Question about 2000 Volkswagen Jetta TDI

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Ignition key code problem

Twice this year my 2000 Jetta TDI would not start because the chip in the ignition key lost its coding to deactivate the immobilizer. Switching keys did not deactivate the immobilizer and I had to get the car towed to a dealer to get all keys re-coded. Are the keys the problem or is there a receiver in the ignition that could be faulty? Re-coding the keys solved the problem but even a brand new re-coded key lost its coding after 3 months so I suspect something else besides the keys.

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"...or is there a receiver in the ignition that could be faulty?"

Hi, I think you will find that there is a little coil in the steering column near where the key goes in which "reads" the key. Whether that is faulty or not is another matter. The best way forward is to get a list of fault codes from the onboard diagnostic system and take it from there. You could either go to a VW dealer, or if you are technically minded you could buy a £15 interface cable, download some free "VAG diagnostic software" and run it on a portable computer.

Hope this helps.D

Posted on Jul 20, 2008

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Posted on Jan 02, 2017

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2001 chevy cavalier lost key can I replace the ignition switch without a key?


the original key is coded to your car.
So changing the barrel to have a new key wont help and ill tell you why.
Inside the original key is a transponder chip that is programmed to the cars immobiliser unit.
Attached to the ignition barrel is whats called a reader coil and its job is to read the keys chip when inserted in the barrel to deactivate the immobiliser so that the car will start.
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Thief light on in ny 2000 ford tuatus and car wont start


Lock the car up. Unlock the drivers side door with the key, try to start it. If it doesn't, do it again, except unlock the passenger side. If still no start, you have to have the codes read. It could be many things. A computer,wiring, the receiver is bad, or the chip in the key has died.

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Can vw jetta tdi mechanics key used incorrectly cause the car not to start?


If you mean the valet key, no. I use that key frequently in my 2001 TDI.
Only the ignition switch has a receiver to identify the chip in the key fobs but the valet key has the chip also.

Oct 13, 2014 | 2000 Volkswagen Jetta TDI

1 Answer

My theft light on my 1998 Lincoln Navigator is on and the car won't start.


Deactivating/activating the autolock feature...
Before following the procedure, make sure that the ignition is OFF and all vehicle doors and the liftgate window are closed.
You must complete steps 1-5 within 30 seconds or the procedure will have to be repeated. If the procedure needs to be repeated, you must wait 30 seconds.
1. Turn the ignition key to ON.
2. Press the power door unlock control three times.
3. Turn the ignition key from ON to OFF.
4. Press the power door unlock control three times.
5. Turn the ignition back to ON. The horn will chirp.
6. Press the unlock control, then press the lock control. The horn will
chirp once if autolock was deactivated or twice (one short and one long
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7. Turn the ignition to OFF. The horn will chirp once to confirm the
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Also, if your vehicle is equipped with a coded-key anti-theft system. Only the correct key will be able to start your vehicle. If your keys are lost or stolen, you must take your vehicle to a Ford/Lincoln-Mercury dealership for re-programming.
Programming additional keys If you need additional keys electronically coded for your vehicle, spares can be purchased (a maximum of 16 keys can be programmed). To program a new key, perform the following procedure:
1. With the coded key in the ignition, turn the ignition from ON to OFF.
2. Within 15 seconds of turning ignition off, insert the new coded key
into the ignition and turn it from OFF to ON or START. If successful, the
THEFT indicator light will illuminate for two seconds. Repeat procedure
for all new keys.
If key coding fails, the THEFT indicator light will flash.
Coding failure can be caused by any of the following:
² The new key was not inserted into the ignition within 15 seconds.
² 16 keys have already been programmed.
² The new key does not have an electronic code.

Other details can find in the 1998-Lincoln-Navigator-Owners-Manual

Good luck (remember comment and rated this).

Jul 09, 2010 | Cars & Trucks

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My Battery died and now my car radio isn't working anymore,can you help


Call the dealer,with the v i n number,and get the code,and procedure to reprogram the radio.

Mar 12, 2010 | 2000 Volkswagen Jetta TDI

1 Answer

2000 VW Jetta TDI interior lights wont go off


i still think you have a bad or loose door sensor

Apr 01, 2009 | 2000 Volkswagen Jetta TDI

1 Answer

Electronic immobilizer


most likely cause is the gauge cluster, this will have to be tested and service by your local dealership because the dash cluster and keys have to be coded. I have seen the immobilizer loose it's coding for apearantly no reason. therefore have them recode cluster and see if problem goes away, if it doesn't the gauge cluster will have to be replaced.

Mar 27, 2009 | 2000 Volkswagen Jetta TDI

1 Answer

2000 Jetta Intermittent starting


check the the ignition switch plug on the opposite side of the ignition switch on the steering colum

Dec 03, 2008 | 2000 Volkswagen Jetta TDI

2 Answers

Wont turn over


OK - so it is not a Jetta 2000 TDI, which the heading at the top of my page here.

The only sensible way forward is to get a list of fault codes from the onboard diagnostic system and take it from there. You could either go to a VW dealer, or if you are technically minded you could buy a £15 interface cable, download some free "VAG diagnostic software" and run it on a portable computer.
If these suggestions do help you solve the problem, please give my reply a rating to help others judge my knowledge / guessing skills.
If they do not, please hold off on the rating and add a comment with more details so I can try to help you further. Cheers, D

Jul 12, 2008 | 2000 Volkswagen Jetta TDI

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