Description
Siemens Acceleration Sensor for Peugeot 307 Vehicles.
This used Siemens acceleration sensor (OEM Referencing 9635739780) is an economical direct-fit replacement for Peugeot 307 models. It is a critical safety and stability component that provides reliable acceleration data to the vehicle’s control systems. Ideal for professional workshops and competent DIY mechanics who look up parts by product number (9635739780, 5WK42989, 8216AL).
Technical Information
- Manufacturer: Siemens
- Model: Peugeot 307
- Product Codes: 9635739780
- Other Numbers: 5WK42989, 8216AL, NFP
Compatibility
Designed For Peugeot 307 Range. May Fit Multiple Body Variants (Hatchback, SW, CC) Depending On Equipment Level And Production Year. Always Match Product Codes When Searching For Replacement Parts.
Function And Role
The Acceleration Sensor Measures Longitudinal (And Depending On Design, Lateral) Acceleration And Supplies This Data To Safety And Stability Systems Such As Airbag Control, ESP/ESC And Traction Control. Accurate Sensor Signals Are Essential For Timely Airbag Deployment Logic And For Correct Operation Of Vehicle Stability Systems.
Typical Failure Modes
Sensors Usually Fail Due To Electrical Faults (Connector Corrosion, Damaged Wiring), Mechanical Impact (After A Collision), Internal Component Wear Or Contamination From Moisture Ingress. Fault Symptoms Include Warning Lights Related To Airbag Or Stability Systems, Diagnostic Trouble Codes, Or Intermittent System Behavior.
Replacement Procedure
Basic Replacement Steps (General Guidance):
- Disconnect Battery Before Starting Work And Wait The Manufacturer Recommended Time To Prevent Electrical Damage Or Airbag Deployment.
- Locate The Sensor (Common Locations Include Under Center Console, Under Seat Or Mounted To The Body/Firewall; Exact Location Depends On Model And Year).
- Remove Interior Trim Or Mounting Covers To Access The Unit.
- Unplug The Electrical Connector And Unbolt The Sensor From Its Bracket.
- Fit The Replacement Unit In Correct Orientation, Secure Bolts To Manufacturer Specifications, Reconnect The Connector.
- Reconnect The Battery And Clear Related Fault Codes With A Diagnostic Tool; Verify Proper System Operation And That No Warning Lights Remain.
Installation Recommendations
Use Appropriate Tools And Keep Fasteners Clean And Free Of Corrosion. Handle The Sensor Carefully To Avoid Mechanical Shock And Contamination. After Installation, Perform A Full Diagnostic Scan And Functional Check Of Safety And Stability Systems. If In Doubt, Have The Final Checks Performed By A Qualified Technician With PSA-Compatible Diagnostic Equipment.
Why This Part Is Often Replaced
The Sensor Is Frequently Replaced After Front-End Impacts Or When Electrical Connections Corrode. Faulty Readings Lead To Safety-Related Warning Lights And May Degrade Vehicle Stability Or Airbag Performance, Prompting Replacement To Restore Proper System Function.
Notes For Buyers
Search By Product Numbers (9635739780 / 5WK42989 / 8216AL) To Ensure Accurate Fitment. This Component Is Supplied As A Direct Replacement Part Intended For Professional Installation Or Experienced DIY Mechanics.
