You ask... >Is there anyway to test this sender out of the car. I don't know. But why do you think it needs to be tested? Are you aware of the common cause of speedo malfunction on these cars due to bad solder joint on the circuit board? Audi's TSB (scanned image) re: this problem is posted on Mr. Steinbru's website at... http://www.geocities.com/MotorCity/5614/tsb01.gif Dave C.