Clock Spring 1057357-00-B9051 5-Pin for Tesla Model S/X 2013-2024 Mercedes CLA C117 2014-2019 – Airbag Spiral Cable
Product Description – Clock Spring 1057357-00-B9051 5-Pin for Tesla Model S/X / Mercedes CLA (C117)
🔍 IMPORTANT – PLEASE READ
This clock spring (airbag spiral cable) is a critical safety component located behind the steering wheel. Its role is to maintain continuous electrical connection for the driver's airbag (SRS), horn, radio controls, and cruise controls as the steering wheel turns . The clock spring is a coil that retracts and expands inside its housing to maintain electrical continuity for all components on the driver's airbag .
⚠️ CRITICAL: This clock spring features a 5-pin connector configuration (for heated steering wheel). Always visually compare the connector shape, pin configuration (5 pins), and appearance with your original part before ordering. For 100% confirmation, please contact us with your VIN .
OEM Cross Reference: This part is available under multiple OEM numbers including 1057357-00-B9051, 1057357-00-B, 105735700B9051 .
Return Policy: This electrical component is not returnable once installed. Please ensure compatibility before purchase.
Direct Fit for Tesla & Mercedes Models
Based on compatibility research, this 5-pin clock spring fits the following vehicles:
| Make | Model | Years | Chassis / Notes |
|---|---|---|---|
| Tesla | Model S | 2013–2024 | EAS/SX/010A, with heated steering wheel, 5-pin configuration |
| Tesla | Model X | 2016–2024 | All trims, with heated steering wheel, 5-pin configuration |
| Mercedes-Benz | CLA-Class C117 | 2014–2019 | C117 chassis, with heated steering wheel, 5-pin configuration |
Technical Specifications
- 🔹 Brand: ROYUAN – Premium aftermarket manufacturer
- 🔹 Function: Clock spring / Airbag spiral cable / Steering roll connector
- 🔹 Pin Configuration: 5-pin (for heated steering wheel models)
- 🔹 Placement on Vehicle: Steering column, behind steering wheel
- 🔹 Material: High-strength copper ribbon, flame-retardant ABS plastic housing
- 🔹 OE Numbers: 1057357-00-B9051, 1057357-00-B, 105735700B9051
- 🔹 Warranty: 2-year warranty
Key Functions
The clock spring maintains continuous electrical connection between the steering wheel and vehicle systems, enabling:
- ✅ Airbag (SRS) system activation – critical safety component
- ✅ Horn operation
- ✅ Steering wheel audio controls (volume, station, mode)
- ✅ Cruise control switches
- ✅ Heated steering wheel function (when equipped)
Signs of Failure
A faulty clock spring may exhibit the following symptoms:
- ⚠️ Airbag warning light illuminates on dashboard
- 📢 Horn does not function
- 🎛️ Steering wheel-mounted controls become unresponsive
- 🔊 Clicking or grinding noise when turning the steering wheel
- 🚨 In critical cases, driver airbag may not deploy in a collision
⚠️ IMPORTANT SAFETY NOTE & INSTALLATION TIPS
Before Installation: Disconnect the battery negative terminal and wait at least 5 minutes for the airbag system to discharge. The contact coil should never be disassembled and must be replaced if the airbag have been deployed .
Centering: Ensure front wheels are perfectly straight. The new clock spring comes with a centering clip – do NOT remove this clip until the clock spring is fully installed and the steering wheel is in position. Rotating the clock spring without the clip can damage the internal ribbon cable.
Pin Configuration Verification: This clock spring has a 5-pin connector configuration for heated steering wheel models. Please count the pins on your original connector before ordering to ensure compatibility .
Steering Angle Sensor Transfer: If your original clock spring has a steering angle sensor attached, you will need to unclip it and fit it to the new unit.
Verification: Always verify that the replacement part matches your original in connector type and pin configuration. For 100% confirmation, contact us with your VIN .
Post-Installation: After installation, verify horn function, steering wheel controls, and ensure the airbag warning light extinguishes correctly .
Professional Installation: Due to the critical safety nature of this component, installation by a qualified technician is strongly recommended.
Quality You Can Trust
- 🔹 High-Purity Copper Ribbon: Stable, interference-free signal transmission
- 🔹 Flame-Retardant Housing: Meets stringent automotive safety standards
- 🔹 Rigorous Testing: 300,000-cycle endurance test (-40°C to +85°C)
- 🔹 Centering Clip Included: Do NOT remove until fully installed
- 🔹 Warranty: 2-year warranty
Package Includes: 1 x Clock Spring Assembly (with centering clip), 1 x Installation Guide (available upon request)
