You might consider starting a new topic on the response from the dealer regarding the Control Units.

Were they suggesting the computers needed replacement?

As mentioned earlier, you should check to make sure this car had the harness replaced along with the leads to the ETA's. Its likely its been done if the car was well cared for but one can never be too sure.

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Brian G.

1994 E320 Wagon with many warts SOLD
1995 E320 Wagon with a beauty mark or two FOR SALE