Oil Warning light on Merc

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Oil Warning light on Merc Empty Oil Warning light on Merc

Post by Lucyc1937 on Mon Oct 12, 2015 10:13 am

I have a 2010 AS Devon and had an oil change a few months back, now after running about 50 miles Oil light warning light shows too much oil, I have had the oil level checked but the light still comes on usually at about 60 mph or above. Also Coolant level going from MAX to MIN after about 100 miles, can anyone help or suggest what could be wrong. Only done 13000 miles.
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Oil Warning light on Merc Empty Re: Oil Warning light on Merc

Post by Peter Brown on Mon Oct 12, 2015 10:45 am

Straight to a Mercedes main dealer if it was me, sounds like coolant water getting into the oil circulation system.

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Oil Warning light on Merc Empty Re: Oil Warning light on Merc

Post by -mojo- on Mon Oct 12, 2015 10:46 am

If coolant is escaping into the engine oil you risk engine damage, so I would take it to a Mercedes service centre immediately and explain the problem.

Others with a detailed knowledge of that make of van may be able to suggest common causes, but in general (not Merc specific) possible causes could be failure in the water pump, failure of an oil cooler or failure of the head gasket in the engine. An approved service centre should be able to identify if it is the latter by testing the coolant and oil.

I would not drive it any significant distance in its current state.
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Oil Warning light on Merc Empty Re: Oil Warning light on Merc

Post by Lucyc1937 on Mon Oct 12, 2015 11:46 am

Thank you for your quick replies, I will post the outcome when and if solved.
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Oil Warning light on Merc Empty Re: Oil Warning light on Merc

Post by Jaytee on Mon Oct 12, 2015 2:10 pm

Good luck, hope it's something easy and not too expensive. peace

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Oil Warning light on Merc Empty Re: Oil Warning light on Merc

Post by PLOUGHLIN on Mon Oct 12, 2015 3:54 pm

Here is a thread from Sprinter Forum. [You must be registered and logged in to see this link.]

High Oil warning seems common. Best to keep level between max and add point,it seems.

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Oil Warning light on Merc Empty Re: Oil Warning light on Merc

Post by Lucyc1937 on Thu Oct 15, 2015 4:14 pm

Progress so far, Expansion tank on cooling system as a slight split causing water loss, Oil sensor being replaced, hopefully should be back on road by next Tueday.
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Oil Warning light on Merc Empty Re: Oil Warning light on Merc

Post by Peter Brown on Thu Oct 15, 2015 4:18 pm

Thanks for the update and it sounds more nuisance than serious.

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Oil Warning light on Merc Empty Re: Oil Warning light on Merc

Post by Jaytee on Thu Oct 15, 2015 4:20 pm

Fingers crossed a good result allthumbz

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Oil Warning light on Merc Empty Re: Oil Warning light on Merc

Post by Lucyc1937 on Thu Oct 15, 2015 4:37 pm

Could be around £650 or 850 including a full service
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Oil Warning light on Merc Empty Re: Oil Warning light on Merc

Post by Lucyc1937 on Thu Oct 15, 2015 4:38 pm

Oil Sensor is in Sump, hopefully problem might be over
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Oil Warning light on Merc Empty Re: Oil Warning light on Merc

Post by Lucyc1937 on Fri Oct 23, 2015 12:19 pm

Water leak from slight split in header tank only leaks when coolant is hot and split expands, New Header tank fitted, Problem fixed. Oil switch in sump replaced only a good run will show if this has worked.
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Oil Warning light on Merc Empty Re: Oil Warning light on Merc

Post by Peter Brown on Fri Oct 23, 2015 12:32 pm

Thanks for the update.

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