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mybenz | mysatisfaction Forum Index
   General talks about Benz
     Coolant - Check Level
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Poster Thread
Chongsh2838
Posted on: 2017/6/9 14:23
Not too shy to talk
Joined: 2015/5/24
From:
Posts: 32
Benz Model: w211 E270CDI
Message:
Coolant - Check Level
Hi ,

In my e270 CDI , recently i had an error appearing

Coolant - Check Level

When i checked in the coolant reservoir , the level is still at acceptable level. The error message dissapears after i topped up the water slightly and will re-appear after a few days but again water level is still good

I have replaced the coolant reservoir two years ago as there was a crack.

Any suggestions will be welcome

Chongsh2838
Posted on: 2017/6/11 13:30
Not too shy to talk
Joined: 2015/5/24
From:
Posts: 32
Benz Model: w211 E270CDI
Message:
Re: Coolant - Check Level
Btw,

I did a pressure.test and.it.looks.ok with no obvious leak

I also changed the coolant level sensor and to no effect.

Could it be the expansion unit pressure cap.
btusulu
Posted on: 2017/6/15 1:48
Not too shy to talk
Joined: 2017/5/18
From: sarawak
Posts: 26
Benz Model: W210, W211
Message:
Re: Coolant - Check Level
Hello Chong,

welcome to the world of 'confused' computer signal. I had the same 'complain' before. Apparently, the coolant level sensor shares the same wiring for the low washer fluid level sensor. Somehow or rather, any low washer fluid level can trigger a coolant - check level warning as well. My suggestion to you is to top up the washer fluid level until it is full. You may then stop getting the coolant check level warning. this works for 2 of my CDIs. hope it works for you.

btusulu
Chongsh2838
Posted on: 2017/6/17 1:47
Not too shy to talk
Joined: 2015/5/24
From:
Posts: 32
Benz Model: w211 E270CDI
Message:
Re: Coolant - Check Level
Hi , Thank you for advise and will check on that. At the same time , i have bypass the heating unit (not needed in Malaysia climate) water flow. Let me monitor the situation.

Chongsh2838
Posted on: 2017/7/2 8:44
Not too shy to talk
Joined: 2015/5/24
From:
Posts: 32
Benz Model: w211 E270CDI
Message:
Re: Coolant - Check Level
Hi ,

After monitoring for a while , looks like after changing Expansion Reservoir Cap . coolant level is consistent and no reduction.

Great News
mkskConsult
Posted on: 2017/8/7 11:47
Just popping in
Joined: 2017/7/29
From:
Posts: 1
Benz Model:
Message:
Re: Coolant - Check Level
Hi , I have the same problem but found water in the engine oil during service. It looks like a head gasket leak. My mechanic say that eventually I need a top overhaul but I'm thinking of using Copper Gasket sealer from CRC first. Did you try this before ?

Regards

Suren
Chongsh2838
Posted on: 2017/8/9 8:38
Not too shy to talk
Joined: 2015/5/24
From:
Posts: 32
Benz Model: w211 E270CDI
Message:
Re: Coolant - Check Level
Hi,

Mine was fixed with a new coolant cap replacement . There was no oil staints in the water
Chongsh2838
Posted on: 2017/9/2 0:15
Not too shy to talk
Joined: 2015/5/24
From:
Posts: 32
Benz Model: w211 E270CDI
Message:
Re: Coolant - Check Level
Hi,

Mine was fixed with a new coolant cap replacement . There was no oil staints in the water
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