I've looked at several gasser Klima relays in junkyards; they are definitely different from the diesel variety. Remember that "Klima" is simply a brand name, they build on contract whatever Mercedes wants. We have no idea what a relay labeled "Klima" in any particular car is supposed to do without access to the FSM for that car. It probably has something to do with the climate control system and its interface with the engine but there are no guarantees. Brian is absolutely right -- if you cannot fix your Klima, don't even think about modifying someone else's.

Jeremy

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"Buster" in the '95

Our all-Diesel family
1996 E300D (W210) . .338,000 miles Wife's car
2005 E320 CDI . . 113,000 miles My car
Santa Rosa population 176,762 (2022)
Total. . . . . . . . . . . . 627,762
"Oh lord won't you buy me a Mercedes Benz."
-- Janis Joplin, October 1, 1970