M-Class (W166) Produced 2012-2015

Service A Reset?

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Old Dec 17, 2012 | 02:04 PM
  #1  
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2012 ML350BT
Service A Reset?

Hi All,

I just had my first service (A) done at my dealership. I had about 15K Km on my vehicle. I noticed before leaving dealership that the service indicator was reset, and showed next service (B) at 15K.
When I arrived home and checked again it showed 11K? I don’t know why it jumped down 4K in a short half hour drive home.
Do you think I should try to reset it again myself?

Thanks in advance!
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Old Dec 17, 2012 | 02:16 PM
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His 2019 RAM Cummins Turbo Diesel Laramie; Her's 2007 ML320 CDI P3; Mine BMW R1200R
It calculates the mileage left based on certain parameters programmed into the ECU, not just the actual mileage driven. Stop and go city driving, towing, driving style and also how much money is left in the dealerships bank account.
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Old Dec 17, 2012 | 02:44 PM
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From: Vancouver BC
2012 ML350BT
It's odd why it would drop so drastically within a half hour of driving, dropping 4K? I'm going to reset it again, since I just got the service done yesterday.
I believe the norm service between intervals is about 15K for both Service A & B.
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Old Dec 18, 2012 | 12:30 PM
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2014 E350 4matic Designo, 2014 ML350 4matic Sport, 2013 Cls550
Originally Posted by Vancity
It's odd why it would drop so drastically within a half hour of driving, dropping 4K? I'm going to reset it again, since I just got the service done yesterday.
I believe the norm service between intervals is about 15K for both Service A & B.
Hi Vancity, Would you be able to let me know how you reset the service indicator on your ML. Took mine in for a 12K oil change at my regular guy and for some reason he wasnt able to reset the service A indicatior as he does in all my other Benzes. Any tip in the right direction would be greatly appreciated.
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Old Dec 18, 2012 | 01:11 PM
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Originally Posted by Vancity
I'm going to reset it again, since I just got the service done yesterday.
I would try leaving it and seeing if it starts going up again. I think it will average out after a while.
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Old Dec 18, 2012 | 01:26 PM
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Originally Posted by JDBKLYN89
Hi Vancity, Would you be able to let me know how you reset the service indicator on your ML. Took mine in for a 12K oil change at my regular guy and for some reason he wasnt able to reset the service A indicatior as he does in all my other Benzes. Any tip in the right direction would be greatly appreciated.
instructions can be found here

http://oilreset.com/index.php?mf=53&mm=M-Class
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Old Dec 18, 2012 | 04:22 PM
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Here's another way from the mbusa website.

https://www.mbusa.com/mercedes/owner...007c184335RCRD
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Old Dec 19, 2012 | 01:11 AM
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Thanks a million guys! Did it in 2 minutes!
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