I removed the tele-aid myself without reprogramming the cluster. I simply disconnected the box in the trunk. You'll need either skinny arms or a high pain threshold. The box is on the driver's side basically above the wheel well. At the same time I also removed the button, disconnected the wires and put the button back in. This was on our 2000 E320. The display doesn't show any errors any more
-Tad