2011-2015 Mercedes-Benz ML350 Oil Service Light Reset Guide (W166)

Hey there, Benz fam! Today, I will show you how to reset the Mercedes-Benz ML350 (W166) oil service light. Service A, or Service B, whichever one you have. Each of those represents a different service. You can Google what a Service B is, what is a Service A for.

You have just to change the engine oil for some of them—some of the oil, cabin filter, air filter, stuff like that. So we’re here to help you to reset and find service data on your Mercedes-Benz ML350 W166. So let me guide you through the procedure.

2011-2015 Mercedes-Benz ML350 Oil Service Light Reset Guide (W166)

Time needed: 3 minutes

Alright, I’ve finished servicing my Mercedes-Benz ML350, and now I’m just going to go through the Assist Plus menu and reset the service light. So the first thing I will do is:

Turn the ignition key to position 1 without starting the engine
First, you need to turn your ignition to position one by a single press on the ignition button
Make sure the TRIP MILAGE is displayed
Then you’re going to scroll up on the button until you come across to where it’s talking about miles
Press and hold the ACCEPT CALL button and then press the OK button
With the mileage showing on the dash you’re gonna press the Call Answer button first and then the OK button until you get to your service mode
Get to the ASSIST PLUS
Once the service menu pops up, you’re going to scroll down using the ▼ button to Assist Plus and click OK
Go to the FULL SERVICE and then CONF FULL SERVICE
After that, you’re going to click scroll down and select FULL SERVICE and you’re going to click on the CONF FULL SERVICE
Select appropriate OIL GRADE being used
Now it’s gonna ask this about oil grade and you just do YES
Select CONFIRM
Finally, you would click CONFIRM then it’s done

So that’s how you reset on this Mercedes W166 (2011, 2012, 2013, 2014, 2015 model years). Now you can start the vehicle, and as you see, no more service message appears on-screen, guys. If you have any questions, just leave them in the comment section, and I’ll be glad to answer. So thanks for reading and good luck!

Nick

Hi! Greetings, I'm Nick, an automotive technician and a vehicle enthusiast with over a decade of experience working at a dealer service station. I have extensive knowledge of engine oils and lubricants and have helped countless customers maintain their vehicles. As an editor and author of articles on automobiles, I draw on my personal experience and professional training to provide readers with accurate and reliable information. I am passionate about sharing my expertise with others and helping them make informed decisions about their vehicles.

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View Comments

La Viphakone says:

October 11, 2016 at 5:13 pm

Please help me how to reset "Service B Exceeded by 500 mi" on my 2015 Mercedes ML250 Bluetech. I was able to get into "ASSYST PLUS" but no option to any after that.
Thank you
La