- SAE
- SAE J1708
- SAE J1939
- SAE J2534
- SAI Pump
- SAS
- Scanner
- Scan Tool
- SCR
- SCR Efficiency
- Seat Match
- Secondary Air Injection
- Self-Diagnostics
- Serpentine Belt
- Service Function
- Shift Solenoid
- Short to Ground
- Signal Bias
- Slip Speed
- Smart VIN
- SOC
- Soft Fault
- SOH
- Soot Load
- Special Functions
- SRS
- Stall Speed
- Steering Torque Sensor
- Stored Code
- SULEV
- Supercharger
- Suspension Calibration
- Sway Bar Link
