Description
Left front pyrotechnic seat belt for Toyota Aygo
Up To 2013
Driver’s Seat
5 Door
This left front pyrotechnic seat belt is suitable for Toyota Aygo models and is commonly compatible with platform siblings Citroën C1 and Peugeot 107. Identified by part codes 7P2170-P, 16084059XZ and B0009077XZ, the assembly includes a pyrotechnic pretensioner that activates in a collision to reduce occupant movement by removing slack from the belt. The unit is intended for the driver’s seat of 5-door vehicles up to the 2013 model year. Ideal for professional workshops and experienced DIY mechanics who search by part number or vehicle model when sourcing replacement safety components.
Technical Information
- Manufacturer: Stellantis / Toyota
- Model: Toyota Aygo (Up To 2013); Compatible With Citroën C1 And Peugeot 107
- Product Codes: 7P2170-P; 16084059XZ; B0009077XZ
- Other Numbers: 16084059XZ | 7P2170-P | B0009077XZ
Function And Application
The pyrotechnic seat belt combines the inertia reel and a pretensioner pyrotechnic charge. During a significant impact the pretensioner fires and retracts the belt instantly, improving occupant restraint and reducing forward movement. The mechanism is single-use: once the pyrotechnic element has activated during a collision it must be replaced. The belt assembly also contains sensors and electrical connectors that interface with the vehicle airbag/SRS system, so correct electrical reconnection and clearing of fault codes is essential after replacement.
Installation Recommendations
- Always Disconnect The Battery Before Working On The Seat Belt Or SRS Components And Observe Manufacturer Waiting Times To Allow System Capacitors To Discharge.
- Remove Interior Trim Panels Carefully To Access The Seat Belt Retractor And Anchor Points; Avoid Excessive Pulling On Wiring Harnesses.
- Unplug The Pretensioner Electrical Connector Using The Correct Release Method; Inspect Connectors For Corrosion Or Damage Before Reassembly.
- Fit The New Assembly Ensuring Correct Routing Of The Webbing And That All Bolts Are Tightened To The Vehicle Manufacturer’s Torque Specifications.
- After Installation, Use A Diagnostic Scanner To Check And Clear Any SRS Or Seat Belt Fault Codes; Confirm Proper Function Of The Belt Reminder System.
- If In Doubt, Have The Replacement Carried Out By A Qualified Technician With Appropriate Tools And Diagnostic Equipment.
Most Common Reasons For Failure
- Activation During A Collision — The Pyrotechnic Pretensioner Is Single-Use And Must Be Replaced After Deployment.
- Electrical Faults Or Damaged Connectors Causing Loss Of Signal To The SRS System.
- Mechanical Wear Or Contamination Of The Retractor Mechanism Leading To Poor Retraction Or Locking.
- Corrosion Of Mounting Points Or Connectors In Older Vehicles Or Those Exposed To Moisture.
- Physical Damage To Webbing From Sharp Objects, Heat Or Excessive UV Exposure.
Searches By Part Number (7P2170-P, 16084059XZ, B0009077XZ) Are Common — Use These Codes To Confirm Fitment Against The Vehicle Model And Year.
