Warning light EPC

2013 VOLKSWAGEN JETTA
135,000 MILES • 2.5L • 5 CYL • 2WD • AUTOMATIC
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JYOUNG123
  • MEMBER
  • 10 POSTS
After I picked up my car from the mechanic for a rough idle issue, he said it was a vacuum leak and replaced something, I should have asked. I planned a drive and after about 40 minutes the EPC light came on. I continued to my destination. The car felt fine. After about 30 minutes I started the car and the EPC light was off but the 4-way emergency flashers didn't work. The signals were fine. There's quite a list of possible issues. any knowledge/direction would be great. thank you
May 11, 2021 at 6:16 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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KASEKENNY
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 18,907 POSTS
The EPC light is for the Electronic Power Control system. Normally this means there is an issue with the cruise control, throttle position sensor, throttle body or something related.

However, the next step is to check for any codes as we will need to know where to start.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

The flashers may be related to this but we need to start with codes and go from there.

If there are no codes then we can tackle the flashers next. I am attaching the wiring diagrams for the flashers if we want to jump to it anyway and check voltage from the button to the VES control module.

https://www.2carpros.com/articles/how-to-check-wiring

Let us know what you find with this this. Thanks
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May 13, 2021 at 5:39 PM
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