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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 December 9th, 2007, 09:13   #1
dbeeby
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Join Date: Jun 2006
Default immobilize immobilizer? (Car won't start... blinking icon)

Hello! My car was running fine last night and this morning. Later in the morning, when I tried to start it, the car would turn over and catch, but then die. The little "car and key" icon continues to flash on the dashboard, which means that the anti-theft device (immobilizer) is active.

I've tried the following:
- disconnect the battery and touch the leads together for 20 seconds
- open all doors (hood and trunk), close them all, reactivate the alarm
- try several keys (I have three keys that have been "paired" to this car)
- insert key in door lock, turn to left and hold, turn to right and hold, unlock.

Nothing is working and I can find no information on the Internets about how to disable the immobilizer. It's now at a service station in Brooklyn and will be looked at on Monday, but I fear that they're not going to do anything and I'll have to have it towed again to the dealer. Advice?

I posted a similar problem here, but didn't notice then if the immoblizer light was on or not. http://forums.tdiclub.com/showthread.php?t=151263
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Old December 9th, 2007, 17:17   #2
wrenchman30
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TDI(s): 2005.5
Fuel Economy: 43 best befor egr much better now
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take it to the dealer. the immoblizer stuff is very expensive and not a common repair place is going to pony up the dough for the key machines and software. to wire around it you will need a very good eletrical diagram and a electronics person.
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Old December 9th, 2007, 17:27   #3
SilverGhost
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Sounds like a key going to crap. And after you tried several tricks to get it started the Immobilizer locks down for a while.

When get cars in the shop with your symptoms most often we can get the key to work again, BUT it usually comes back for the same problem. How soon it quits again varies.

And of course every car acts a little different. One car will start the next morning. Another will start with a different key after a while. And then other cars won't start at all until the keys are reprogrammed.

Good luck!

Jason
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Old December 16th, 2007, 17:12   #4
dbeeby
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Default it was the immobilizer

I posted a long notice on my blog about the saga: http://beeby.blogspot.com/2007/12/m-...wice-last.html

Chittychittybangbang sent me an awesome link to myturbodiesel.com, which discusses the immobilizer in-depth. The "emergency start function" documentation sounds a little like it's a joke, but I'll try it if/when this happens again.

Thanks for the advice, folks.

D
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Old December 16th, 2007, 19:34   #5
weedeater
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If all the keys failed, then I would guess that the 'senso-ring' around the ignition switch went bad.
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Old December 17th, 2007, 07:37   #6
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I have found one trick that has got me into stuck cars (parking ramps) 4 times now.

Run the full scan on the car and when it's done hit the clear all codes button and start the car at the same time. I think, could be dangerous, since the imobilizer is "busy" it ignores the start and the car runs. I then suggest the other fixes.
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Old June 17th, 2011, 12:20   #7
tommys69
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Join Date: Dec 2007
Location: hickory,nc
TDI(s): 2002 beetle
Fuel Economy: avrg 45mpg
Default Keys Won't Work

Went to crank my 02 beetle and the immobilizer won't let it crank. Tried all 3 keys it came with and same thing. Used the suggestion of unhooking and touching 2 battery cables together and this fixed my problem. Car cranks fine and has for 2 days now. This is a very easy fix that the dealership would probably charge you several hundred dollars to preform not counting tow charge. Thank ya'll very much for all the inciteful diagnostics in this forum. Volkswagen should put stuff like this and the anti-shudder valve issue in owner's manual.
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Old June 17th, 2011, 12:51   #8
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Quote:
Originally Posted by jasonTDI View Post
I have found one trick that has got me into stuck cars (parking ramps) 4 times now.

Run the full scan on the car and when it's done hit the clear all codes button and start the car at the same time. I think, could be dangerous, since the imobilizer is "busy" it ignores the start and the car runs. I then suggest the other fixes.
I did this but quite by accident and it worked....just on a whim I auto scanned and cleared and then car ran...but I still sent the ecm to Jeff to have the immob deleted
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Old August 29th, 2012, 20:56   #9
TDIHolic
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I just had the same problem activating the immobilizer using the wrong key on my 02 Jetta. The 15 minutes wait worked fine, but only after I kept the key on the ignition all the time until the immobilizer light stopped blinking and went off completely. Also, I had to have a battery charger connected to supply the needed voltage to keep the system on during the process because my battery was too weak. If you don’t have an alternative power supply, try removing the headlight fuses to reduce the battery draining.
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Old August 30th, 2012, 06:42   #10
Ruffrida
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Default

Quote:
Originally Posted by dbeeby View Post
Hello! My car was running fine last night and this morning. Later in the morning, when I tried to start it, the car would turn over and catch, but then die. The little "car and key" icon continues to flash on the dashboard, which means that the anti-theft device (immobilizer) is active.
I've tried the following:
- disconnect the battery and touch the leads together for 20 seconds
- open all doors (hood and trunk), close them all, reactivate the alarm
- try several keys (I have three keys that have been "paired" to this car)
- insert key in door lock, turn to left and hold, turn to right and hold, unlock.
Nothing is working and I can find no information on the Internets about how to disable the immobilizer. It's now at a service station in Brooklyn and will be looked at on Monday, but I fear that they're not going to do anything and I'll have to have it towed again to the dealer. Advice?
I posted a similar problem here, but didn't notice then if the immoblizer light was on or not. http://forums.tdiclub.com/showthread.php?t=151263
Not sure it is the same as the 8L A3 but i had this and it turned out to be broken clocks / instrument cluster, you can turn the immo off with vag-com but not idle as it will start with ANY key
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