Description
Siemens Acceleration Sensor For Peugeot 307 First Generation
High-quality Siemens acceleration sensor designed for Peugeot 307 first-generation vehicles. This sensor (part numbers 9649474680, 5WK42989, 8216AL) monitors vehicle longitudinal acceleration and supplies precise motion data to stability, traction and engine management systems. Ideal for professional mechanics and experienced DIY enthusiasts looking to restore correct dynamic control, traction response and diagnostic accuracy after sensor failure or collision repair. Common search terms: Peugeot 307 acceleration sensor, Siemens 5WK42989, 9649474680 sensor, 8216AL accelerometer.
Technical Information
- Manufacturer: Siemens
- Model: Peugeot 307 (First Generation)
- Product Codes: 9649474680 | 5WK42989 | 8216AL
- Additional Numbers: 5WK42989 | 8216AL | 9649474680
Function and Application
This acceleration sensor measures longitudinal (and in some configurations lateral) acceleration of the vehicle and provides real-time data to systems such as ABS, ESP (stability control), traction control and engine management. Correct sensor signal ensures stable vehicle dynamics, accurate traction intervention and proper response of electronic safety systems. The unit is typically used on Peugeot 307 first-generation models and is frequently referenced by its OEM and supplier part numbers when searching or ordering.
Replacement Procedure And Recommendations
- Safety First: Disconnect the negative battery terminal before starting work to avoid electrical damage and unintended airbag or system deployment.
- Access: Remove interior trim panels or center console covers as required to reach the sensor—on many 307s the sensor is mounted on the vehicle body or floor near the center of the vehicle or under the dashboard.
- Removal: Unplug the electrical connector and remove mounting screws or bolts securing the sensor. Inspect the connector and wiring harness for corrosion or damage.
- Installation: Fit the new sensor in the same orientation, secure with original fasteners and reconnect the electrical plug. Follow manufacturer torque recommendations where available.
- Diagnostics and Calibration: After replacement clear fault codes and perform any required initialization or calibration using a suitable diagnostic tool (DiagBox/OBD2 scanner). Systems that rely on acceleration input may require a basic setting or calibration to restore full functionality.
- Post-Installation Check: Verify correct operation by checking for stored fault codes and performing a short test drive to confirm stability and traction control behaviour.
Why This Part Fails Most Often
- Connector Corrosion Or Wiring Damage: Moisture ingress and road corrosion often lead to intermittent signals or open circuits.
- Physical Damage: Impact from collisions or improper handling during previous repairs can damage the sensor housing or internal elements.
- Electrical Faults: Short circuits or voltage spikes in the vehicle electrical system can degrade the sensor electronics.
- Aging And Environmental Stress: Over many years thermal cycling and vibration may affect sensor accuracy and cause drift or failure.
Notes For Professionals
When replacing acceleration sensors, inspect the surrounding mounts and harness and address any corrosion or damage to ensure long-term reliability. Use OEM-equivalent part numbers (9649474680 / 5WK42989 / 8216AL) to obtain correct fitment and performance for Peugeot 307 first-generation vehicles. After installation, perform diagnostic checks and calibrations as required to clear faults and restore accurate vehicle dynamics control.
