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Pentoman is right, it's the control panel for the aux heater (Webasto heater). The Webasto heater is a gasoline powered coolant heater. It can be programmed when to come on with this panel.
It differs from REST function of the climate control in that REST function is used with a warm engine, it circulates the already warm coolant and operates the climate control fan.
We have a customer with a 124 chassis gray market or Canadian car with the same thing.
Gilly
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