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TDI 101 Got a simple/basic TDI question? Are you a newbie (new to the forums). Feel free to post your question here.

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Old May 5th, 2001, 15:12   #1
Join Date: Dec 2000
Location: Woodbridge VA
Default Re: Malfunction Indicator light

Cars dont have malfunction lights. They have Check engine lights, SRS (airbag) lights, oil pressure lights, and so on. Which light is coming on? Lights come on in these cars all the time. Its ususally simple and cheap (or free) to fix. Somtimes its somthing as simple as a loose gas cap. Give us more information so we can help you. Have you ever walked into the doctors office and said "I hurt" and given the doctor no other info expecting him to fix you up? get my point? [img]images/icons/grin.gif[/img] [img]images/icons/grin.gif[/img]
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Old May 5th, 2001, 15:44   #2
Veteran Member
Join Date: Oct 1999
Location: Diesel is diesel is diesel!
Default Re: Malfunction Indicator light

Actually in the TDI the glowplug light acts as a MIL. It will come on for all kinds of failures not related to glowplugs, i.e. a faulty brake light switch.

The check engine light is generally tied to emission controls failures.
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Old May 6th, 2001, 00:35   #3
Join Date: Sep 2000
Location: Elysburg, Pa.
Default Malfunction Indicator light

I have a 98 tdi jetta and my malfunction indicator light came on...Anyone ever have this problem??? What could be my problem???
Thanks for the help.....
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Old May 7th, 2001, 18:50   #4
Moderator at Large
Join Date: Jun 1999
Location: Brampton, Ontario, Canada
Default Re: Malfunction Indicator light

A code is stored in the computer when the "check engine" light is on. In order to read this code, it is necessary to connect the car to a suitable computer. The dealer can do this, or you can find someone in your area who has a VAG-COM or VWTool software. Check the maintenance archives on these forums, there's an (out of date!) list in there.

Unless the car is giving other symptoms, there is no way to even hazard a guess of what's wrong without knowing the stored code.

And yes, it can indeed be caused by a faulty brake light switch or a bad glow plug.

Brian P.
'96 Passat TDI mit UPsolute
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