Trans Leak destroys cable harness, control unit & floor shift - Mercedes-Benz Forum

 
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post #1 of 9 (permalink) Old 01-24-2008, 07:17 PM Thread Starter
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Trans Leak destroys cable harness, control unit & floor shift

OK this is weird. 2001 E320W 64000 mi. will not shift. After 3 days of Blue Angels Jet flying about. These jets cause garage doors to go up and down, alarms to go off, windows break, and windshield washer fluid shoots out on its own. I Drive 3 blocks to store. come out of store and car will not shift. I think its from the Blue Angels but the Benz dealer repair guy says no...TOW.
$3000 later. The invoice reads "Trans fluid in Trans Control Unit and shorted shifter ASM and stoplamp switch plus wire harness for trans control unit bad. Performed short test pulled codes for trna and shifterasm found trans fluid in harness. installed new control unit "ahd stop lamp switch and shifter. Erased codes. Test drove. OK.
Is this a common occurence in 01 E320's? Or in any Mercedes? Or was it those Blue Angels?
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post #2 of 9 (permalink) Old 01-24-2008, 09:54 PM
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That is a common occurence in any vehicle with a 722.6 transmission. The electrical plug on the trans has been know to leak since its existance and sometimes it will leak up the wiring itself into the ETC. And yes if left too long, it will spead elsewere too. The best way to tell if this is starting to happen is the presence of dirt buildup around the plug connector on the trans. Any leak should be fixed ASAP otherwise stuff like this can happen.

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post #3 of 9 (permalink) Old 01-24-2008, 11:55 PM
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Well... I don't think it can properly be described as a 'common occurrence'. There are several hundred thousand (wouldn't be suprised if it is over a million) of these transmissions out there, so it would take a huge number to make it common. That said, even a two percent failure rate -- nowhere near common -- affects thousands of cars. The vast majority of them live out their lives with mary a leak.

But you make a very good point: inspections cannot be ignored, for this and a hundred other reasons.

Take care and enjoy the ride,
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post #4 of 9 (permalink) Old 01-25-2008, 01:17 AM
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Originally Posted by gregs210 View Post
Well... I don't think it can properly be described as a 'common occurrence'. ...
Are you guessing or you know for a fact it is not a "common occurence" ?

It's a design flaw which can leave the driver stranded. If MB wants to do the right thing, a recall is the right thing to do.
If like you said it is not common, the cost is minimal. But I would
disagree with your characterisation that this is not common.
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post #5 of 9 (permalink) Old 01-25-2008, 07:36 AM
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The vast majority of them live out their lives with mary a leak.
Interesting that you've done that in the past tense - on a transmission that's been out for barely a decade.

Last edited by deanyel; 01-25-2008 at 08:17 AM.
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post #6 of 9 (permalink) Old 01-25-2008, 07:57 AM
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Are you guessing or you know for a fact it is not a "common occurence" ?

It's a design flaw which can leave the driver stranded. If MB wants to do the right thing, a recall is the right thing to do.
If like you said it is not common, the cost is minimal. But I would
disagree with your characterisation that this is not common.
Yes he is making assumptions and YES it is a common problem. It wont go away by ignoring it or by making statistical evaluations based on what information?

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post #7 of 9 (permalink) Old 01-25-2008, 08:18 AM
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What Greg means is that it's not a common occurance that he's heard about it.
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post #8 of 9 (permalink) Old 01-25-2008, 03:12 PM
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Sorry, for not clarifying. I work at a dealer therefore I do see a lot of them. What I ment about the "common occurance" was the electrical plug leaking in general. A percentage of them will end up not leaking bad externally but will climbing up the wiring instead. And yes there was a recall that they claim only covers MY 2004-2005 models which I do not really agree on. Most of the newer ones (after replacement) rarely leak, but the older ones still have that tendency.

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post #9 of 9 (permalink) Old 01-25-2008, 04:02 PM
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Originally Posted by gregs210 View Post
Well... I don't think it can properly be described as a 'common occurrence'.
Nevertheless there's a DTB on the problem and there's a revised plug design.

Kent Christensen
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