How does the lock work? It's leaking fluid is this an o-ring or the whole connector. Thx

Here's a write up I did when I replaced the connector on my '01 SLK.

http://www.benzworld.org/forums/r170-slk-class/1309980-repairing-transmission-fluid-leak-post2287316.html?posted=1#post2287316

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1993 190E 2.3
2001 SLK230
1971 LS5 (454) Corvette Convertible

Thanks for the info. I'm having trouble opening the pictures. It says I'm not logged in. The text is great thx for the help.
86 Red c4 146,000 daily driver...... w/LT5 transplant Thx again Mercjf

Here's the whole write up.

Okay, so I backed my car out of the garage and noticed a puddle of fluid on the floor. Upon inspection I determined it was transmission fluid and I looked under the car and noticed fluid droplets on the transmission pan. After searching this forum I decided to replace the Electrical Connection Spacer that goes into the front of the transmission on the passenger side.

When I asked for the part at the dealer the parts guy said there was a newer version for $8.19.

I jacked up the car on the passenger side and had enough clearance to remove the electrical connector. First, I removed the connector cover using a T-27 Torx bit, then I removed the wiring harness from the clip on side of plate, then pulled down on the plate to remove it. I then moved the tab on the spacer from the 11 o'clock position to the 7 o'clock position and the electrical connector came out of the spacer. If yours is leaking expect it to be saturated with transmission fluid. Then, with a pan underneath, I untightened the bolt in the center of the spacer with a 7mm socket and pulled the old spacer out of the transmission. I lost about 3 ounces or so of fluid. The inside o-ring did not come out with the old spacer, so I reached my finger inside the hole and pulled it out.

I let the electrical connector hang down in the pan to drain any fluid that might be in the wiring harness or connector. I put some clean trans. fluid on the o-rings of the new spacer before installing it, then tightened the screw and I removed any fluid from inside the spacer before installing the elecrical connector. Remember to put the tab at the 7 o'clock position to re-install the connector and turn it clockwise until it locks in place. I wiped everything down around the connector/spacer, re-installed the cover and took the car for short test drive. Since everything looked okay, I drove the car longer before checking the transmission fluid level. I added a few ounces to get it in range.

*Note* My old spacer has red o-rings and the new one has black o-rings.
New part #2035400253
Old part#1602700250

This should only take about an hour to do....depends on your skills, tools, etc.

Old Connector






New Connector

Attached Thumbnails

       

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1993 190E 2.3
2001 SLK230
1971 LS5 (454) Corvette Convertible