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Registered
1990 300CE-24, 2000 ML55, 2005 CLK320 Cabriolet
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142 Posts
Discussion Starter #1
This light just came on and then goes away very shortly. Oil level is correct.
I am assuming that the oil level sender is bad?
I think there was a very tiny oil leak there.
If the oil sender is bad, has anyone replaced it and can post some pictures?
how diffficult is it?
 

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Purple Moderator
99 ML430, 00 ML320, 05 E500 4matic Wagon
Joined
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22,126 Posts
I don't have the work shop info here, but if the sensor in the pan is bad it is a hard job to do.
I just found the document. It is attached.
 

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Registered
1990 300CE-24, 2000 ML55, 2005 CLK320 Cabriolet
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142 Posts
Discussion Starter #3
Thanks so much.
It is never easy on this ML55.
I have an engine hoist, so we'll see.
Barry
 

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Registered
1990 300CE-24, 2000 ML55, 2005 CLK320 Cabriolet
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142 Posts
Discussion Starter #4
I changed out the engine oil. Now I still get Oil Hi and then I get oil level light and also on the
dash it displays -2.0L.
The oil level is correct.
So, i am assuming that the sensor has gone bad??
am wondering is someone here can give guidance, if they have removed the oil pan
and had any issues or things that I need to watch out for.
Just finished replacing center bearing support on the shaft, replaced left front tie rod,
also replaced the inner boot of the CV joint.
Thanks
 

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Registered
1990 300CE-24, 2000 ML55, 2005 CLK320 Cabriolet
Joined
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142 Posts
Discussion Starter #6
I bought a sealant listed on autohausaz.com for the pan listed on their website.
I think it says made from Victor Reinz, I assume it is OK to use that instead?
Pl let me know what else I need to know.
Do you know the torque values for the pan bolts and also for tbe oil sender?
Thanks so much.
 

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Premium Member
02 ML320 06 ML500
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17,101 Posts
The pan bolts are 10Nm and the sensor torque is listed at the bottom of the instructions.
 

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Registered
1990 300CE-24, 2000 ML55, 2005 CLK320 Cabriolet
Joined
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142 Posts
Discussion Starter #8
oil level sensor trigger

The pan bolts are 10Nm and the sensor torque is listed at the bottom of the instructions.
When my 2000 ml55 is cold, I do not get the warning until I drive for like few minutes or so. I have always used Mobil 0w-40. Do you think if I switched to 15w-50 this oil sensor would not trigger this message? Has anyone tried a thicker oil?
 

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Registered
1990 300CE-24, 2000 ML55, 2005 CLK320 Cabriolet
Joined
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142 Posts
Discussion Starter #9
I thought not to replace this oil sender level sensor. I disconnected it.
As I thought, I get a low oil level light but no more of the Oil level high
or -2.0L. I have always used the dipstick and do not trust these sensors.
It is an hassle to drop the pan and do all that work for this sensor.
There are 3 wires on this connector that was disconnected.
I know if I ground one of the 2 wires, that should get the light off.
Does someone know which wires when connected to each other will
make the low engine oil level light go out? if someone has the electrical schematics,
i can figure it out.
Thanks a bunch.
 

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Registered
Dallas, Texas
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7,716 Posts
I thought not to replace this oil sender level sensor. I disconnected it.
As I thought, I get a low oil level light but no more of the Oil level high
or -2.0L. I have always used the dipstick and do not trust these sensors.
It is an hassle to drop the pan and do all that work for this sensor.
There are 3 wires on this connector that was disconnected.
I know if I ground one of the 2 wires, that should get the light off.
Does someone know which wires when connected to each other will
make the low engine oil level light go out? if someone has the electrical schematics,
i can figure it out.
Thanks a bunch.
It is oil level/temperature/quality sensor not a switch.

http://www.benzworld.org/forums/w163-m-class/1432866-oil-sensor-wiring.html#post3378029
 
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