Introduction
BMWs, known for their powerful engines and excellent handling, have some owners reporting a “drivetrain malfunction” message on their dashboard. This alerts drivers to potentially serious issues, but does not always indicate a breakdown. Information on the repair cost is available BMW uses self-monitoring technology to record malfunctions and notify drivers, involving axles, driveshafts, transmission, differentials, and transfer cases. This system can also be used for powertrain-related issues.
Reasons
Drivetrain malfunction messages can be caused by various issues, including faulty spark plugs, fuel injectors, ignition coils, high-pressure fuel pumps, poor fuel quality, and clogged catalytic converters.
How to correct
To prevent drivetrain malfunction warnings from remaining errors, additional warnings or fault codes can be used to diagnose the underlying cause and take necessary action.
Verify the fluid levels
Low engine fluid levels can cause drivetrain malfunction messages. Check for leaks, vacuum hoses, and positive crankcase ventilation valve failures. Use higher-grade fuel from reputable gas stations to reduce tainted or subpar fuel. Wear spark plugs and misfire codes can cause drivetrain malfunctions. If issues persist, restart the engine after tuning for five to ten minutes.
Cost to fix
The cost of fixing a BMW drivetrain malfunction varies based on the cause and can range from $2500 to $2500. Model-specific costs and recalls should be considered before making repairs, as the same part may cost more on different series.
Estimates of repair costs
Tune up $200-$300
Ignition coil replacement #65-$600
PCV replacement $50-$150
Fuel system clean $120-200$
Cat converters replacement $1500-$3000
Conclusion
BMW 3series and 5series models often have modified drivetrains and powertrain issues, which can be caused by aftermarket components or tuners. The issue is often accompanied by diagnostic trouble codes, and repairs can range from simple gas tank replacements to engine, transmission, and powertrain reprogramming.
