ESC is what some manufacturers call ESP.
The traction control system uses the wheel speed sensors of the ABS (antilock brake) system but instead of releasing the brake of a wheel that is locking, uses a different programme to apply the brake of a wheel spinning under acceleration. I believe the ESC system is similar in principle but a more refined programme to increase vehicle stability.
Servicing the system is a specialist task requiring access to some sophisticated electronic equipment and somewhere in the process there should be an experienced thorough visual inspection of all the external components.
SOURCE: SERVICE TRACTION/SERVICE ESC LIGHT COMES ON
Take it in to see which wheel is throwing the code. Some auto part stores let you use theirs for free. then check for corroded connectors or broken wires at the wheel bearings and speed sensors.
Clean corroded connections with a cleaner such as contax or acid wheel cleaner, then rinse and dry thoroughly and coat the female end of the connection with dielectric grease before reassembly.
Best of luck. These are GREAT cars!!!
SOURCE: 2008 saturn aura xe service esc comes on
My first suggestion to try for this car is to disconnect the battery, take and pull the access panel on the fuse box on the passenger side of the vehicle. Buy a pack of dilectric grease at autozone or another part store the small packets (usualy 1.27 or something) then unbolt the ground wires which are located in the fuse access towards front put grease on it and tighten down bolts again. Making sure they go completly flush on my car there was a burr in the middle of the threads and this fixed my issues. I was having random service esc, and airbag light on and various other gremlins at diffreent times. It Fixed mine it's worth a try.
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