1996 Ford Thunderbird Owner's Manual - Page 174

The Traction AssistTM system can be manually turned off, to allow wheelspin if you want, by pushing the TRACTION ASSIST switch (located on the console) when the vehicle is not in the Traction AssistTM mode. The word "OFF" in the switch will light up to indicate the system is off. The Traction AssistTM system will automatically be on each time the engine is started. During ordinary driving, it is recommended to leave the system turned on. The Traction AssistTM system will then always be ready to operate when needed. The Traction AssistTM switch During the Traction AssistTM function, which most often occurs during low speed acceleration on slippery surfaces, a noise may be heard coming from the engine compartment. This noise is created by the ABS pump and is normal and may last for a few seconds during the acceleration of the vehicle. In general, this system improves your vehicle's stability and acceleration performance when road conditions warrant. Traction AssistTM is fully effective up to approximately 25 mph (40 km/h). At 25 mph (40 km/h) the function begins to taper off until it no longer operates above 34 mph (55 km/h). 171