If you are going over an uneven surface, the light may come on because one wheel is spinning faster then the others.
The traction control system malfunction light is a warning light that indicates the tires are losing traction on the road. If driving in adverse weather when the light comes on slowing down will make it go out.
The Traction Control Light comes on every time you turn on the ignition. It should go off as soon as you start the engine. If it does not, then you have the traction control turned off. Turn it back on and the light will go off. If you have the Traction Control turned on and the light stays lit, then there is a problem with the traction control.
It means one or more of the cars tire's has lost grip with the road and traction control is kicking in.
The only thing that comes to mind is the Traction Control.
Purchase a Purolator cabin filter which comes with complete instructions.
Check your control arms. Bushings could be bad.
Traction Control System
This is your Traction Control which prevents wheel spin. Turn it on and leave it on. The traction control comes on with each key cycle The button is to turn the traction control OFF If you want wheel spin or need to run vehicle on a dynomometer or hoist
In a 1999 Mercury Mountaineer : Either the 4.0 liter Single Over Head Cam ( SOHC ) V6 engine , or the 5.0 liter V8 , which is an over head valve / push rod design engine
It comes on automatically. If it is not on, the warning light comes on and the failure should be investigated.
On a 2002 Mercury Mountaineer : The " check gage " light comes on if the engine coolant temperature is too high , the engine oil pressure is too low , or the gas gauge is at or near empty
THE TRACTION CONTROL SENSOR IS INTERGRATED INTO THE ABS CONTROL MODULE. EBCM (ELECTRONIC BRAKE CONTROL MODULE). THIS IS LOCATED ON THE DRIVER FRONT INNER FENDER WELL. THIS UNIT HAS STEEL LINES AND ELECTRICAL WIRE COMING OUT OF IT....WHEN THIS MESSES UP ABS LIGHT AND TRACTION CONTROL DOES NOT WORK.. DEALER PRICE ON EBCM IS $850.00 PLUS LABOR!