unplugging m177 oil solenoid




The engine oil pump solenoid CONNECTOR has been located.
It's at 7 O'clock from crank balancer pulley where we're used seing it.
Unplugging the solenoid is the first step to prevent low oil pressure that burns the oil into black carbon deposits.
The second step is to improve engine oiling:
- 5kMi max (not 10k minder)
- higher viscosity = piston cooling
- better oil specs (PAO or Ester)
Unplugging solenoid has limited results due to limited viscosity. The only way to get pressure is slightly higher viscosity!
The point being that unplugging solenoid does not much magic by itself.
Its what you do afterwards that makes a difference...

Last edited by CaliBenzDriver; Mar 8, 2025 at 02:17 PM.
The Best of Mercedes & AMG




- cancel lean laggy acceleration
- drop extreme engine heat soaks,
- prevent VVT rattle
- prevent CPS oil-in-harness
- cancel banging tranny shifts
- enable pressure sensitive throttle
- ...

Last edited by CaliBenzDriver; Jul 2, 2025 at 06:23 PM.




You're all set unless you recognize....:
- LAGGY THROTTLE pick-ups,
- high heat,
- burnt oil
- sloppy shifts
- low oil pressure
- low chassis voltage
Its up to you to decide what you want to personally experiment with.

Last edited by CaliBenzDriver; Jul 2, 2025 at 09:21 PM.
hi, I am a G63 2021 owner and yesterday my car had a CEL, I checked by computer and got the fault code "P06DA00". I want to know if this malfunction will affect the normal operation of the engine. Because my M177 is on the G63 chassis, if the oil pump solenoid valve needs to be replaced, many parts of the front axle have to be disassembled. I don't want my car to be torn apart. I wonder if it is necessary to be replaced or not? Can the CEL be made to disappear by blocking the fault codes?
Thanks a lot!
Thanks a lot!
Ask there.
Thanks a lot!
No need to unplug [the solenoid]. I got CEL P06DA00 for solenoid wiring failure, got tuner to code it out. Car runs fine (2020 c63), oil pressure is stable. But do your own research. Any remote tuner would be able to code out the CEL (PTG, ECC Tuned, etc.). I personally went through Weistec because they have an authorized dealer local to me. He was able to do it in minutes. https://www.weistec.com/storelocator...6mKK023Z7PX_Cf
No need to unplug [the solenoid]. I got CEL P06DA00 for solenoid wiring failure, got tuner to code it out. Car runs fine (2020 c63), oil pressure is stable. But do your own research. Any remote tuner would be able to code out the CEL (PTG, ECC Tuned, etc.). I personally went through Weistec because they have an authorized dealer local to me. He was able to do it in minutes. https://www.weistec.com/storelocator...6mKK023Z7PX_Cf
Thanks!
No need to unplug [the solenoid]. I got CEL P06DA00 for solenoid wiring failure, got tuner to code it out. Car runs fine (2020 c63), oil pressure is stable. But do your own research. Any remote tuner would be able to code out the CEL (PTG, ECC Tuned, etc.). I personally went through Weistec because they have an authorized dealer local to me. He was able to do it in minutes. https://www.weistec.com/storelocator...6mKK023Z7PX_Cf
Thank you for your reply! This is really helpful to me. This fault is not common in China. When I search for this fault on search engines in my country, there's very little information. Many repair shops say this fault is fatal and must be replaced. I think they're making such comments to make money. Now I've decided to ask a tuner to code the CEL. Thank you!
You do not have to code the CEL, you check the oil pressure, confirm the oil pressure is good and then install the dummy solenoid outside of the engine. https://mbworld.org/forums/w212-amg/...ml#post9203776


