BMW & MINI FRM Module: A559 Fault Code – The Fault & The Fix

 - Body Control Units
BMW Footwell Control Module FRM

Body Control Units

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A559 – Instrument cluster power supply has been switched off (closed-circuit current cutoff relay) – This is a fault code that can often be seen in BMW and MINI models often occurring when the voltage in the electrical system falls below a certain level, which can lead to problems with the power supply to the instrument cluster.

In which models can the A559 fault code occur? 

The error code A559 can be read in various BMW and Mini models, including:

A559 Fault Code: What does it mean?

The A559 fault code refers to a situation where the power supply to the instrument cluster has been interrupted. This is usually caused by a low voltage in the 30g-f terminal, which is responsible for the power supply to various components within the vehicle, including the dashboard. 

This can occur when the car's battery is not sufficiently charged or when the voltage drops below approximately 12.15 volts. In addition, the error can occur due to malfunctions during coding or reading to he vehicle without a sufficient power supply. It is common for the use of diagnostic equipment to cause an interruption to the power supply. 

Error code A559 refers to a situation where the power supply to the instrument panel has been interrupted. This is usually caused by a voltage that is too low in the 30g-f terminal, which is responsible for the power supply to various components in the vehicle, including the dashboard. This can occur when the car's battery is not sufficiently charged or when the voltage drops below approximately 12.15V.

 - Body Control Units
Mini R55, R56, R57 2006-2014 FRM

Body Control Units

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Possible causes of the fault

The main causes of error code A559 are:

  • Insufficiently charged battery:A battery that is not sufficiently charged can cause the power supply to the instrument panel to be interrupted.
  • Footwell Module (FRM) Issues: The body computer plays a crucial role in managing electrical components in BMWs and MINIs. Defects in this module can lead to faults such as A559.
  • Outdated wiring or relays: Over time, wear and tear in a vehicle's electrical systems can lead to interruptions in the power supply.

A559 Fault Code: What is the fix?

The first step in solving error code A559 is to check the battery. Make sure it is sufficiently charged and in good condition. If the battery is old or defective, replacing it may fix the error.

However, if the error code continues to appear despite a properly functioning battery, the problem may lie deeper, often in the Footwell Module (FRM). This comfort module is responsible for controlling various electronic components. If this module is defective, all kinds of malfunctions can occur, including problems with the instrument panel.

The solution: Remanufacture the FRM module

A permanent solution to this malfunction is to have the footwell module remanufactured. Remanufacturing offers a cost-effective way to restore the module to optimal condition without the high costs of complete replacement. ACTRONICS offers professional repair services for BMW and MINI FRM modules, effectively resolving electrical faults such as the A559 fault code.

Do you have any questions? Our product specialists will be happy to help you!