We don’t have to get bogged down in the technical aspects of computer networking and the definition of a bit. Not all networking devices are made by Cisco, but there’s a fair chance that your Ethernet switch is of their making. If you want to learn all about the varying colors of your Ethernet port indicator lights and their meaning, then you’re in the right place. If your glow plug light stays on, it’s likely due to a problem with the glow plugs or the wiring. The glow plugs are responsible for heating the air in the cylinders so that the engine will start. If they’re not working properly, the engine may not start. If you plugged the cable in and you see no light on either port, it’s telling you that the connection isn’t complete.

These are the recommended connection speeds from Apple and Spotify, two of the most popular streaming services.

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Once the DTCs have been read, the mechanic can use the information provided by the OBD device to diagnose the problem and make any necessary repairs. For example, if the DTCs indicate that a specific glow plug is not working properly, the mechanic will replace that glow plug.

If you’re still not sure how to do it, we found a great guide from Car and Driver on how to use an OBD scanner: This warning light should come on before the brake pads become dangerously thin, so you have time to get them changed. You should replace as soon as you can though, as if they wear out completely it could be extremely dangerous.If the Blue light is flashing then the Connector is resetting, synchronising or sleeping. Give it a couple of minutes and it'll turn into a solid Blue light

However, if the light stays on after the engine is warm, it could be an indication of a problem with the glow plugs or another engine component.Wait a couple of minutes for your Hub to start. The light will stay blue for more than 20 seconds when it’s ready This can save a lot of time and money car owners would otherwise spend resolving glow plug problems. Glow Plug Light Flashing VW For many manufacturers, you can simply look up the user manual and find the information, but Cisco systems are so vast that even this task can be daunting. We’ll cover the most common cases, but always remember that your computer could prove to be the exception rather than the rule. A blue light means the hub is working fine. If the wi-fi doesn't work on your device it could be a problem with your laptop or phone.