Switch blade key questions

[Ti Kan]

Tony Lum writes:
> I'm new to these high tech keys and have a couple questions:

The following answer pertains to your 2001 A4, which I think has
no immobilzer feature.  The later "smart" keys may differ.

> 1. If the batteries die, does the key lose its programming?

If you're talking about the battery in the key, yes.  You'll
need to make the car "adapt" to your key so that the remote control
works again.  You can do it yourself.  See below.

> 2. What's the red button on the side for?

It's a "panic" button and sets off the car's alarm.

> 3. I've only got the one key, what's the best way to get another?
> Dealer? Local locksmith?

Dealer is one option ($$$), _some_ aftermarket sources may be able
to make you a replacement but AFAIK they must have access to the
VAG key database and be able to program the key for your car.
This is a different level of programming than the key battery
case.

> 4. Can you program the key yourself or does the dealer have to do it?

For the simple case of re-adapting the car to your key's remote control,
after the key battery is replaced, all you need to do is to unlock the
car with the key at the driver's door handle lock cylinder, turn on the
ignition and then and turn off ignition.  That's it.  The key's remote
should now work.

-Ti