BMW DTC P0579 – Cruise Control Multi-Function Input ‘A’ Circuit Range/Performance
DTC P0579 meaning on BMW
DTC P0579 refers to the Cruise Control Multi-Function Input ‘A’ Circuit Range/Performance. This diagnostic trouble code indicates that there is an issue with the cruise control multi-function input circuit on a BMW vehicle. The ‘A’ circuit typically refers to a specific input or sensor related to the cruise control system.
BMW DTC P0579 symptoms
Symptoms of DTC P0579 on a BMW may include:
- Malfunctioning cruise control system
- Cruise control not engaging or disengaging properly
- Check Engine Light (CEL) illuminated on the dashboard
BMW DTC P0579 causes
Common causes of DTC P0579 on a BMW include:
- Faulty cruise control switch
- Wiring issues in the cruise control circuit
- Defective cruise control module
BMW DTC P0579 seriousness
While DTC P0579 may not cause immediate safety concerns, it can affect the functionality of the cruise control system on the BMW. It is recommended to address this issue to ensure proper operation of the cruise control feature.
How to diagnose DTC P0579 on BMW
To diagnose DTC P0579 on a BMW, you can follow these steps:
- Use a diagnostic scanner to retrieve the fault codes from the vehicle’s computer.
- Inspect the cruise control switch and wiring for any visible damage or corrosion.
- Test the cruise control module for proper functionality.
How to fix DTC P0579 on BMW
To fix DTC P0579 on a BMW, you can try the following:
- Replace the faulty cruise control switch if necessary.
- Repair any damaged wiring in the cruise control circuit.
- If the cruise control module is defective, consider replacing it with a new one.
How to erase DTC P0579 on BMW
To erase DTC P0579 on a BMW, you can clear the fault codes using a diagnostic scanner. After addressing the underlying issue causing the fault code, you can reset the codes to turn off the Check Engine Light and ensure that the cruise control system operates correctly.
Recommended tools & DTC Scanners for BMW
Best Diagnostic App for modern BMWs: BimmerLink
Recommended Bluetooth adapter for Bimmerlink: OBDLink CX
Cable adapter for Bimmerlink: Enet Cable USB Type C
For older BMWs we recommend: Autel AutoLink AL319 (2024 version)
Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter
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