Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the computer in your car that helps with stability and traction is having trouble reading its memory. It's like when your computer can't find a file it needs to work properly.
The Dynamic Stability Control (DSC) module is experiencing an issue accessing its memory, which is necessary for proper vehicle stability control.
The C1089 code indicates a problem within the DSC control module, specifically with the FlexRay controller's ability to access its memory. FlexRay is a communication protocol used in vehicles for fast and reliable data exchange. A memory access error suggests that the module cannot retrieve or store data correctly, which can affect vehicle stability functions.
• Stability control warning light on
• Traction control system malfunction
• Possible loss of vehicle stability features
• Faulty DSC control module
• Corrupted software or firmware
• Electrical issues such as wiring or connector problems
DSC: Dynamic Stability Control
FlexRay: A high-speed communication protocol used in automotive applications
• Perform a diagnostic scan to confirm the C1089 code.
• Inspect the DSC control module and related wiring for damage or corrosion.
• Check for software updates or reprogramming needs for the DSC module.
• Replace or repair faulty wiring or connectors.
• Reprogram or update the DSC module software.
• Replace the DSC control module if necessary.
• OBD-II scanner
• Multimeter
• Diagnostic software tool
$300 - $800
Moderate
• BMW 3 Series
• BMW 5 Series
• BMW X5
• Regularly update vehicle software.
• Ensure proper maintenance of electrical systems.
• Avoid moisture exposure to electronic components.
Control Module Communication
• Avoid driving aggressively until the issue is resolved.
• Consult a professional mechanic for diagnosis and repair.
Check with the vehicle manufacturer for warranty coverage on electronic control modules.
This code has been more prevalent in vehicles with advanced electronic stability systems, especially in models using FlexRay communication.
Moderate – This issue affects vehicle stability functions and should be addressed promptly to ensure safe driving.
Driving with a malfunctioning stability control system can increase the risk of accidents. Address this issue as soon as possible.
• Vehicle parked on a level surface
• Ignition in the ON position
The DSC control module is typically located under the dashboard or in the engine bay, depending on the vehicle model.
Q: Can I drive my car with this code?
A: It's not recommended to drive with this code active, as it affects the vehicle's stability control system.
Q: Will disconnecting the battery clear this code?
A: Disconnecting the battery may temporarily clear the code, but it will not fix the underlying issue.
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