Thats not good, if the glow plugs are being charged the whole time They will burn out quickly if not already. Even if the glow plugs are burned out the engine will still start unless your in a really cold region. Sounds like the GP (GP = glow plug) relay is fused in the open position, its located above the fuse panel refer to your owners manual to its exact location above the fuse panel. Just pull this relay out and your light should go out while engine is running. If this works simply replace the relay from your local Volkswagen dealer, but the bad news is I would highly recommend pulling the GP's out and checking to see if theres anything left of them. There not built to be on constant. Good luck Hope thats your problem just a relay.
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What you need to do is make sure the key is off, remove glow plugs, hook a set of jumper leads to your battry, put the negative lead around the threaded part of the plug, hold the + jumper lead to the top of the plug where the power rail bolts on. DO NOT TOUCH glow plugs as they will heat up hot & fast. If the light comes on 6 - 8 sec thats how long you need to hold the power on. The tip of the plug should be nice & red hot in this time. Repeat for all plugs & see the diffrence If more than 2 are dead (no red heat) or noticably slower than the others It will be very difficult to start & the plugs should be replaced. AGAIN carefull not to get burned.
No the glow plugs circuit is separate. They actually are on a timed delay shut off. Check the glow plug relay module behind the driver side headlamp assembly. If the light on the cluster is staying on all the time it's simply letting you know there is a fault in the glow plug circuit. Doesn't actually mean that the glow plugs are staying on all the time. You might just have a bad glow plug which is breaking the circuit therefor the glow plug light stays on. To check this use a test light and have someone turn on and off the ignition to see which plug doesn't light up.
check to see if your brake lights are working.usually the stop light switch fails and is the cause.but before buying a new one check the stop light fuse.its a common problem with a simple fix.hope this helps.
This could most likely be one of 2 things, 1. if it is your maintainance light, it is probably one of your sensors, possibly the mass air filter sensor, oil pressure sensor, and 2. If it is a diesel engine and its the glow plug light, you would need to replace your glow plug relay because it telling you that the glow plugs are still on when the engine is running, which you should take care of asap before you have to replace the glow plugs themselves.
the idea or concept of the glow plug is to heat the fuel long enough to start the motor.... it should stay on long enough for the glow plugs to heat up enough to start the motor then they go off because they have done their job. so the light going out is normal after a few seconds
Robert
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they are giving you bad advice... that light is basically normal ... your glow plug light... if the motor starts ok ... it's nothing to worry about .... unless i've missed something and you are saying the light stays on... basically with a diesel you turn the key on... wait for the glow plug light to go out ... then start it.
Hi Robert From the brief description of your problem I'm guessing your vehicle is a Diesel? as the light you refer to sounds like the Glow Plug warning. When you turn on the ignition from cold the light comes on for around 5 to 10 seconds and then you start engine Yes? If the light is coming on after vehicle is warmed up the glow plugs will upset the combustion and ruin your performance, so I would be looking at glow plug timer fault. Hope this FixYa's problem! Paul 'W' U.K.
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