M-Class (W166) Produced 2012-2015

ML350 BLUETEC any experience resetting values of Hot Film Management Engine drift

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Old Mar 16, 2025 | 09:50 AM
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ML350 BLUETEC any experience resetting values of Hot Film Management Engine drift

Hi, My 2014 ML350 BLUETEC has some stored DTC's 100C00 and 100E00 relating to the hot film mass airflow sensors. Iintend to replace the MAF unit. After the replacing I am unsure if I will need to "reset the values of the Hot Film Management Engine drift compensation" ?.
Any experience or advice or information would be greatly appreciated.

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Old Mar 16, 2025 | 11:06 AM
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S T O R E D !!

How about not replacing good parts...

PLAN B:
--1-- Why not simply reset all these faults and float your main battery to full.

--2-- Then scan to see what comes back.

I know that transient faults come right back as STORED without ever being CURRENT.
Lets see...

Last edited by CaliBenzDriver; Mar 16, 2025 at 11:07 AM.
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Old Mar 16, 2025 | 11:22 AM
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Before I buy parts

Thanks for your suggestions STORED. Can I confirm
- dont start replacing parts
- clear all DTC's (stored and current) and see what returns ?
- you mentioned something about the battery ?

Cheers
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Old Mar 16, 2025 | 01:27 PM
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Originally Posted by FunEddy
Thanks for your suggestions STORED. Can I confirm
- dont start replacing parts
- clear all DTC's (stored and current) and see what returns ?
- you mentioned something about the battery ?

Cheers
Yes, you got it!

About battery voltage:
use a good automatic charger to recondition it. It may be what is causing all these false faults.
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