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Old 05-15-2009, 11:04 PM   #1
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Angry HELP ! Transmission wont shift out of first

i AM SOOOOOOO FRUSTRATED ! I have an 04 240C sedan with automatic 5 speed. had a code that said "input turbine sensor fault " was told by the dealer that the electro- conductor plate ( hydraulic shift plate) was probably bad.
I got a new one, installed it with a new pilot bushing. put new MB transmission oil in it. The car wont shift out of first and slams into gear when you put it in drive or reverse. I have tried everything. please someone help !!!!!Click the image to open in full size.Click the image to open in full size.Click the image to open in full size.Click the image to open in full size.Click the image to open in full size.
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Old 05-15-2009, 11:11 PM   #2
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... electro- conductor plate ( hydraulic shift plate) was probably bad. I got a new one, installed it with a new pilot bushing. put new MB transmission oil in it.....
If you did that work yourself you're probably more qualified than I am....but. These transmissions are very touchy with fluid level. Did you check it with the correct tool?
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Old 05-15-2009, 11:25 PM   #3
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I did, checked the fluid, it is at proper level.
I noticed on that plate, it has 6 solenoids... could one of them be bad?
By the way, I am ASE certified mechanic but dont usually work on Mercedes.
I did everything by the book. now the check engine light is back on with the same code !
input turbine shft sensor fault again ! Dont know what to do besides take it all apart again !
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Old 05-15-2009, 11:27 PM   #4
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Would the fluid level affect the shifting?, it goes in reverse and first only. i reved it up to 4000 rpm while driving just wont shift.

Also noticed some of the 240C have a transmission dip tube and off course mine doesnt !

Last edited by highlandauto; 05-15-2009 at 11:29 PM. Reason: didnt finish my thread
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Old 05-15-2009, 11:36 PM   #5
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Would the fluid level affect the shifting?, it goes in reverse and first only. i reved it up to 4000 rpm while driving just wont shift.

Also noticed some of the 240C have a transmission dip tube and off course mine doesnt !
Yes, it could. With no dip tube how did you measure the fluid level? I've never heard of one without it.
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Old 05-15-2009, 11:38 PM   #6
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Yeah, i didnt either but here i am without dip tube.
The torque converter was drained along with the transmission.
I put in 8 qts just like the book says.
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Old 05-15-2009, 11:41 PM   #7
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Yeah, i didnt either but here i am without dip tube.
The torque converter was drained along with the transmission.
I put in 8 qts just like the book says.
How did you drain the torque converter, there's no plug in a 2004?
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Old 05-15-2009, 11:45 PM   #8
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pulled transmission line and blew out the content into a bucket. measured just under 8 qts.
so I replaced the same amount. would it do this if the level was a little over?
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Old 05-15-2009, 11:51 PM   #9
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pulled transmission line and blew out the content into a bucket. measured just under 8 qts.
so I replaced the same amount. would it do this if the level was a little over?
A fill is actually 8.5 quarts. How did you fill it without the dip tube? Without measuring you don't know if you started with the correct amount or not. I'm just trying to help you figure this out....not being critical. The dip tubes have a plastic cover that is held in with a one time use plastic keeper.
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Old 05-16-2009, 12:16 AM   #10
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I know you are not being critical. I appreciate your efforts.
Well, i filled it from the drain plug on the bottom of the pan, force pressure pump. its what the dealership told me to do. I looked everywhere for that dip tube to no avail !
the only dip tube i found is for motor oil. and it has a dummy plug. Sure would like to know why there isnt a transmission dip tube I know it is supposed to have a dummy plug also but with a clip retainer that must be replaced because it breaks off. Just not on my car. lol
Should I try to add a little more in 2 oz increments?
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Old 05-16-2009, 12:30 AM   #11
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I know you are not being critical. I appreciate your efforts.
Well, i filled it from the drain plug on the bottom of the pan, force pressure pump. its what the dealership told me to do. I looked everywhere for that dip tube to no avail !
the only dip tube i found is for motor oil. and it has a dummy plug. Sure would like to know why there isnt a transmission dip tube I know it is supposed to have a dummy plug also but with a clip retainer that must be replaced because it breaks off. Just not on my car. lol
Should I try to add a little more in 2 oz increments?
Between the motor oil tube and the throttle body there should be a tube capped with plastic lid held in with a removable tab. Go to post #24 in this thread for what the cap looks like, and the other pieces.
http://www.mbworld.org/forums/c-clas...tf-4134-a.html
Something doesn't sound right here, or they made changes between '01 and '04 that I don't know about (I'm no expert).
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Old 05-16-2009, 12:35 AM   #12
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I know exactly what its supposed to look like and where it should be. My 02 has one... but not the 04 ! isnt that weird?
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Old 05-16-2009, 12:44 AM   #13
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I checked out that pic and nope, i dont have one ! And this is why I am so frustrated !
I just want to drive my car !
Any other ideas besides dwelling on the dip tube? lol
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Old 05-16-2009, 12:45 AM   #14
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I know exactly what its supposed to look like and where it should be. My 02 has one... but not the 04 ! isnt that weird?
Yes, very weird. The seven speed transmission requires fluid to be pumped in and has no dip tube but I've never heard that on the 5 speed. Anyway, your plan of adding a couple of ounces sounds viable. Assuming you drained everything you might be 1/2 quart short......or, when you drained 8 quarts that's all you could remove and there's actually still 4 remaining and you're way overfilling. All I can think of is the dip tube was removed after the fact, there's no reason not to have one with the 5 speed. Look in your '02 and see where the tube goes and see what's there with the '04.
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Old 05-16-2009, 12:47 AM   #15
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....Any other ideas besides dwelling on the dip tube? lol
Well, no. Anything else is a guess and you need to know how much fluid is actually there. That is only a start for troubleshooting. I've read posts about how touchy the transmission is when not at the correct level.
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Old 05-16-2009, 12:52 AM   #16
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mleskovar is very knowledgeable. Heís merely being modest.

Your fill/measuring tube is located between the RH cylinder head and firewall.
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Old 05-16-2009, 12:57 AM   #17
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Sorry guys ! just went out to look again, only have have one tube ! and thats for motor oil.
I dont think anything was done after fact to the tube. I bought the car brand new ! and it is a five speed.
What a trip !
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Old 05-16-2009, 01:14 AM   #18
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Sorry guys ! just went out to look again, only have have one tube ! and thats for motor oil.
I dont think anything was done after fact to the tube. I bought the car brand new ! and it is a five speed.
What a trip !
So there's no way to know how much fluid is in there. I don't have an '04...what does the owner's manual say about checking trans fluid? Any special program to the display? Which trans line did you disconnect and where did you apply the pressure? How about a little history...what failure were you getting that started this? Any trans work done by the dealer? Glycol fail maybe? I'm guessing maybe the tube got bent back during a trans R&R.
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Old 05-16-2009, 01:24 AM   #19
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no special program on display. this transmission was running fine, never had a problem with it before. I purchased the vehicle new. It has 69000 miles on it. and normally drives like a dream. a week ago I drove 200 miles. and when I got close to home I pulled in to get fuel. I started the car and it had a check engine light on ... figured I ll get home,check it out . well it went into drive but stayed in limp mode in 1st gear. Pulled the valve body and oil pan. replaced the hydraulic shift plate or electro-conductor plate and a new plug ( pilot bushing) put everything back and torqued to specs with new filter and gasket and MB transmission oil. When I first started the car, the check engine light was off for about 5 minutes. It shifts hard into drive and reverse. And stil wont get out of first. I even reset the computer.
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Old 05-16-2009, 01:28 AM   #20
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What codes does the CEL give you?
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Old 05-16-2009, 01:46 AM   #21
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Input turbine shaft speed sensor fault
The funny thing is , now my OBD scanner wont communicate anymore with the car.
I have a top of the line MAC Taskmaster with all the latest software.
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Old 05-16-2009, 02:05 AM   #22
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Input turbine shaft speed sensor fault..
That sounds like a CPS failure.... "input turbine"?
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Old 05-16-2009, 02:11 AM   #23
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CPS? what is that?
will too much or too little fluid really prevent shifting?

Last edited by highlandauto; 05-16-2009 at 02:27 AM. Reason: extra question
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Old 05-16-2009, 02:59 AM   #24
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Quote:
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I did everything by the book...I replaced the electro- conductor plate and put in 8 qts just like the book says.
Which book? WIS?
Quote:
Originally Posted by highlandauto View Post
i filled it from the drain plug on the bottom of the pan, force pressure pump. its what the dealership told me to do
Thatís used for the 722.9, not the five speed on which youíre working.
A pox on the 'dealership' that furnished such faulty information.
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I have a top of the line MAC Taskmaster with all the latest software.
MBís transmissions necessitate STAR-DAS equipment for advanced electronic troubleshooting.
Quote:
Originally Posted by highlandauto View Post
I noticed on that plate, it has 6 solenoids...could one of them be bad?
Yes.
Quote:
Originally Posted by highlandauto View Post
By the way, I am ASE certified mechanic
So am I, but only for personal edification; itís not my livelihood.
Youíre no doubt aware of its acronym ask someone else.

Where is highlandauto?
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Old 05-16-2009, 06:38 AM   #25
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This is wierd - I have never seen a 722.6 transmission without a dipstick tube & it's 2004??? - I'm suspicious that this car has been modified. The TCU, ESP etc does compare input rotational speed with output rotational speed but the sensors are not on/in the gearbox to my knowledge unless they are well hidden in the electro-hydraulic control unit & I find them on no parts list. I thought that, as with the ESP, they use the engine RPM & rear axle speed sensors for this data.

Some investigation reveals that you have indeed replaced the correct part if you got a P0715 code, but that after replacement of the electro - conductor plate you require a STAR to reprogram the transmission & get it out of limp mode. Sorry for this bad news.

While you are pulling things apart in that area - please check the TCU harness plug for oil & leaking O rings. These leak & wick oil up the harness into the TCU which is under the passenger footwell plate.

722.6 peripherals
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Electro-hydraulic control unit

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+1 to splinter & mleskovar inputs
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HELP ! Transmission wont shift out of first-722.6-periferals.gif   HELP ! Transmission wont shift out of first-electro-hydraulic-control-unit.gif  
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Last edited by Glyn M Ruck; 05-16-2009 at 07:22 AM.
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Old 05-16-2009, 06:38 AM
 
 
 
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