An incorrect reading from a defective thermostat can cause a Check Engine Light to appear on your dash. Schedule Test Drive The thermostat in your Volkswagen's engine helps manage operating temperatures to avoid overheating. Check engine light flashing car shaking is a clear sign of trouble. There are many reasons as to why it’s on, and they usually aren’t a huge problem. It's important to address a Check Engine Light as soon as possible in order to prevent serious damage to your Volkswagen. The warning light for your engine is usually illuminated when prompted by the engine control unit (ECU) that manages the engine. That realization may invoke an anxious response of “why is my Volkswagen check engine light on?” Fear not! why does my check engine light come on in my 1993 Volkswagen jetta? A flashing Check Engine Light indicates that your vehicle’s engine is in serious trouble, whereas a steadily lit one means less urgent service is needed. I literally had it serviced last week for its 20k birthday and everything was great but this damn light won’t turn off. We look forward to working with you. There are a variety of reasons why the light might be on. Vibration or shaking may be caused by misfires, poor fuel pressure, or faulty spark plugs. If low brake fluid, STOP (you will hear a 1x audible warning). Other Issues: Flashing Check Engine Light- Volkswagen Passat While a majority of the time, the flashing check engine light is going to be caused by a misfire related to your Passat’s ignition system or fuel system (as stated above), there are other issues that can cause it. Either way, if the issue is a loose gas cap, even after fixing it, you may need to drive for about 50 to 100 miles (80 to 160 km) before the check engine light resets. Get your Volkswagen the care it needs with a visit to our beautiful service department today. Now that you've learned about the various common causes of a Check Engine Light, it's time to let the factory-trained Volkswagen technicians and service experts at Volkswagen of Ann Arbor diagnose the issue. Is conventional oil the same as synthetic? You can count on the team of service experts at Volkswagen of Ann Arbor to diagnose, repair, and keep your Volkswagen running like new. Question type: Maintenance & Repair. guidelines, all employees and visitors are required to wear masks & A loose fuel cap is one of the most common reasons why the check engine light turns on. Your mass air flow sensor measures the amount of air entering the engine to determine how much fuel is needed to run your engine efficiently. Please also check out the statistics and reliability analysis of the 2012 Volkswagen … Get Approved You should also know that a defective idle air control valve might make the engine … It could mean a simple fix or spell the end of your car: the 10 top reasons your car's check engine management warning light is on. The cap is a crucial part of a car’s fuel delivery system. Most common reasons your Volkswagen check engine light is on The reality of the situation is the reasons behind a check engine light have to do with the exhaust system and things that interfere with this system are numerous. The catalytic converter helps protect our environment by converting harmful carbon monoxide into carbon dioxide. Why is my Volkswagen check engine light on? You Have a Bad O2 Sensor. When something goes wrong in this complex collection of components and sensors, it triggers this light. If the light stays on after a few days or so, then it’s time to get your Volkswagen in for maintenance. Image from: GoranH It may sound obvious but a loose/faulty gas cap can actually set the check engine light on. The Check Engine Light, also called the Malfunction Indicator Light (MIL) is a warning light (sometimes called a tell-tale) that indicates a malfunction with your vehicle (as detected by your car’s computerised engine-management system).. One question we get asked is “how long can I wait before I get my Volkswagen in for service?” When it comes to the check engine light, we recommend trying to tighten the gas cap and waiting a day or so to see if the light turns off by itself. A faulty mass air flow sensor can cause a Check Engine Light. The most recently reported issues are listed below. One thing that can really throw us for a loop is when the check engine light comes on in our vehicles. I have 96K miles on my 2005 VW Passat 1.8. Designed to monitor the levels of unburned oxygen in your exhaust system, the oxygen sensors in your Volkswagen can fail if not maintained over time. I have a 2018 VW atlas and the check engine light keeps coming on. My daughters 2004 passat 1.8t check engine light came on 3 days ago( she just told me today). When not functioning properly, it's possible for a catalytic converter to cause a Check Engine Light. Your gas cap is responsible for keeping your fuel tank sealed, preventing gas fumes from escaping into the air, or worse - into your vehicle. If ABS malfunction, see owner’s manual. The Oxygen Sensor, also called an O2 Sensor, relays important information to your car's Electronic Control Unit (Abbreviated as "ECU" and can be thought of as your car's "computer"). I Lost My VW Key Fob! Here our award-winning team of Volkswagen factory-trained and authorized service technicians can help with anything your vehicle might need. 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