The ECU is under a cover under the carpeting in the passenger footwell.

But just for grins, remove the under-dash cover on the passenger side and look at the relay farm above the fuse box. You should see a relay with a fuse on its top under a plastic cover. Make sure that the fuse is good.

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Chuck Taylor
Falls Church VA
'66 200, '66 230SL, '96 SL500. Sold: '81 380SL, '86 300E, '72 250C, '95 C220, 3 '84 280SL's '90 420SEL, '72 280SE, '73 280C, '78 280SE, '70 280SL, '77 450SL, '85 380SL, '87 560SL, '85 380SL, '72 350SL, '96 S500 Coupe