Shoe,
I just replaced the SOV with the one that Alastair sended me ( thank you ) and the ELC light came up like you... After 3 start it stopped tho? Not much help but it might be your SOV after all or the connections to it?
Olivier

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E300TD year 2000. RUSTY SOLD
cost a fortune to maintain on the road
but run well on WVO
Second Merc died due to corrosion ( NOT rust) How can mercedes get away with that for so long?
Third lasted a month then went away...
Fourth now... Corroded too...