DJPT Posts: 4,533. The ignition system consists of spark plugs, plug wires, and the ignition coil packs (older vehicles have a distributer that has the same function as coil packs). Anyone with a VW probably has seen the CEL on a lot, but I've never seen mine blink. When the check engine warning light is illuminated it’s often accompanied by tell-tale signs that the engine is not working properly, such as a lack of power or stuttering as you press the accelerator. The problem can be something as simple as a loose fuel tank cap, a bad spark plug, but it can also indicate a serious engine problem. If you notice that your check engine light is on and none of these tips seem to help, make sure you visit your trusted service station. It flashed maybe 3-4 times and then went away. Ideally if it does that again plug your scanner in right away. Unlike the check engine light, the other lights in your gauge cluster are fairly easy to understand, once you recognize the symbol. But it can also be an indication of a blown head gasket or clogged catalytic converter. Also the engine was shaking pretty hard. Store codes, or write them down. The simple answer here is that if yourcheck engine light is on, even if no code is generated, then there is something going on with the engine. This raw fuel can detonate, which causes damage to the catalytic converter and the exhaust system itself. Vibration or shaking may be caused by misfires, poor fuel pressure, or faulty spark plugs. Pay attention to anything out of the ordinary regarding how your engine works, including warning lights on the dashboard. You will need to read the codes with an OBD2 scanner. If you believe the issue to be settled and the light still is on, the best way to turn it off is the same way you found out the problem to begin with, through the use of an ODBII diagnostic tool or VCDS. While a majority of the time, the flashing check engine light is going to be caused by a misfire related to your Beetle’s ignition system or fuel system (as stated above), there are other issues that can cause it. Worn spark plugs are another common problem that triggers VW check engine light to come on. I get about half way there, when I notice that the check engine light is flashing. The car uses a Check engine light to warn you that something is not working properly. If the light stays on after a few days or so, then it’s time to get your Volkswagen in for maintenance. If it’s flashing for more than 6 seconds, that is potentially an emergency situation. The vehicle is emitting emissions which are higher than the Environmental Protection Agency mandates, and that is why the check engine light is on. You should adjust your driving style, be moderate, and don't push it to high revs. If your VW is still running fine with CEL on, in general, you can continue your drive. To find out why your check engine light is on, read the fault codes. This is due to fuel not getting burned in the cylinder. There are hundreds of possible problems that can trigger the check engine light on a Volkswagen. A flashing check engine light means that the problem is occuring at the moment and it’s most likely a more serious problem like a misfire. Just search that code and your car on the internet or forums. Here's a look at what the flashing of the check engine light … These trouble codes will be able to tell you where to start hunting down the problem. This problem is typically caused by a bad spark plug or ignition coil. Save Share. I have a 2005 Volkswagen Polo 1.2 (55PS) E. A few days ago, the engine management light started flashing and the engine was mis-firing. When your car talks to you, you definitely want to be all ears to her problems. That serious problem vw check engine light flashing typically caused by a bad spark plug or coil! 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