If this "Service Engine Soon" light actually functions like a Check Engine Light, rather than as a reminder that an oil change is due, then the appearance of the two lights is interrelated.
When the OBD system detects an issue with the engine and turns on the CEL/SES light, it will also trigger a warning light for the traction control system (TCS) and/or vehicle stablity control system (VSC), simply because both the TCS and the VSC need to reduce engine power when appropriate, in addition to possibly operating the brake on one or more wheels. If the engine is not operating 100% normally, it is difficult for the logic of the TCS/VSC to interact with the ECM--hence the TCS light.
So--step #1 is to have the OBD system checked for trouble codes. Once you have fixed whatever has triggered the trouble codes, the TCS light should go off--either immediately or after a driving cycle or two.