My check oil level comes on all the time?
Last edited by mattty; Nov 8, 2006 at 12:24 PM.

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Last edited by mattty; Nov 8, 2006 at 02:11 PM.

How many miles are on the car?
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In the first year of owning, I would get those 'check engine oil level now!' warnings. There would also be the 'perform service now' messages as well.
I'd check the dipstick and it was correct level (engine never requires oil to be added-ever).
It was a bad oil level sensor - after that, never had the message appear again. They do fail - the dealer should be able to pull codes that record the history of those occurances.
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I have a CLK with the 3.2L V6, so it would be in different locations if you have the 4 cylinder engines (1.8L or 2.3L for example). The 3.2L engine has it on the front passenger side, between the cylinder head and the centerline of the engine as an example.
My oil sensor was replace under warranty, so I don't know what that part costs or the labor charge. On the V6, its bolted into the engine block above the oil pan - but I've not changed the part myself.
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It happened couple times when I was driving on the freeway. A beep on the dash and a warning messgae came up.
Both times I stopped the car, checked the engine oil. The oil was clean and full. I started the car again and the warning message was gone.
I agree that it could be a bad oil sensor? I have heard stories like that before.
The warning message is a bit annoying, I am going to have the dealer pulls the code next time I service the car.
Anyone have the similar problem on their W203 2.5L-V6?
With best regards,
) that allows you to check your oil level down to .1 quart graduations by accessing a special/diagnostic screen. Although our engine holds 8.5 quarts mine show 7.6 quarts after a change when I know I've put 8.5 quarts in. I don't think it includes what's in the oil filter.







