Question about 2000 Volkswagen Jetta TDI

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2003 Jetta diesel won't start in cold weather

If temperature is below -10 C my Jetta doesn't crank over at all. Have 5 speed transmission and I have to bump start it, after that it runs fine. Could the problem be in the neutral switch as one time with the key cranked over to start position I pumped the clutch several times ( about 10 times) all of a sudden it fired up. Batterie is only a year old and the block heater is plugged in. As i live in northern ontario this problem must be rectified. Just want to know solution before taking to the dealer for repairs. Took it to dealer several times but they just haul it into garage and then there is no problem.

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  • manfred_koeh Jan 09, 2009

    That is

  • manfred_koeh Jan 09, 2009

    That is correct, no power to starter, Have electrical power to everything else.

  • Anonymous Jan 10, 2009

    I have the same problem with my 2003 Jetta. Sometimes if you turn on the lights, turn the key one click, engage the clutch and then turn the key it will start...but not always. This problem only exists when the temp is around 20 degrees F or colder.

  • Anonymous Jan 17, 2009

    I have just purchased a 2009 jetta and am having the same problem. Runs fine all day but this week has been around 0 degrees and the vehicle will not start. There is power to the vehicle, light, gausges ,radio, etc but will not start. Bought the car on tuesday and has been at volkeswagon ever since. They have no clue and wondering if you or anyone ever figured out what caused this dilemma.

  • manfred_koeh Jan 19, 2009

    Block heater was installed at the dealer....been researching this for past several days. I think its either as one said ignition switch or as my brother ( who works in the auto industry) said, the starter may be freezing up after a run down the road.. This seems more viable as in the last week, fired my car up when it was mild, no problem and did not drive it. A couple of days later it got down to about -20 C. and car fired up without being plugged in no problem. Went for a 20 minute drive with fresh snow on the ground. Next day plugged in and guess what nothing... As for the ignition fix found that on the website TDIClub.com

  • jlpatrizi May 11, 2010


    1. I am sorry I dont have an answer for you but I do have a question. I have a hard time starting my 99 jetta but mine does not have a block heater. Did yours come with one if not where did you get it. Thanks for your time. JP

  • kevin carpenter May 11, 2010

    you trun the key to the start postion and the starter dose not engauge? need more info please kdc744

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The first year I purchased my 2000 Jetta diesel, I had similiar problems in very cold weather. I purchased a cold weather fuel additive (Diesel Kleen®) and this fixed the issue. At the time I lived in Ohio and supposedly the fuel from the pumps have an additive for cold weather, but I still had this issue. We purchased the big bottle and added it for every fuel up.

Posted on May 14, 2009

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Diesels do not like to start in cold weather because they do not use Spark plugs like conventional gasoline engines.
Check out this link!!!         http://auto.howstuffworks.com/diesel1.htm

Posted on Mar 02, 2009

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We had this problem and replaced the ignition switch.

Posted on Jan 13, 2009

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Most cars with a 5 speed trany requires you to depress the clutch as u turn the key. It sounds like the switch on the clutch peddle has a loose wire or the switch is bad. Try a jumper wire across the clutch switch.

Posted on Feb 03, 2011

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tdisline_432.jpg



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tdisline_434.jpg
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