Sometimes when i am driving down the road both of these lights turn on but doesn't do anything to the car, then when i shut the car off and start it again there not on. The key module has been replaces 3 times and a new computer. Does anyone know what the problem is ?

 

Not knowing much about your issue as my theft/securety light meant it wouoldn't even crank. If the service engine light, and theft light are on, is there anyway you might get a code? You might invest in an inexspensive scanner, just leave it hooked up, and when the sel comes on, get the code.

 

I had the same problem, but then it got worse. My radio would kick off and on, gauges would die and come back and other crazy stuff. The whole time it didnt throw any codes. Turned out to be a bad ground at the battery. I cleaned it up where it attached to the battery tray, problem solved.