Red Knob in engine bay
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Red Knob in engine bay
What is it?
On my 2013 SL550 under the hood, there is a red knob with the numbers 1 & 2. It's in the left rear near the washer fluid refill lid. It isn't shown in the paper or digital operators manual.
Thanks
On my 2013 SL550 under the hood, there is a red knob with the numbers 1 & 2. It's in the left rear near the washer fluid refill lid. It isn't shown in the paper or digital operators manual.
Thanks