---
id: faq-0073
title: "What should I do if my check engine light comes on?"
category: faq
subtopic: service-and-maintenance
page_type: faq
source_url: "https://www.castlevwdownersgrove.com"
tags: ["diagnostics", "warning-lights", "repair"]
questions:
  - "What does the check engine light mean?"
  - "Is it safe to drive with a check engine light on?"
  - "How do I fix the check engine light?"
related: [diagnostics, multi-point-inspection]
dealer: Castle Volkswagen of Downers Grove
---

A check engine light (or service indicator) means your vehicle's onboard diagnostic system has detected an issue. It could be something minor like a loose gas cap or something more serious like a sensor problem. If the light is steady, it's usually safe to drive to the service station, but if it's blinking, stop driving immediately-that signals an urgent engine problem. Don't ignore it; a small issue left alone can become expensive. Castle Volkswagen of Downers Grove's Service team uses advanced diagnostic tools to read the code and pinpoint exactly what's wrong. We'll explain what we find and give you repair options so you can make an informed decision. The sooner you address it, the better. Call (630) 598-9986 right away to schedule a diagnostic appointment and get your vehicle back to normal.