Date registered: Dec 2004
Vehicle: CURRENT: 2011 SL550, 2002 C240 FORMER: 2007 CLK550 Cabriolet, 2001 ML320, 1984 300TD
Location: Birmingham, AL
Mentioned: 4 Post(s)
Quoted: 650 Post(s)
Yes, the mileage is stored redundantly, both in the cluster and the EIS, and if either one is replaced with a non-virgin part, so that the mileage is mismatched, you get "------" on the display. And since you asked, here's the logic, which is intended to prevent odometer tampering: There would be no point in storing it redundantly if all you had to do to roll-back the odometer is to replace one part with a used on from a lower-mileage car. If it requires a brand new, virgin part to be able to copy the mileage from the existing part, and you can only get that at the dealer, then it pretty much prevents odometer tampering, at least from the standpoint of the average person trying to do it. Yes, there are devices like the Engima that can do it, but the price of that equipment is usually not worth the small financial benefit of a lower-mileage car.