ultrasonics

Hi,does anyone know if i can get hold of the ultrasonics with built in red led's for my 2001 CLK as the led's do not work anymore. I have been told that Mercedes dont stock them anymore and that i would have to remove them and replace with a microwave system.:dk:

I was doing a wedding shoot on Saturday, it was roasting so I left all the windows open with a small gap. I pressed the bottom of the ultrasonic/towing sensors and the flight flashed. I armed the car and the LED on the switch was blinking steadily (along with the LED on the stereo as usual)...