it is contaminated, you should change it as soon as possible.
It is always recommended to use 93-octane fuel to avoid drivetrain malfunctions in expensive cars like BMW.
#3. Faulty Fuel Pump.
If your car shows a drivetrain malfunction error during acceleration, a high-pressure fuel pump may be damaged.
Fuel in the car is transferred from the tank to the engine through the fuel pump. This transfer is done by the pressure caused by compressing the fuel in the fuel lines.
A damaged fuel pump doesn’t properly supply fuel to the combustion chamber, resulting in low performance and reduced power.
With this insufficient power production, the drivetrain malfunction error will cause the drivetrain malfunction light to appear on the dashboard of your car.
#4. Damaged Fuel Injectors.
The main function of the fuel injectors is to inject fuel into the combustion chambers. The faulty fuel injectors can’t efficiently inject the fuel into the combustion chamber, resulting in bad combustion and poor engine power.
A faulty fuel injector may also cause misfiring, engine stalling, vibration, and rough idling in your BMW. All of these are causes of the BMW drivetrain malfunction.
A failed turbo, a damaged head gasket, a bad MAF sensor, or low fuel quality can also cause some disastrous situations that lead to drivetrain malfunctions.
#5. Bad Catalytic Converter.
The catalytic converter is used to convert the highly toxic gases emitted from the internal combustion engine into less-toxic pollutants by catalyzing a redox reaction.
The catalytic converter converts highly toxic gases (like nitrous oxide and carbon monoxide) into carbon dioxide and water vapor.
In the case of a faulty catalytic converter, little gas will be emitted from the exhaust, making the internal pressure higher than usual. This increase in pressure causes the drivetrain malfunction error in your BMW.
#6. Bad Ignition Coils.
The spark plugs of your BMW get power from the ignition coils. So, if the coils are damaged, the power will not be delivered to the plugs, and not enough spark will be produced.
If your spark plugs don’t produce a sufficient spark, your engine cylinder may start misfiring, and you will see a clear reduction in the engine power.
How Do I Diagnose The Correct Cause Of a BMW Drivetrain Malfunction?
Diagnosing problems with a BMW drivetrain can be tricky and might need special tools and expertise. Here are some steps to help figure out what’s wrong:
- Check Warning Lights: Look at the dashboard for any lights that indicate BMW drivetrain issues and write down any error codes.
- Listen for Noises: Be aware of any unusual sounds like clunking, grinding, or whining coming from the drivetrain.
- Feel for Vibrations: Notice any vibrations while speeding up, as these could suggest problems with the driveshaft or CV joints.
- Inspect Fluid Levels: Check the fluid levels in the transmission, transfer case, and differential to avoid BMW drivetrain issues.
- Visual Inspection: Check for any leaks, damage, or wear on the drivetrain parts.
- Use an OBD-II Scanner: Connect a scanner to your BMW’s onboard diagnostics port to read fault codes. These codes can offer the first clues toward identifying the BMW drivetrain malfunction.
- Software Diagnostics: The problem could lie within the vehicle’s software, necessitating specialized diagnostic tools to correct or update BMW drivetrain malfunction software.
- Professional Inspection: A professional mechanic specializing in BMW Transmission Repair can provide a more thorough diagnosis. They can interpret the codes accurately and inspect physical components for damage or wear.
How To Fix The BMW Drivetrain Malfunction Message?
To fix the BMW drivetrain malfunction message, you need to read the error codes from the engine and transmission control modules with an OBD2 scanner to determine what is causing the problem.
You can also try restarting the engine and inspecting the engine quickly.
Here is a more detailed list of how to fix the BMW drivetrain malfunction warning message:
#1. Restart Motor.
When the error first pops up on the dash, you want to pull over safely to the side of the road. It’s best to turn the engine off and let it sit for a moment. There’s always the chance that the message is just a fluke. After five to ten minutes of resting, restart the engine.
However, you want to skip this step if the car message comes on and the drivetrain goes into limp mode. In this case, it’s best to simply get the car where it needs to be, because it might not start again once you shut down the engine.
#2. Inspect Engine.
Before you go any further, it’s best to take a quick look at the engine. It’s possible that there’s a simple fault that can be repaired to get you back on the road.
For example, there might be an oil or transmission fluid leak that needs to be repaired. If you notice anything obvious, you’ll have a better idea of what needs to happen next.
#3. Scan Codes.
If there’s no visible reason for the warning message, it’s time to use your code-scanning tool. Make sure your scan tool is compatible with your BMW vehicle before proceeding.
With most BMW vehicles, the DME (digital motor electronic) is responsible for storing codes coming out of the engine, while the EGS (electronic gearbox) or AGS (adaptive gearbox) sends out the codes from the transmission. You will need to scan both modules to get all of the error codes.
Here’s what the steps look like to get the codes.
- Find the OBD II port in your BMW. It’s usually located below the dashboard on the driver’s side.
- Plug your code scanner into the port.
- Turn the key in the ignition to the On position. Do not start the engine.
- Select the appropriate vehicle model and specs in your scanner.
- Read all of the DTCs coming from the DME and the EGS/AGS modules.
Make a note of the trouble codes so you know what you are dealing with. If you aren’t able to get the codes because you don’t have a compatible scanner, you will need to move on to visit a mechanic. You don’t want to guess what the problem is.
#4. Repair Faults.
With the codes in hand, you should have a better idea about what should be fixed. You might be able to perform some of the more basic repairs yourself. The cost will vary based on what needs to be repaired and whether you need help from a professional.
As an example, changing the spark plugs might cost you $100 or less, especially if you can do it yourself. On the other hand, replacing the catalytic converter could run $950 to $2,500, even if you don’t need a professional’s help.
You should also look for technical service bulletins, because many BMW models have bulletins about the drivetrain malfunction issue.
#5. Get Help from a Mechanic.
If the job seems to be too complicated at any stage in the diagnosis or repair, it’s time to get help from a professional. You may need to find a specialized BMW mechanic, as these luxury cars aren’t meant to be worked on by just anyone.
Not only should a specialized scanner be used, but some of the repairs go beyond what’s ordinary. You will pay more to visit a BMW mechanic, but the guarantee you get is enough to provide peace of mind.
Importance of Addressing a Drivetrain Malfunction
Ignoring a drivetrain malfunction can lead to serious consequences, making it essential to address any issues promptly. Here’s why:
- Reduced safety: A malfunctioning drivetrain can compromise your vehicle’s control, increasing the risk of accidents.
- Increased repair costs: Delaying repairs can lead to more extensive damage, resulting in higher repair costs.
- Decreased performance: A faulty drivetrain can reduce your vehicle’s power and overall performance, affecting your driving experience.
- Increased risk of breakdowns: A drivetrain malfunction can cause your vehicle to break down unexpectedly, leaving you stranded and in need of a tow truck.
Preventive Measures and Maintenance
Regular maintenance and preventive measures are key to ensuring the longevity of your vehicle’s drivetrain system and avoiding costly repairs. Here are some recommended practices:
- Regular oil changes and fluid checks: Keeping your vehicle’s fluids at optimal levels is essential for smooth operation.
- Transmission fluid flushes and filter replacements: Regularly flushing the transmission fluid and replacing filters can prevent buildup and ensure efficient performance.
- Spark plug replacements: Faulty spark plugs can affect the drivetrain, so replacing them as needed is important.
- Belt and hose replacements: Worn-out belts and hoses can lead to drivetrain issues, so regular inspections and replacements are necessary.
- Tire rotations and balancing: Properly balanced and rotated tires contribute to the overall health of the drivetrain system.
- Brake pad replacements: Ensuring your brake pads are in good condition can prevent additional strain on the drivetrain.
- Regular inspections and tune-ups: Routine check-ups by a professional can catch potential issues before they become major problems.
By following these preventive measures, you can help maintain your vehicle’s drivetrain system and avoid unexpected malfunctions.
When Should You Seek Professional BMW Drivetrain Repair?
DIYers can perform simpler repairs like sensors and solenoids. But complex transmission repairs often require a professional. Seek out a qualified BMW specialist for drivetrain issues in these cases:
- If your own troubleshooting cannot diagnose or resolve the fault.
- For internal transmission repairs or clutch replacements/adjustments. Proper tools and setups are required.
- If the malfunction causes unsafe driving conditions like loss of power or stalling. Don’t endanger yourself.
- To prevent further drivetrain damage. Delaying extensive repairs often makes problems worse.
- For differential or driveshaft repairs requiring component removal/replacement.
While costs may be higher at a professional shop, their diagnostic expertise can precisely pinpoint the issue to prevent throwing parts at the problem. The job is also done right the first time.
What Does It Cost To Repair A Drivetrain Malfunction?
Repair costs for a BMW drivetrain malfunction vary widely based on factors like:
- Model, year and transmission type
- Whether it’s an electrical fault or internal mechanical damage
- If rebuilding or replacing the transmission is needed
- BMW dealership vs independent shop rates
However, here are some typical repair cost ranges:
- Sensor replacements – Faulty temperature, pressure, speed sensors or switches can be replaced individually for $150 – $350, avoiding a higher transmission rebuild cost.
- Solenoid replacement – Sticking shift solenoids in automatic transmissions are replaced for $350 – $850.
- Clutch repairs – Replacing worn clutch discs and seals averages $1,000 – $1,500 for parts and labor.
- Driveshaft components – Center support bearings, U-joints and driveshaft replacements range from $500 – $900.
- Differential repairs – Seals, bearings and gear replacements or rebuild kits cost $1,200 – $1,800.
- Transmission control module – Repairing or replacing electronic TCM issues averages $1,000 – $1,500.
- Transmission rebuild/replacement – For extensive mechanical damage like worn gears, BMW dealership prices often run $5,000 – $8,000. Independent shops average $3,500 – $6,000.
In general, fixing minor issues like sensors and solenoids costs between $350 – $850 while major repairs like rebuilding differentials and transmissions run $1,200 – $6,000.
Warranty
The coverage of drivetrain malfunctions may differ depending on the BMW model and year.
The New Vehicle Limited Warranty covers any defects in material or workmanship for the duration of the warranty, while the Powertrain Warranty also covers issues with the engine, transmission, and drivetrain.
It’s essential to familiarize yourself with the specifics of your BMW’s warranty to understand what is covered and what is not in case of a drivetrain malfunction.
FAQs.
Q: Can I drive a BMW with a drivetrain malfunction?
A car’s drivetrain malfunction is quite problematic and must not be taken lightly or with levity. Therefore, it is a no-no! Never try to drive your BMW with a drivetrain malfunction.
In fact, the engine of a vehicle generates power and transmits such power through the drivetrain to the vehicle’s wheel to enable it to move.
In that case, when your BMW’s drivetrain malfunctions, it will be practically impossible for the engine power to reach the wheels.
So, if you perceive that your BMW’s drivetrain is defective, contact your dealer immediately or a professional auto mechanic to check it out and fix the problem.
Q: How much does it cost to fix the drivetrain malfunction in BMW?
If you own a BMW 328i and you are experiencing a drivetrain problem, the cost of fixing the problem is relatively inexpensive. Drivetrain malfunction on BMW328i can be fixed with an estimated cost of $2,068 to $2,108.
Parts cost is estimated at around $1,913, while labor cost is about $155 to $195. BMW drivetrain malfunction repair cost is relatively cheaper than fixing both the drivetrain problem and any other issues that come along with neglecting the drivetrain for too long.
Problems are always cheaper to resolve initially than when they have escalated. So, it would be best to fix a vehicle’s malfunctioning drivetrain immediately after the problem is identified.
Q: What does it mean when the drivetrain light comes on?
Drivetrain light display is common with automatic transmission cars (and not applicable to vehicles with manual transmission).
When the drivetrain light illuminates on the dashboard, it is a sign that the car’s computerized system has detected a problem in the car’s transaxle or automatic transmission.
If you suddenly see your BMW X3 dashboard drivetrain light illuminates, it is crucial to take the issue as a matter of emergency.
Drivetrain malfunction on BMW X3 can be costly to repair if a symptom such as a drivetrain light illumination is ignored for a long time.
Q: What is the BMW 1 Series drivetrain?
A BMW 1 Series drivetrain is the component that transfers the car’s engine power to the wheels to enable the car to move.
A malfunction in a BMW1 series drivetrain indicates that there is a problem with the vehicle’s automatic transmission or its transaxle. And so the fix requires immediate action.
A drivetrain malfunction is problematic in any car, irrespective of the brand or model. Whether it is a BMW 1 Series or any other car, it is important to pay close attention to symptoms of a defective drivetrain, diagnose the problem and get it fixed immediately.
So, whether it is a drivetrain malfunction on BMW 528i or any other BMW series, take any perceived drivetrain issue with seriousness until you have resolved the issue.
Q: How long does a drivetrain last?
A vehicle’s drivetrain is expected to last around 1,500 to 3,000 miles. However, the expected lifespan of a car’s drivetrain depends on the driver’s driving and maintenance style.
A careful driving style coupled with regular maintenance of the drivetrain will prolong the lifespan of the part.
On the other hand, a reckless driving style with a random maintenance style cannot guarantee the possibility of a car’s drivetrain reaching its expected lifespan.
So, it is vital to subscribe to a careful driving style, as well as regular maintenance for your car and all its components.
Final Words
A drivetrain malfunction on BMW can be very frustrating if you do not know the cause and how to fix the problem. On the contrary, you now know what to do if a similar challenge occurs to your BMW car.
If you have someone battling with this same problem at the moment, why not refer them to read this article? I assure you, it would be a lifesaver for that fellow.
For those experiencing a drivetrain malfunction, endeavor to contact an expert auto mechanic immediately if you can’t fix the problem yourself.