mshah70

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Hello i have a mercedes w212 E200 2011 150kmiles

Recently while changing from P to R or N to (D or R) i feel a judder from the transmission. However i drove it like this for a short period and now i have a major issue.

The issue is when i select a gear ( R or D) the car doesnt engage the gear. However sometimes it does engage and a short while later it disengages while driving.
Also when im at a stand still and put it on N, and then select D, theres no response, i press the gas, only the revs go up but no engagement of the gears.
Once i switch the car off and leave it for a while, then try again, it engages, but same problem happens almost immediately.

I used Star diagnoses to scan the vehicle, but came up with no codes.
I checked all solenoids etc via Star and they seem to be in working order.

I need some advice and has anybody had similar issues?

Please help!
Thanks
 

John Laidlaw

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I would wonder if the ATF has ever been changed?
Almost anything else would show up on star - ECU, Electroplate, valve body
 
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mshah70

mshah70

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I would wonder if the ATF has ever been changed?
Almost anything else would show up on star - ECU, Electroplate, valve body

So the next step i will take is to change the transmission fluid, give it a service and see if that will help.
I dont think the fluid has ever been changed, but should that be the cause of the problem?
 

John Laidlaw

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So the next step i will take is to change the transmission fluid, give it a service and see if that will help.
I dont think the fluid has ever been changed, but should that be the cause of the problem?
150,000 miles on the same fluid and filter will not be good that’s for sure. The old ‘sealed for life’ has been disproven now.
 
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mshah70

mshah70

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Do
150,000 miles on the same fluid and filter will not be good that’s for sure. The old ‘sealed for life’ has been disproven now.

Do u think old ATF can cause such problems as this?
 

John Laidlaw

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I’ve never seen such severe reactions to tired out ATF personally so I’d defer to the indy’s On here to comment if indeed that could be the case. However some of what you describe I’ve seen or heard about through poor fluid
 
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mshah70

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I’ve never seen such severe reactions to tired out ATF personally so I’d defer to the indy’s On here to comment if indeed that could be the case. However some of what you describe I’ve seen or heard about through poor fluid

I just been to the main dealers for some stuff, managed to have a chat to one of the guys, he said possible valve chest failing, also said to check the auxiliary battery.
He also said that it wont necessarily show up on Star.
 

John Laidlaw

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I just been to the main dealers for some stuff, managed to have a chat to one of the guys, he said possible valve chest failing, also said to check the auxiliary battery.
He also said that it wont necessarily show up on Star.
Sounds useful, although a valve body fail I would have thought would show in Star. Anyway somewhere to start - Auxiliary battery does cause some gremlins and did on the W211 with SBC and AT, wasn’t sure on the 212. My aux failed in mine and all it did was switch off the eco stop start....
 
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mshah70

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Update!!

Ok guys just been for a fluid change.
The mechanic said there was only 2.5L of fluid that came out. The previous mechanic got it all wrong when he told me the fluid level is ok.

My mechanic told me there was a spring that came off in there, gear 1 gear 2 was slipping due to lack of ATF.
He put it all back together, new fluid, filter and gasket.

Took it for a test drive, all seems good so far.

Hopefully thats the end of the matter.
 

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Excellent! Amazing how many people overlook the ATF when thet’r a gearbox gremlin. The low level clearly has caused the gear slippage. Wonder how the spring got in there, what from and happy it didn’t cause permanent damage...:p
 
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Excellent! Amazing how many people overlook the ATF when thet’r a gearbox gremlin. The low level clearly has caused the gear slippage. Wonder how the spring got in there, what from and happy it didn’t cause permanent damage...:p

I believe the spring came off from the selector,if im not mistaken.

Different people had different opinions, the rac guy said the torque converter is gone! This guy said this and that.
Unless u go to someone you can trust, its easy for people to say u need a new gearbox, and that will put a big dent in your pocket.
 

John Laidlaw

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I believe the spring came off from the selector,if im not mistaken.

Different people had different opinions, the rac guy said the torque converter is gone! This guy said this and that.
Unless u go to someone you can trust, its easy for people to say u need a new gearbox, and that will put a big dent in your pocket.
How true. Every day is a school day and all that....
 

alexanderfoti

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I was going to say, sounds like a low fluid level. First thing they do is streeeeetch the amount of time to go into drive and reverse when the box is low (as its all aerated and the pressure drops because of it)
 

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Update!!

Ok guys just been for a fluid change.
The mechanic said there was only 2.5L of fluid that came out. The previous mechanic got it all wrong when he told me the fluid level is ok.

My mechanic told me there was a spring that came off in there, gear 1 gear 2 was slipping due to lack of ATF.
He put it all back together, new fluid, filter and gasket.

Took it for a test drive, all seems good so far.

Hopefully thats the end of the matter.


how much did the ATF change set you back if you don't mind me asking?
I've got a W212 2013 (M274 petrol engine) so it would be really good to know :)
 
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mshah70

mshah70

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how much did the ATF change set you back if you don't mind me asking?
I've got a W212 2013 (M274 petrol engine) so it would be really good to know :)
77 parts
50 labour
 
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mshah70

mshah70

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Wow... I remember paying £500 for parts and labour for my old BMW 520 (2006) and that was at an indie! Thanks for letting me know
Expect the labour to be more expensive, as i got it done through someone i know.
But parts were from Mercedes Main Dealer
 

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mshah70

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BE051AF4-D51F-4EEF-8046-0A4910E85E2B.jpeg Guys the problem has started again.
While ATF is cold the car drives ok, as soon as ATF fluid warms up the car doesn’t engage in gear.

Im really puzzled.
If anybody can help itl be great
 

alexanderfoti

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View attachment 44175 Guys the problem has started again.
While ATF is cold the car drives ok, as soon as ATF fluid warms up the car doesn’t engage in gear.

Im really puzzled.
If anybody can help itl be great

Looks like a faulty conductor plate/TCU (on the same thing inside the gearbox).

There are some places that replace just the faulty speed sensors but I have no experience with then.

Its a theft relevant part so needs SCN coding in with Online Xentry.
 


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