Description
Rotary contact for airbag and horn. Suitable for PEUGEOT 406, 607 and others.
Product Overview
This rotary contact (clock spring / spiral cable) restores the electrical connection between the steering wheel and vehicle wiring for the airbag and horn. It is a direct-fit spare part commonly searched under code 4112CA and is intended for vehicles in the Peugeot 406 and Peugeot 607 families. Designed for workshops and experienced DIY mechanics, this part ensures reliable signal transmission while allowing free steering wheel rotation.
Benefits
- Maintains continuous electrical contact for Airbag and Horn circuits during steering wheel rotation.
- Improves safety by restoring proper airbag connection and horn function.
- Easy replacement for trained technicians — saves time compared to wiring repairs.
- Search-friendly part number included (4112CA) for quick lookup.
Technical Information
- Manufacturer: Stellantis (Citroën / Peugeot)
- Model: Peugeot 406, Peugeot 607
- Product Codes: 4112CA
- Additional Numbers: NFP
Function and Typical Symptoms
The rotary contact contains a flexible ribbon/spiral cable that preserves electrical continuity between fixed vehicle harnesses and rotating steering wheel components. When the ribbon is damaged or the internal contacts wear out, common symptoms include Airbag warning light on the dashboard, Horn inoperative, or intermittent operation of steering-wheel-mounted controls. These symptoms indicate the contact is compromised and should be replaced to restore safety systems.
Why This Part Fails
Failure is usually caused by mechanical wear of the flexible cable or abrasion of contacts after many full-lock rotations, accidental over-rotation, or contamination/corrosion of connectors. Improper previous installation (misalignment or pinched ribbon) and impact to the steering assembly are also frequent causes.
Installation Recommendations
- Disconnect the negative battery terminal and wait at least 10 minutes before starting work to allow the airbag system to fully discharge.
- Follow the vehicle manufacturer’s procedure to remove the airbag module safely; mark steering wheel position to preserve alignment.
- Remove the steering wheel and trim to access the rotary contact. Carefully unplug all connectors and note their positions.
- Replace the clock spring ensuring it is centered/aligned according to the part marks before final installation — incorrect centering risks cable damage on first full-lock rotation.
- Reassemble in reverse order, tighten the steering wheel to the manufacturer’s specified torque, reconnect the battery, and verify airbag indicator and horn operation.
- If the airbag warning lamp remains illuminated after replacement, perform diagnostic checks with appropriate tools to read fault codes and clear them.
Who Should Fit This Part
Recommended for qualified auto mechanics and experienced DIY enthusiasts familiar with SRS safety procedures. If you are not trained in airbag system work, have the replacement performed by a professional to avoid risk of injury or damage.
Keywords
Clock spring, Spiral Cable, Rotary Contact, Airbag Contact, Horn Contact, Peugeot 406, Peugeot 607, 4112CA
