722.6 transmission electrical plug - Mercedes-Benz Forum

 
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post #1 of 5 (permalink) Old 12-02-2014, 08:30 PM Thread Starter
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722.6 transmission electrical plug

Hello,

I have a 2004 S430 4Matic. Does anyone know if the transmission fluid has to be drained in order to replace the electrical plug?

I recently had the gasket and fluid changed, now the leaking starts all over again and it seems like it is the plug.

Also, is this a critical issue? Meaning will the leakage destroy the electronic module? Should I take care of that right away?

My last question is, if you think this is an easy task to do with jack stands.

Thanks!
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post #2 of 5 (permalink) Old 12-02-2014, 09:21 PM
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What you need to replace is pilot bushing for the plug as this is the part with orings.
It cost below $10 under Mopar brand or about triple that at MB dealers.
In case you wonder - it is the same part.
When you replace it, wash the plug very well with MAF or electronic cleaner.
I did the bushing with car front on high ramps and all dripped down my sleeves was couple of cups of ATF, so it can be done with minimal ATF loss.

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post #3 of 5 (permalink) Old 12-03-2014, 07:33 PM
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I bought this 13-pin connector for $14CAN from the MB dealership which I thought was surprisingly reasonable.

Part number for my 2004 CLK: 203-540-01-53

Last edited by mis3; 12-03-2014 at 07:35 PM.
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post #4 of 5 (permalink) Old 12-03-2014, 08:13 PM Thread Starter
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Hello Kajtek1,

thanks for your fast reply. I bought this dipstick to measure the transmission fluid from Amazon but it is too long even though it says on Amazon that it fits my 2004 S430: http://www.amazon.com/gp/product/B009PJJDX2/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
Any idea what is going on? Can you or someone recommend a dipstick that doesnt cost like $100?

Another thing: Maybe I am too stupid to measure, but do I have the car running while measuring?

Thanks
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post #5 of 5 (permalink) Old 12-03-2014, 09:47 PM
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It is a tool, that sticks out during usage.
Insert it firmly with engine running till it makes firm stop. Several inches will be still above the tube.
Than pull out and read the fluid mark on the scale.
Transmission should be 80C for proper measurement.

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