Flat battery this morning.

damoaxcell

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This morning i went to unlock my W reg Mercedes CLK 200 with the key fob, nothing happened. It turned out that my battery had gone flat over night. I didn't leave lights switched on or anything like that, and I've had no wiring done, for example a car stereo. I've managed to get the car jump started now. But now I've had a load of warnings thru on the board computer. One saying "Engine Fan Visit Workshop" and another BAS/ESP. Also the engine fan is coming on as soon as I start the engine, and isn't switching off at all after the engine is switched off. This has never happened the whole 6 month I've owned the car. Is it just a case of the computer has become all messed up because the battery has died or should I be asking why it went flat in the first place? Any kind words of advice?
Thanks
 

television

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Hello and welcome, the fan ECU will have water in it, if you follow the wires from the fan they go down to the right side front, just behind the bumper,,it is just there.

It is also possible that water is under the front SAM in the box with 2 lids
 

anyweb

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drive it around for 40 minutes and power off, then wait a couple of minutes and see what it says if anything,

you could have three possible issues, a dying battery or dying alternator (brushes need replacing perhaps) or something is using your power (are you sure the lights weren't left on ?)
 

Miffy

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the BAS/ESP error should go once you have turned the steering wheel lock to lock, thats normal after a power loss. The battery drain could be a long drawn out affair involving you checking the current loading on the fuses after the can has entered sleep mode. Others may have better info but I think a visit to a Star machine coulld be in order to see whats gone wrong
 

WG M-B

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Either you still have a low voltage issue or.........
There is a fuse blown in K40 relay.
Open the bonnet. On the passenger side toward the rear of the engine bay you will see a plastic cover held on by several Phillips screws. Underneath this lies the K40 relay with it's fuses built in. It's possible one has blown.
Be sure to check battery voltage is ok whilst car is running first
 

television

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then again, read malcolms reply ! heh

We used to get this one up many times some years back but all been quiet lately. We had the same post last week on another 202.

I have the papers on it that I can send out

The fan running all the time is the clue here and the cause of the drain
 
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damoaxcell

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At the risk of sounding dumb, is the radiator fan and the ECU fan two different things? What's a SAM? Will this solve all the other warning as well as the "engine fan visit workshop"?

Thanks Damo
 

television

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If the rad fan is on all the time then just the water in the fan ECU control unit, and a well known fault.

Ignore the other messages as these come up after a flat battery.

The SAM is an electronic stage system, its in the box with 2 lids, you may need to lift it to see if there is any water in the bottom, if there is there are modified lids and seals now.

I can send you 2 papers on this fault
 

WG M-B

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Engine fan visit workshop
I should read posts correctly before replying:Oops:
 
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damoaxcell

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Thanks very much to all of you. It's hard to get good advice. I will let you if that sorts it all out. And the two papers you have, did you want to e-mail them?

Thanks Damo
 
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damoaxcell

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Yes sorry, engine fan. I'm getting my self confused now. Can you tell I'm not all that clued up with cars? :p
 

television

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Thanks very much to all of you. It's hard to get good advice. I will let you if that sorts it all out. And the two papers you have, did you want to e-mail them?

Thanks Damo

your address please you can edit it out soon
 
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damoaxcell

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Is there anyway I can private msg you, as I don't feel comfortable giving that information out publicly.

Thanks Damo
 

television

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If you pop it up here now, you can remove it in edit in 5 minutes time,,, I go to bed at 10.45
 
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damoaxcell

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Oh and just a quick note, I've stopped the fan by taking the fuse out. Will that cause any problems?
 
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television

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Not while standing, but could get too hot when driving, its more for air con than anything else but does act as a safety fan in very warm conditions
 
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damoaxcell

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The air con doesn't work, think it needs looking at. But wouldn't use it as I'm a tight sod and wastes fuel. You get the address?

Damo
 

television

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Oh and just a quick note, I've stopped the fan by taking the fuse out. Will that cause any problems?

Sorry not that address, edit it out and pop up your Email address for a few mins
 

television

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OK and 3 papers sent, please go back and edit out your address
 

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