Turbine Speed Sensor(VGS)
 

Took my 2005 CLK500 in to get crank sensor replaced and found out my I may have another issue. The printout I received has- Cause: Component Y3/8n1(Turbine speed sensor(VGS)) is defective. Remedy- Exchange electrohydraulic control unit.. The service guy instructed my wife this may be covered by Mercedes even though car is out of warranty. Can anyone shed any light if this may be accurate?

Thanks