HomeElectrical, Lighting and Body > SensorsStandard Ignition SC684 Vehicle Speed Sensor
Part #: SC684

Standard Ignition SC684 Vehicle Speed Sensor

25 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Volkswagen and Audi, Phaeton, A8 Quattro, RS6, S8, S6, A4, and A4 Quattro
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Overview of Standard Ignition Vehicle Speed Sensor SC684

The Standard Ignition Vehicle Speed Sensor SC684 is designed for precise speed measurement on select Audi and Volkswagen models. Engineered for reliable performance, this sensor ensures accurate data transmission from the transmission to the vehicle's control systems.

  • Connector Gender: Female
  • Single rectangular plug-in connector
  • Bolt mount installation on transmission
  • Two male blade terminals for secure electrical connection
  • Compatible with Audi A4, A4 Quattro, A8 Quattro, RS6, S6, S8 and Volkswagen Phaeton

Technical Description and Attributes

The SC684 vehicle speed sensor features a female connector with a rectangular shape designed for a plug-in connection, ensuring a stable and secure fit. It mounts directly onto the transmission using a bolt mount type, providing a firm and vibration-resistant installation. The sensor includes two male blade terminals, which facilitate reliable electrical contact and signal transmission. This configuration supports accurate speed data delivery to the vehicle’s electronic control unit (ECU), essential for proper operation of speed-dependent systems.

Compatible Vehicles and Applications

This vehicle speed sensor is compatible with a range of Audi and Volkswagen models, including the Audi A4, A4 Quattro, A8 Quattro, RS6, S6, S8, and the Volkswagen Phaeton. It is specifically designed to replace original equipment sensors on these vehicles, ensuring proper fit and function.

  • Helps resolve inaccurate speedometer readings
  • Addresses transmission shifting issues related to speed sensor faults
  • Corrects ABS and traction control warning lights caused by faulty speed data
  • Prevents erratic cruise control behavior
  • Eliminates engine performance problems linked to speed sensor errors

Installation Notes and Tips

Installation of the Standard Ignition SC684 sensor requires access to the transmission mounting location. Ensure the vehicle is securely lifted and supported before beginning work. Disconnect the battery to prevent electrical shorts. Remove the old sensor by unbolting it from the transmission and disconnecting the plug-in connector. Install the new sensor by aligning the bolt mount and securing it firmly. Connect the female rectangular plug to the sensor’s terminals, ensuring a snug fit. After installation, clear any diagnostic trouble codes and verify sensor operation through a test drive.

Quality Assurance and Warranty

Standard Ignition parts are manufactured to meet or exceed OEM specifications. The SC684 vehicle speed sensor undergoes rigorous quality control to ensure durability and reliable performance. This part is backed by Standard Ignition’s limited warranty, providing coverage against defects in material and workmanship under normal use conditions.

BrandStandard Ignition
Part NumberSC684
Connector GenderFemale
Connector ShapeRectangular
Connector TypePlug In
Mounting LocationOn Transimission
Mounting TypeBolt Mount
Terminal GenderMale
Terminal TypeBlade

This part fits 25 vehicles. Search below:

YearMakeModelDrive TypeTransmissionPositionNotes
2006VolkswagenPhaetonN/AFor Transmission Control Module.
2005VolkswagenPhaetonN/AFor Transmission Control Module.
2004VolkswagenPhaetonN/AFor Transmission Control Module.
2003AudiA8 QuattroAWDN/AFor Transmission Control Module.
2003AudiRS6N/AFor Transmission Control Module.
2003AudiS8N/AFor Transmission Control Module.
2002AudiA8 QuattroAWDN/AFor Transmission Control Module.
2002AudiS6N/AFor Transmission Control Module.
2002AudiS8N/AFor Transmission Control Module.
2001AudiA4AutomaticN/Aw/o Wire; Located in Transmission
2001AudiA4 QuattroAutomaticN/Aw/o Wire; Located in Transmission
2001AudiA8 QuattroAWDN/AFor Transmission Control Module.
2001AudiS8N/AFor Transmission Control Module.
2000AudiA4AutomaticN/Aw/o Wire; Located in Transmission
2000AudiA4 QuattroAutomaticN/Aw/o Wire; Located in Transmission
2000AudiA8 QuattroAWDN/AFor Transmission Control Module.
1999AudiA4AutomaticN/Aw/o Wire; Located in Transmission
1999AudiA4 QuattroAutomaticN/Aw/o Wire; Located in Transmission
1999AudiA8 QuattroAWDN/AFor Transmission Control Module.
1998AudiA4FWDAutomaticN/ALocated in Transmission
1998AudiA8 QuattroAWDN/AFor Transmission Control Module.
1997AudiA4AutomaticN/ALocated in Transmission
1997AudiA4 QuattroAutomaticN/ALocated in Transmission
1997AudiA8 QuattroAWDN/AFor Transmission Control Module.
1996AudiA4 QuattroAutomaticN/ALocated in Transmission

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

01V927321A5S1252274208SN8386SU13937VSS1218

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.