The switchblade key available with the 1998 Audi A4 is stylish, durable and expensive, But these keys can be replaced and reprogrammed if they are misplaced or stolen. Understanding how to reprogram the Audi switchblade key can eliminate the need for a stressful and expensive trip to the dealership, saving you time and money.
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Insert the spare key you do not wish to program into the ignition. Rotate the key one notch to the right, placing it in the accessory position. In this position, electronic functions including the car stereo, CD player, and interior lights should have full operational power. This key will stay in the ignition until the end of the process, and must not be removed until that point.
Roll down the driver's side window until it is in the fully open position. This is to ensure you have a way to enter the car if the door locks cannot be electronically opened from the outside.
Close all of the car's doors and stand outside of the vehicle. Insert the other key into the door handle lock and rotate the key to the right to lock the doors. The vehicle's front and rear turn signal lights will flash once simultaneously and the horn will honk once to indicate that the locks have engaged.
Press the unlock button on the exterior key. The front and rear turn signal lights will flash twice to indicate the vehicle's locks have disengaged.
Lock the vehicle again using the lock button on the exterior key. Unlock the vehicle one final time using the unlock button on the exterior key. Remove the key from the external door lock and open the door. Remove the other key from the ignition.
Test the functions of the reprogrammed key by pressing the lock and unlock buttons. For safety and antitheft purposes, once one key is programmed, the other will deactivate. Only one switchblade key can be active at a time.
Tips and warnings
- This procedure is equally effective on any Audi A4 produced from 1996 to 2001.
- You cannot use the plastic valet key in this process. You must use two Audi switchblade keys for the reprogramming procedure to work.
- On a windy day, the vehicle's interior motion sensor may trigger the alarm when the window is down. You can either turn off the sensor by pressing the small black button on the pillar between the front and rear seats on the driver's side of the vehicle or you can perform the process in an area without wind.
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