What would cause Check engine light, ESC off light, and ABS light to come on?
Cruise control and AC also stopped working. I changed the brake light switch, but that didn't change anything. Check engine light came on the day after the ESC and ABS.
Cars & Trucks - Kia - Optima - 2006 Kia Optima EX
Answers & Comments
You'll need to have someone scan the engine and body computers to get the trouble codes. The ESC and ABS could be on because of a problem connected to the engine computer, or they could have their own issues in addition to the engine. All three systems work together.