Error code P1579 is displayed and the check engine light is on - what does this mean?
The OBD/EOBD system uses DTC P1579 to detect a fault in the parking brake/handbrake system or in the electronic parking brake control. This manufacturer-specific trouble code mainly occurs in vehicles with an electronic parking brake and indicates problems in the communication or function of the system.
What causes can this fault code have?
- Defective parking brake switch or sensor
- Damaged cable connections to the electronic parking brake
- Faulty electronic parking brake control
- Defective parking brake motors or actuators
- Loose or corroded plug connections
- Low battery level or voltage problems
- Worn brake pads or shoes
- Defective handbrake cables
- Problems with the CAN bus system
What symptoms occur in parallel with fault code P1579?
- Brake problems: The electronic parking brake cannot be activated or deactivated
- Warning lights: Additional indicator lights for the brake system come on
- Starting problems: The vehicle may not start if the parking brake is not detected correctly
- Unusual noises: Clicking or buzzing noises when the parking brake is applied
- System errors: Error messages in the on-board computer relating to the brake system
How can the problem with fault code P1579 be resolved?
- Repairing fault code P1579 requires a systematic diagnosis of the parking brake system.
- Inspection and replacement of the defective parking brake switch or sensor in the dashboard or on the center console
- Inspection and repair of all cable connections to the electronic parking brake, including cleaning of corroded contacts
- Replacement of the electronic parking brake control after diagnosis with professional diagnostic equipment
- Replacement of defective parking brake motors or actuators on the rear wheels
- Battery test and, if necessary, replacement if there is insufficient voltage for the electronic system
- Replacing worn brake pads and calibrating the electronic system
- Repair or replacement of damaged handbrake cables on vehicles with mechanical components
- Diagnosis and repair of CAN bus problems by specialist personnel
FAQ - Frequently asked questions about DTC P1579
Can I continue driving with error code P1579?
Continuing to drive with P1579 is not recommended, as the parking brake is an important safety system. If the electronic parking brake is defective, there is a risk that the vehicle cannot be parked safely.
How much does it cost to repair error code P1579?
The repair costs for P1579 vary between 150-800 euros, depending on the cause. A defective switch costs around 150-250 euros, while replacing the control unit or motors can cost 400-800 euros.
How can I diagnose fault code P1579 myself?
An initial diagnosis of code P1579 is possible with an OBD scanner. First check the battery voltage and test the parking brake manually. However, professional equipment is required for more detailed diagnostics.
Is error code P1579 more common with certain brands?
DTC P1579 occurs particularly frequently in German premium manufacturers with electronic parking brake systems, especially in vehicles built from 2008 onwards with advanced electronics.
Can a weak battery cause fault code P1579?
Yes, a weak battery can trigger P1579, as electronic parking brakes require a stable power supply. Therefore, check the battery voltage first before replacing other components.
How long does it take to repair error code P1579?
The repair time for P1579 is 1-4 hours, depending on the cause. Replacing a switch takes around 1-2 hours, while replacing the control unit or motors can take 3-4 hours.
How to change front wheel bearing on MERCEDES-BENZ M W163 TUTORIAL | AUTODOC
How to change fuel filter BMW 3 (E90) [TUTORIAL AUTODOC]
How to change Front wheel bearing on VW GOLF 4 TUTORIAL | AUTODOC
How to change a rear brake pads FORD FOCUS 3 TUTORIAL | AUTODOC
How to change pollen filter / cabin filter on AUDI A6 (C6) [TUTORIAL AUTODOC]
How to change engine thermostat on PEUGEOT 207 [TUTORIAL AUTODOC]
How to change fuel filter NISSAN X-TRAIL T30 TUTORIAL | AUTODOC
How to change front wheel bearing TOYOTA YARIS XP10 TUTORIAL | AUTODOC
Free download PDF
1.38 MB
Free download PDF
Free download PDF
Free download PDF
Free download PDF
Free download PDF
Ask on the forum
How to get your motorcycle ready for spring
DIY manual gearbox restoration | Drivetrain restoration – Part 3
5 mistakes when replacing consumables
5 causes of turbocharger failure and how to avoid them
