Redundancy Requirements Reshape System Hardware Architecture
Hands-off highway assistance and emergency steering intervention both require the steering system to keep operating after a single component failure, which cannot be achieved with one motor winding and one controller. Systems now carry dual three-phase windings, independent controller channels and redundant torque and position sensing, all certified to the highest automotive safety integrity level. That content adds roughly 35% to system price against a single-channel equivalent of comparable rack force. Certification runs 18 to 24 months and demands documentary evidence that suppliers without functional safety capability cannot produce at all.
Market Impact: Covers 100% of European fleet








