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Volkswagen Jetta Security System

36 messages,  Last post on Apr 17, 2012 at 12:51 PM

You are in the Volkswagen Jetta Forum.

What is this discussion about? Volkswagen Jetta, Security System, Sedan

Messages Page 2 of 4

#7 of 36 Re: My alarm system wont chirp! [jeffyscott] by bpeebles

Oct 05, 2007 (5:29 pm)

Replying to: jeffyscott (Oct 05, 2007 6:42 am)
I assume that when all doors are locked the alarm is set...is that correct?
 
Actually - I beleive that all the doors can lock and the alarm may NOT be set.
 
The way to KNOW that the alarm is "armed" is to see the blinking indicator on the top of the drivers door. (The A4 vehicles have the indicator there... your A5 may have it in differnt location.)

#8 of 36 Re: My alarm system wont chirp! [bpeebles] by jeffyscott

Oct 06, 2007 (4:16 am)

Replying to: bpeebles (Oct 05, 2007 5:29 pm)
Perhaps that is a programmable option . The red light does blink on ours after locking with one press on the remote.
 
I checked and our manual says:
 
"Activating the alarm system - Lock the vehicle"

#9 of 36 Re: My alarm system wont chirp! [jeffyscott] by bpeebles

Oct 09, 2007 (4:15 pm)

Replying to: jeffyscott (Oct 06, 2007 4:16 am)
Yes it is "programmable" option. Anyone with a VagCom can change it for you.

#10 of 36 vw jetta anti theft system by seven7291

Nov 06, 2007 (10:41 am)

how do you bypass the anti theft system so it will shut it off and i can start my car.please help me

#11 of 36 2000 Jetta TDI Security System by wayneswirld2

Nov 21, 2007 (11:15 am)

Recently bought a 2000 Jetta TDI. Installed new battery thing morning due to the fact that the car had been sitting for several months wihout one in it. Engine spins over fine and starts for about 2 seconds, then promptly dies as if you cut the engine off yourself. There is a light flashing on the dash that looks like the outline of the car with a key in the middle of it...I'm guessing it is a security system light. Any ideas on how to reset the security system? I also need ot know how to get the security code for the radio...Thanks for any input you may have.

#12 of 36 Re: 2000 Jetta TDI Security System [wayneswirld2] by bpeebles

Nov 21, 2007 (7:51 pm)

Replying to: wayneswirld2 (Nov 21, 2007 11:15 am)
A dead battery in any modern vehicle is bad news. (as you have discovered)
 
If you are lucky, a previous owner has written the battery code in the ownersmanual. If not, then you need to pull the radio and get the serial # from it.... and VW dealership can decipher the code from that.
 
----------
 
Now - as for starting and immediatly quitting. You are correct in assuming that it is the "immobilizer" which behaves like that. This is NORMAL for the immobolizer to 'forget' the SKC (Secret key Code) if the vehicle is not started for several months.
 
The security system on VW is based on the Mercades-Benz design which is nearly impossible to bypass. (You car cannot be stolen by starting the engine!) You MUST use a key which is both cut correctly for the keyhole and satisfies the immobilizer built into the dashboard electonics. (simply cutting a key to fit is not good enough)
 
Some people with your problem have reported that they left the key in the ignition with ignition on for about 10 minutes.... and the immobilizer light was now extenguished. They could then start the engine.
 
Others have reported that the computer needed to be "rebooted". I am not sure what that means
 
There is a very slight possibility that the reciever (ring around the ignition key-hole) is defective.... but that is the best advice I can give you.
 
There is a way to temporarrly "bypass" the immobilizer. There is a step-by-step procedure which involves using the tripmeter to input a secret code into the computer. The secret code is provided by a VW dealership with the following prerequsets;
*)Customer must provide proof of authorized vehicle operation/ownership with vehicle documents and identification.
*)Key tag with covered secret number is available.
*)Mechanically correct key available.
 
Perhaps your problem with starting and staying running is NOT the immobilizer at all. Perhaps you need to check for airleaks in the fuel system. Sitting unused for several months may have dried out the seals in the injector pump so it is sucking air.

#13 of 36 Emissions Malfunction? by mexjetta2000

Dec 30, 2007 (6:20 pm)

I am in the middle of a 2,500 mile road trip and today while on the freeway heard and felt a huge bang or knock on the drivers side of the car, then noticed when I pulled over that the MIL (malfunction indicator light) was on. I understand this relates to the car emissions system - is it something I should have fixed immediately, or can I complete my trip without damaging the car and take it to a reputable repair shop where I live?

#14 of 36 Re: Emissions Malfunction? [mexjetta2000] by pat

Dec 31, 2007 (10:18 am)

Replying to: mexjetta2000 (Dec 30, 2007 6:20 pm)
Your other post is better placed - let's ask anyone who can help to respond at this link: mexjetta2000, "Volkswagen Jetta Maintenance and Repair" #5517, 30 Dec 2007 5:26 pm. You also may want to click on the new Answers System feature linked at the top of the page and ask there.
 
Good luck!

#15 of 36 2000 Jetta GL Security by springob

Oct 29, 2008 (9:17 am)

I have a 2000 Jetta and the deactivating sensor for the security in the door lock seems to be bad. When locking or unlocking with the key, the security turns on but rarely turns back off, causing the horn to honk for 30 seconds or so when I start the car. The Keyless is not working either, I replaced the batteries in the key fob but that wasn't it.
 
I'm wondering, to avoid paying for a new lock sensor, is there a way I can just disable the alarm? I've heard that the alarm unit is behind the light switch in the dash.

#16 of 36 Re: 2000 Jetta GL Security [springob] by bpeebles

Oct 29, 2008 (7:20 pm)

Replying to: springob (Oct 29, 2008 9:17 am)
In your 2000 Jetta (MK IV), the doors have several micro-switches in them which detect various things like "door open/closed, locked/unlocked...etc". These switches can go bad and send unexpected signals to the security system. (like the door is locked and unlocked at the same time!)
 
One can often detect which door has the troublesome switch with a VagCom. Unfortunatly, to get at the switches, the entire guts of the door need to be taken apart.
 
I realize this does not answer your question... but thought you may wish to know more about the problem you are encountering.

Messages Page 2 of 4

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