Mercedes S Class Service light reset W221

How to Reset the service light on Merc S class S350 W221 2012 model.

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[rosshoward]

For some time I've been trying to clear my service notification but to no avail. Finally by following your detailed instruction it did the trick ! Many thanks,

[SeanPGribbons]

Excellent video many skip a lot of the important steps you mention

[kampalalion]

Thank you done my service/& reset light

[S_B_S]

I had adbkue warning come on or engine not start in 487 mike's have added adbkue. Do you know if I need to reset anything else? I have s350cdi bluetec 2012. Thanks.

[fatih.sultan.mehmed.]

Reset for adblue on Mercedes w221 bluetec please....

[dhulfiqaralobaidi]

When i press ok it asks me if i wanna reset my meter 😪, tell me what to do

[johnhardaker]

I see you have the engine management light on. I have this problem as well. In my case it seems to be a flap valve controller located in the 'V' of the engine. Mercedes part number A642 150 04 94 Q2. I am advised that Mercedes spares has one for £184. However I am told it is a very difficult job, which many mechanics will not touch. I am living with it as I have no idea what this valve does and everything seems to be fine. I have the Service list shown and you seemed to select the bottom one. I do not know what this list means.