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Old 08-25-2012, 05:34 PM   #1
mrp1p
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Join Date: Nov 2008
Location: Llandudno, UK
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My Ride: e46 318ci + 318i
Question Melted pin on EWS chip anyone?

Evening guys. Bought another e46 this morning

2000 318i 100k miles on the clock.
m43tub19 (BMS46) with EWS 3
Sold as a non-starter, cranking but not firing.

Towed her around the corner because I felt quite guilty fixing her on the seller's driveway. Connected to INPA and found the error:

140 - Interface DME - EWS

Swapped the EWS, DME and the key from my coupe, and she started first time, and sounds amazing for a car that hadn't been started in over 6 months.
Upon opening the modules, the DME looks flawless, but the EWS is in quite a state. Red gunk all over the place and a pin melted on the chip.

I removed all my working modules, just incase the cause of the melted pin is still present. I'd like to order a new set, but am quite sceptical about these sorts of problems, as they have a habbit of returning.

So has anyone had any similar problems with their EWS?
Or does anyone care to take a guess as to what could have caused the pin to melt in the first place?
Also does anyone know if the red/brown stuff is some kind of protective coating?

For anyone else trying to troubleshoot similar issues;
The car cranked fine, but the DME wasn't sparking. The EWS had no relevant errors and responded as expected to all commands in INPA, the only sign of a problem was the error mentioned above stored in the DME.
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Old 08-25-2012, 05:43 PM   #2
Zell
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Now I'm colorblind so I can't really tell easily with that specific picture above, but does the back look something like that? To me, the right edge seems kind of red and is similar to what I see in your picture. That may be a protective coating, for waterproofing or to prevent tampering - who knows. Usually tamper-proof circuit boards have a big, ugly layer of brown stuff all over it that makes it impossible to see what's under it (without some serious equipment, at least).

The broken EWS could be a failed attempt at the previous owner connecting to it.

http://www.resettools.com/bmw_scanner_1.4.0

Scroll to the bottom of the page.
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Last edited by Zell; 08-25-2012 at 05:46 PM.
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Old 08-25-2012, 08:08 PM   #3
mrp1p
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Join Date: Nov 2008
Location: Llandudno, UK
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My Ride: e46 318ci + 318i
Very interesting stuff! Im sure they are the same, will check properly in the morning and do some thorough reading.
And not to worry about the red stuff, I opened the working EWS and it looks almost identical with the exception of the broken pin, so I'm quite confident it must just be some sort of protective laquer as you suggested.

I think you may also be right about the attempted repair, the module was dangling by the wire when I removed the plastic panel to access it. And I'm not sure how clear it is in the photo but it looks like the pin in question is way too long, as if someone has tried to solder a wire directly on to the chip.

Thanks for your help! Very much appreciated as always.

Phil
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cranks but no start, ews, melted pin, wont start

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