landy

i have a clk320 W208 when driving at 60kms per hour and you floor the accelerator i.e kick down the engine revs increase but the transmission will not change up from second gear ( i think its second) eventually the engine does not respond to the accelerator as it is reaching max revs, it goes into l7mp home mode you have to stop turn off then on. If you gently accelerate without kick down it changes all the way fine.

also in manual mode you can shift thru all gears with no problem. The tran oils has been flushed and replaced and levels checked, i changed the conductor plate an connector to the later one with bettr seals it was not wet anyway. After al, this I am at a loss as to what to look at next , shift module ...maybe

note fuchs correct grade oil used oil levels check in park with trans hot.

miatawnt2b

I had a similar problem with my CLK430. Turned out to be the Throttle position sensor (TPS). Might want to look into that.
-J

Just Is

I have the same issue on my 2000. I replaced the conductor plate, no luck.

Going to pull the TPS off my 2001 and see if it fixes the issue. Will report back.

landy

I dont want to splash out the bucks on the TPS to try it and I dont seem to be able to find much on testing it?

Let me know how you guys go.

Just Is

I haven't had a chance to swap mine yet. Not sure how to remove it and don't want to break it.

jonUF02

Sounds like time to pay for dealer diagnostics rather than throwing random parts at it. Or just shift gears yourself, forever.

exhaustgases

It could be a one way clutch problem too. Sprag or roller I don't know what they use.

fd3

I have an 02 clk55 and I am having the same thing.

I had the transmission flushed, connector pin replaced and I got the car back from the auto shop, at first I thought it was a fluid issue however there are no leaks.
Day 1 after getting the car from the shop I had no problems at all. Check engine light was on however the car corrected itself by the next morning I was driving and the problem began again
I drive and shortly after there is either no power to the wheels or the car will stay in 2nd gear and rev all the way to 4000 without shifting
eventually (less than a mile or so) when I stop the car will no longer move and I have to turn the car off and wait several minutes to even move again. I don't know where to go from here. I dropped the car off at the same shop and they are thinking that I may need a whole new tranny. I am hoping they are wrong and would really like some feedback as to what the issue was with other peoples cars.
Battery is good
Fluid is good

Please Help....

jonUF02

Curious; what shop did you bring it to? Did they use the dealer STAR diagnostic computers on it?

Unfortunately your issues are strange, and repair at a qualified shop with any necessary parts, such as a transmission replacement or rebuild, might quickly exceed the point of being economically feasible. Maybe time to sell it on to a mechanic or part it out.

As a pure guess, this sounds like something wrong in the transmission itself like the valve bodies, or maybe the TCU computer.

exhaustgases

So in other words the shop messes up your transmission and likely used the wrong fluid, and then they want to sell you a new transmission? Or are they offering to pay for it?
If they messed it up its on them. Just tell them you will be contacting an attorney.

Steven911

Does anyone know if a 2000 transmission on a MB clk430 is compatible with a 2002 transmission on the same vehicle ????

jonUF02

I'm pretty sure they are mechanically the same, but the ECU/TCU software is a different version. I don't know for sure, or how it all goes together. The engine is mechanically the same.

exhaustgases

I'd call one or all of these places to find out.
1 the dealer parts department.
2 a transmission shop.
3 a wrecking yard.

I know its not real scientific but I just looked on ebay. There is a transmission and it says it fits 2000 to 2003. I would have guessed it would fit as not many manufactures make huge changes in drive train stuff with in a certain time period.
Also the conductor plate ad said the same. So 2000 to 2003 must be a generation of the Clk430 and power train parts would interchange freely.

Steven911

Thanks guys for the feed back ! I'll try the dealer parts department first. Let you know what they say !

jimpott

Just changed conductor plate and pressure regulator spring. 199750 miles and counting! My Indie cleared trans codes,no charge. Highly recommend Autobahn Service Center-Savannah,Ga. Scott Pearce & Dietmar Strohmetz

gixxerboy

i run a transmission shop and i own a performance company.
allot of things can cause to have the issue you are having. your just going to be throwing parts at it unless you have a properly diagnosed. You should be able to go to any reputable trans shop for it. You do not need star to diag or fix it.

To the other poster yes, you can swap in in 02 trans in your 2000 with no issues.

Steven911

Thanks for the info . I'm having the trans sent to the shop ! I'll post after it's installed !

exhaustgases

You need to watch out for the Transmission shops. Most are a wham bam deal. And most will not use the correct fluid either. Please let us know the cost for having a trans shop do the work.

gixxerboy

what is a wham bam deal?

And you dont have to use fluid from MB, i have full synthetic that meets mercedes requirements.

Yes there are bad shops, but just like there are bad anything in business, some dealership suck. I've had cars come to me that the dealer said it needed a new trans and it didnt.

to make a blanket statement like that is ignorant. And honestly the last place i would go for transmission work unless its service is a dealer, most cant repair or rebuild transmissions. so they just try to sell you a re manufactured unit. I cant tell you how many cars ive had towed from dealers that was told they had to replace the whole trans where we could fix it or replace it for cheaper.

exhaustgases

Blanket to you maybe, I've worked with them.
Wham bam, it is basically people that don't care about the item they are working on and rush as fast as they can to make a buck. Sometimes they hammer something that shouldn't be, sometimes they leave a bolt or two out, and or forget to tighten it. And if the bolt falls out after the 1 month warranty so much the better because they think its coming back for more work. And especially now since its very hard to find good mechanics.
I never said it has to be labeled on the bottle Mercedes, I said correct fluid.
If its Valvoline max life its not the correct fluid, some shop was going to use that on my step sons car. The right stuff is Shell 134 I think that's the number.

Oh and I will gladly mix a fluid for you and "say" it meets or exceeds Mercedes specs.

burgca

Everyone can have a bad experience, but you can't label "group all" into anything. Even the best shops can have a bad day, but a reputable shop stands behind their work regardless of warranty? Get a proper diagnosis or you will continue to throw parts and money most issues. Hope the new trans addresses the issue, post when the installation is complete.

gixxerboy

Exactly my point.
And its not exclusive for transmission shops, its any business.

GatorMB

gixxerboy is correct, There is a far and between medium of business ethics in the transmission warfare game.
If you take your Benz to xco transmission expect a wham bam.
A reputable indy euro shop might not rebuild the transmission but will ship it to a trusty co-op.
I worked a VW dealer where ATX were built in house and indy shop where they were built in shop. Did the they get a rebuilt transmission? No they were repaired and resealed.
A reputable shop will install new steel, frictions, plus bushings where needed. re seal.

Gixxerboy might know where I am coming from.
Cheers, Gator

gixxerboy

Yes i do,

I consider myself a reputable shop, Allot of indy shops will wholesale their transmission jobs to me, Some they will send the car over or they will pull it and just send the trans.

We do repair, reseal or rebuild transmissions. A customer always knows what service they are getting.
And certain parts will go standard into every rebuild and i will replace some common issue parts even if they are still good at the time. Plus what ever other parts are needed due to their specific failure.

And i've had people request patch jobs. Typically thats a used car dealer trying to make the car sellable as cheap as possible.