Mercedes switches

Hi folks,
There are two switches (with a red light to show they are on) on my 2014 Bourton. They are below the left hand side of the steering wheel. What do the do? I know I may be being a bit dim but have no idea what they are for!

I assume you cant find them in the hand book. I think if you contact your dealer or a Mercedes commercial dealer they should be able to help.

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Are these the switches you are referring to? If so you will see there are quite a few different options so it depends on what A/S specified. Perhaps a call to Mark at A/S may help.
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Select At a glance then look at no. 18

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What symbol do they show. Could be Auxillary heating and heating booster? pg 29 Switch units in manual, page no may vary. See Peter Brown's thread [You must be registered and logged in to see this link.]