Question about 2002 Volkswagen Jetta TDI

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Cold weather starting

When the temp is below 40 degrees (f) my Jetta's engine will not start, it takes a "jump start" to get it going. I turn the ignigtion on and off 2-3 times to warm the glow plugs. But it seems like the battery is just drained. Any Ideas?

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I think you are ready for a battery, especially if it's never been replaced. You can take it out and have it tested for free at autozone or many other good parts stores.  It may start when it's warmer because the oil is thinner and it takes less effort to turn the engine then.
I've replaced the battery within a couple of minutes (my battery tested good) without having to set the radio code.  Beware if the battery is out for any length of time, you may need to have some of the ECM reset.  Best best is to figure out how to get the battery out and unhooked at home WITHOUT actually doing it,  then go to parts store with the tools you now KNOW will work,  pop it out, put it on their tester, and get the old or new battery back in the car soon.  I don't know how long you have, but I seem to remember everything being OK for 15 minutes or so.

Posted on Nov 05, 2008

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