Tag Archive for: Immobilizer

Volkswagen Immobilizer Key

This situation happens about once a month.

Volkswagen Immobilizer Key

This is where the reader coil is located, just around the key hole.

Customer calls in saying they lost the key or keys for their VW. We tell the customer they will need to show proof they own the vehicle. Then they will need to have the car towed to the dealer.

Once the key comes in, we will have to program the new key to the car. The cost of a new Volkswagen key, remote, and programming is about $300.

So why the heck does getting a new key for a Volkswagen cost $300? My guess is the little mechanism that lets the key flip out is made of some top secrete element. Maybe a derivative of Turbonium? Okay, obviously that is not the case. Before we talk about why it costs so much, let’s talk

about how the system works.

Immobilizer

All VWs, and most every other newer car, are equipped with an anti-theft device that will prevent someone from “hot wring” the car. Volkswagen calls this system the Immobilizer. The car must see an authorized key, or it will not start. Well, on a VW, it will start and immediately shut off. ~FREE TIP, if your Vw start and shuts off right away, odd are you have an issue with the immobilizer system.

How It Works

There are 3 main components to the immobilizer system

  1. The vehicle’s key

    Volkswagen Immobilizer Key

    This is what the actual transponder looks like

  2. A “reader coil”
  3. An “evaluation unit”

The vehicle’s key has a chip inside of it called a transponder. It looks like a glass tic-tac. When you put the key into the ignition, the “reader coil” will energize the transponder in the key. Then the transponder will send a code back to the coil and on to the evaluation unit. If everyone is authorized, the evaluation unit will authorize the vehicle to start. If not, the car will start, or it will not stay running.

The Cost

Now that we know how the system works, let’s get into the cost. Anytime there is electronics in something the cost will go up. These new keys are not like the old ones you could get cut at the local Ace Hardware. Also, most newer keys have the keyless entry remote built into it. That will bring the cost up.

The keys and remotes also need to programmed to the car, adding a little more to the cost. That requires the vehicle to be at the dealer. When I program keys, I have to hook up the VW scan tool. Then we go online and retrieve the proper coding for the car. I don’t get to see the code anymore, it is loaded right into the car. Each key for the vehicle will need to be programmed to work properly.

Is It All Worth it?

Is going to all this trouble to prevent vehicle theft worth it? I think so. It will deter amateurs from stealing cars. But let’s face it, if someone really wants to steal your car, they will steal it no matter what you do.

I also have another tip. The keys that you find on Ebay, or that weird store in the mall are JUNK! I would say that ~95% of the keys that customers bring in to be programmed do not work. It stinks for them because they don’t really save any money. It usually ends in the customer paying twice for programming, or buying a key from the dealer anyway. Just be cautious when dealing in non factory keys.

If you remember what “Turbonium” is, post it in the comments. I am wondering if everyone knows what it is.