ghiaguy

Thanks for the update, I'm looking forward to what you find tomorrow. Good luck man!

crembz

Yes do post back I'm about to change mine

insame1

Just to follow up. I replaced my water pump and all is good now. Trans has no more issues and the car runs like a champ again. Now to work out all the common w203 issues like the blend flap door.

frejo

Jerk is gone!

jneal3110

Three solid data points is pretty conclusive in my book...

ghiaguy

Exactly, this is going to be done on the service visit to my indie wrench. Great news!
frejo, was it in line with the previous pricing estimates?

frejo

Since I live in Sweden the prices are different. That said, I think I paid appr. $100 for the solenoid and another hundred extra for the work when I had the fluid and filter replaced.

I also want to add that it is much warmer here in Sweden now and the jerk has always been more of a problem when cold. But as far as I can tell, the jerk has left

cm60k

Glad to hear that Frejo..,

did you recalebrate or tune your TCU after Blue top replaced..?, or just reset it..??

ZAYED,,

jneal3110

My experience was the same, warm meaning either after driving continuously for 15 minutes or outside air temp >65 degF or so when starting out, the jerk was not bad but occasionally slightly noticeable. Replacing this solenoid eliminated the jerk over the entire operating range, cold/warm/various amounts of time after cold start. Have not felt one even tiny torque converter jerk since making the change.

ghiaguy

I am so excited about this- I have been down on the car because of it!

frejo

I don't think the solenoid I changed has a blue top.

cm60k

Did you replace the converter clutch-up solenoids..?, or oil pressure solenoids...??

ZAYED,,

frejo

The solenoid for the converter

cm60k

Ahh, i see, you mean this one, isn't..??



ZAYED,,

frejo

I changed the "PWM solenoid" mentioned earlier in the thread. I don't know what it looks like.

cm60k

Did you change 1 piece or 2 pieces...?

ZAYED,,

frejo

I believe there is only one of these

cm60k

If it (1) piece, that should be "converter clutch-up solenoid"...

ZAYED,,

K3nD

So I called a few Mercedes indy shop here in my area to possibly get a quote for this PWM solenoid replacement and so far no luck. One shop said I'll just have to get a whole new valve body put in and the other shop said that they cant do it because it might need a new software update after replacing it and they don't do updates on the software. I was hoping I didn't have to call the actual dealership but I guess I don't have a choice now.

Anyone that done this before knows if the software needs to be updated after the PWM solenoid installation?

frejo

No, you don't a new valve body and no, you don't need new software. I think you have to lower the VB to get to the solenoid, but that's pretty much it.

jneal3110

+1

My indy mechanic took the part I brought him, installed it with no software update. It'd be nice if some mechanics learned the phrase "I don't know, let me look it up..."

screw991le

Glad its a little better. I need to get mine looked at, only does it when its cold.

K3nD

That what I thought too.. I know there's been a few different part numbers that has been thrown around - what was the part number you bought and you have a C55 as well right?

jneal3110

My P/N was 240 270 16 00, and i have an '04 C32, not the C55. I like mbpartsworld.com for verifying P/N's, they have good blow-up pics of systems that let you see what part you want and where it is, plus of course the P/N itself.

K3nD

interesting.. the part number I came up with at mbpartsworld.com is 1402770435 - both for a 04 c32 and 05 c55. And to add to the confusion I just got off the phone with a local MB dealership and they said that they can not get just the solenoid and I would have to purchase the whole valve body.