005F62

What 005F62 Means

Code 005F62 points to the Aktivlenkung (active steering) system on BMW E60 cars. It flags a fault tied to the engine position angle (Motolagewinkel), which the system uses to run active steering correctly.

Aktivlenkung includes an electro-hydraulic pump, steering angle sensors, and a control module that varies steering effort with vehicle speed. To work right, the module needs the current engine position (crankshaft angle or an equivalent value). If that angle isn't calibrated or the data is wrong, the system shuts down and a warning lamp lights on the instrument cluster.

After you reset the control module and re-set the engine position angle through INPA, the system works for a while, but the fault comes back about 5 minutes after the car is shut off. That means the calibration isn't being saved, the module's non-volatile memory is failing, or a sensor is sending bad data once the ignition is off.

Symptoms

• Aktivlenkung deaktiviert — the active steering system shuts down.
• Gelbe Lampe leuchtet — a yellow warning lamp lights on the instrument cluster.
• Fehlermeldung “Aktivlenkung deaktiviert” — an error message appears on the display.
• After a reset and calibration, the fault returns about 5 minutes after the car is shut off.
• Between calibration and the fault's return, the system works normally.

Diagnosis and Repair

Step 1: Reset the Control Module

• Reset the Aktivlenkung control module with INPA (STEUERGERÄT rückgesetzt mit INPA).

Step 2: Set the Engine Position Angle

• Re-set the engine position angle with INPA (Motolagewinkel neu eingestellt mit INPA).
• After this procedure the system returns to normal and works.

Step 3: Check That the Calibration Is Saved

• Since the fault returns ~5 minutes after the car is shut off, check whether the adaptations are being stored in the control module's non-volatile memory.
• Check the control module's power supply: make sure voltage doesn't drop when the ignition is off, and look for problems with the terminals or fuses.
• Check the condition of the connectors and wiring to the Aktivlenkung control module.

Step 4: Diagnose the Sensors

• Check the steering angle sensor and the engine position sensor (if applicable) for correct signals.
• Use ISTA to analyze live parameters and spot inconsistencies.

Step 5: Check the Control Module

• If the calibration isn't saved, the Aktivlenkung control module itself may be faulty (internal memory or software).
• Consider reflashing or replacing the module.

Note: The source data doesn't state a final fix; the fault returns after ~5 minutes. Further in-depth diagnosis is needed.