Yellow Engine Diagnostics Warning Lamp
Discussion
I have a W211 220CDI E Class. Yesterday I (foolishly?) used a garden hose to wash the leaves from under the bonnet and around the bottom of the windscreen - with the bonnet up.
When I drove the car the yellow engine diagnostics lamp remained on and the engine was misfiring. The misfiring cleared, but the yellow light remains on.
Started the car a few times this morning, it seems to run ok, but the yellow light remains on.
Any ideas, please?
When I drove the car the yellow engine diagnostics lamp remained on and the engine was misfiring. The misfiring cleared, but the yellow light remains on.
Started the car a few times this morning, it seems to run ok, but the yellow light remains on.
Any ideas, please?
Scrump said:
It may go out after a few more miles or starts (it did on my wife’s car after a similar incident).
Otherwise buy a cheap OBD II tool and reset it yourself (assuming you don’t have one or know someone with one you can borrow).
I read somewhere that disconnecting the battery may clear the problem. Worth a try?Otherwise buy a cheap OBD II tool and reset it yourself (assuming you don’t have one or know someone with one you can borrow).
I thought I might as well try the 'disconnect the battery' thing to see if that worked. Got the toolbox out, took the cover off the battery, thought I had better check that the light is still staying on (the poor Mercedes only goes ou a couple of times a week). started the engine and
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The light went out and stayed out!!!
I can only think that my hosing under the bonnet had got water somewhere where it shouldn't be and took a took a while to finally dry out..
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The light went out and stayed out!!!
I can only think that my hosing under the bonnet had got water somewhere where it shouldn't be and took a took a while to finally dry out..
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