Question about 2003 Volkswagen Golf

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Flashing glow plug light

Passat brake light not working changed bulb but glowplug light still flashing,pluged into diagnostic machine and still comes up with brake light fault but wont clear fault

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  • Anonymous Mar 18, 2014

    glow plugs light and esp light flashing on passat 2006 when i stop engine and restart normal



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Sounds like a glow pug will flash if one glow plug has a fault.

Posted on Jun 03, 2009


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1 Answer

Location glow plug relay

Why not save even more money?
Get a test light and put it onto the tip of the glowplug then get someone to turn ignition on. See if test light turns on.
This needs to be done when cold or it wont work.
The coolant temp sensor switches the glowplug relay via the ecu, so when hot, it wont switch.
A computer diagnostic test would be the best bet to clearly verify a relay failure.

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I have a 1996 K2500 chevy surburban 6.5 turbo diesel that I had to replace the PMD, Intake, and Fule injection pump on and still won't star checked all the usual can you please help?

I have worked on one of a friend of mines,his was hard to start about half of his glow plugs were bad,you can test by takeing a test light with a long cord on it hook the alligator clip to the hot post on the batt unplug glowplugs one at a time touch test light to glow plug were the wire pluged in it should light up if not it is bad,you can buy a/c delco glowplugs at autozone for less than $10.00 a piece.His glow plug controlbox also went out and someone put a selnoid and a manual swich on his.

Mar 20, 2010 | 1996 Chevrolet K2500

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Tail bulbs illuminated on dash panel and glow plug light is on

You may want to check you fuses. If your fuses are good, check you brake light switch.

Feb 08, 2010 | 1999 Volkswagen Passat

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How do i replace my VW SHARAN 02 glow plug relay. and what is it. i have been told that the glow plug relay is going. Could you please tell me what a glow plug relay is and what it does??? Also do i need...

the glow plug relay is a little black box normally located in the fues box, the relay regulates power to the glow plugs, if the relay is not functioning correctly the plugs will not heat enough or, you will have to allow a longer time to let them heat up, it acts like a switch as such, when you turn on your ignition it switches over to make a contact inside, which inturn starts the heating prosess of the glow plugs when they are at the correct tempreture or the onbored computer detects they are it then switches back , without it , say just using a fuse instead, your glowplugs will just get hotter and hotter till they melted, and no you dont have to change the glow plugs hope this helps, ime not good at explaining stuff in writing lol

Jan 30, 2010 | 2002 Volkswagen Jetta TDI

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The glowplug warning on my 2004 polo 1.9 tdi is flashing. i've checked the fuses & they all look good. what next ?

These flashes indicate a system error code and will require further diagnosis from a VW diagnostic machine, probably a glow plug has failed.

Aug 31, 2009 | 2004 Volkswagen Jetta

1 Answer

Glow plugs warning light + brake lights on

I had EXACTLY the same problem with a friends car i was doing work on.
Your problem is almost certainly a faulty brake light switch. This is a common fault and brings on the dash lights you describe. The switch is located just above the brake pedal and is easy to fit. If you can get the OBD codes read...My guess is it will show up this switch as faulty.
Good luck

Aug 10, 2009 | 2003 Volkswagen Passat

9 Answers


Despite what you may read from other comments....The glow plug light is simple a multi function warning light and IS among many othed things in fact used to warn of brake light and brake light switch failure. Therefore it can NOT be treated as glow plug problems only.
I have worked on V.W for many years and have encountered this problem many times. You should get the OBD codes read. This will reveal the exact problem...and there may be more than one
You can contact your V,W agents if you wish and check to see if I am correct.
Best of luck

Mar 21, 2009 | 2002 Volkswagen Jetta TDI

1 Answer

When driving hard or trying to go over 70 mph, car goes into limp mode! A light comes on dash stating take to dealer, also the glow plug light keeps flashing and have loss of power! My car is a 2005 '55...

check it in eobd as well as vw specific what scanner did you use to check for the fault code ? because when that light comes on it has logged a code,it could be anything from a brake light switch to the vains sticking in the turbo

Feb 18, 2009 | 2006 Volkswagen Passat

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