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My 2014 E250 4matic bluetec is exhibiting 2 symptoms from the transmission. The first symptom is when using E mode, the transmission starts out in first gear. Shouldn't it start out in second? The second symptom is, when fully up to operating temperature, after coming to a complete stop, between four and eight seconds, the transmission jerks as if the car was bumped into from behind. It seems to me to be a problem with a solenoid or two. Any recommendations?
My 2014 E250 4matic bluetec is exhibiting 2 symptoms from the transmission. The first symptom is when using E mode, the transmission starts out in first gear. Shouldn't it start out in second? The second symptom is, when fully up to operating temperature, after coming to a complete stop, between four and eight seconds, the transmission jerks as if the car was bumped into from behind. It seems to me to be a problem with a solenoid or two. Any recommendations?
When was the last time the fluid was replaced? MB boxes are dependent on fluid changes.
4 cylinder bluetec always start on 1st gear.
As for jerking, you need to scan it.
Those drivetrains disconnect torque converters when car is not moving, so my 1st suspect would be the control.
4 cylinder bluetec always start on 1st gear.
As for jerking, you need to scan it.
Those drivetrains disconnect torque converters when car is not moving, so my 1st suspect would be the control.
What do you mean by “disconnect torque converters”? Do you mean “engage the lockup clutch”?
No, this is pretty new technology and I did not spend too much time researching it.
When you stop at red light, or other, the transmision is disconnected from the engine, when in old design TC would keep pushing.
When you let brake pedal go without pushing gas pedal, if you are sensitive you will feel that for fraction of second the car is not moving, than the computer will couple TC and it might start rolling.
I loved new technology, but I am retired right now and I keep asking myself do I really need to know all that?
Bottom line, with your troubles -malfunction of this system comes to mind.
If its like mine it will do it without releasing the break. At temp driving around, pull up to stop light, maintain foot on brake pedal, few seconds later it kind of jerks forward a little. I dont know what the issue is but also dont have scanner yet. I asked about this previously in another thread and never did get an answer. Same issue as the OP.
No, this is pretty new technology and I did not spend too much time researching it.
When you stop at red light, or other, the transmision is disconnected from the engine, when in old design TC would keep pushing.
When you let brake pedal go without pushing gas pedal, if you are sensitive you will feel that for fraction of second the car is not moving, than the computer will couple TC and it might start rolling.
I loved new technology, but I am retired right now and I keep asking myself do I really need to know all that?
Bottom line, with your troubles -malfunction of this system comes to mind.
What information would you point to, to describe the new technology? How did it come across your radar?
What information would you point to, to describe the new technology? How did it come across your radar?
INTERNET. Don't remember the source, but MB does put lot of stuff into their vehicles without letting owners to know about it.
In previous model section you will find topics titled "hidden gems" and pretty long ones.
W212 M276 DELA 30 ; W211 OM642 ; R107 M117, Sierra 1500 LZ0
Originally Posted by Uncle Frank
My 2014 E250 4matic bluetec is exhibiting 2 symptoms from the transmission. The first symptom is when using E mode, the transmission starts out in first gear. Shouldn't it start out in second? The second symptom is, when fully up to operating temperature, after coming to a complete stop, between four and eight seconds, the transmission jerks as if the car was bumped into from behind. It seems to me to be a problem with a solenoid or two. Any recommendations?
I have a 15 E400, my mother has a 16 E350. Mine only starts out in first when in S mode, hers starts in first in both modes. My best guess is that the lower powered models now start in first to give a more peppy feel.
Mercedes Benz of Ft. Pierce serviced the box in March this year. Tech reported box was clean and fluid was still blue.
I'm confused by this statement. Did the box get serviced or checked? If it got serviced then the fluid is fresh, no need for the tech to say "the fluid is still blue".
...... My best guess is that the lower powered models now start in first to give a more peppy feel.
MB went even farther to make better impression.
The program also exist on my E250 BT, but is very clear on my GLE with the same 4-cylinder Bluetec.
When I push gas pedal starting at red light, even with pedal at 25%, the software will rev engine to 4000 rpm for good acceleration.
Since I don't always want quick start, I had to develop technique to brush the pedal for a moment, let it go and when the transmission shifts to 2nd, than push the pedal more.
In E it will go to about 3000 rpm.
I bought the car in Feb 2021 with 98k miles on it. I had the Benz dealer research the service history and they could not determine if the trans had ever been serviced. So I had them service it. The tech said the inerds were clean and the fluid was still blue. He also said the trans filter had a 2014 date code. I performed all the remaining B service items myself.
As indicated above, the ECO features are engine-dependent, meaning gas guzzlers don't have much of environment -saving features.
Some features are listed in manual.
Wikipedia tells that W212 with 7G transmission is having 3 versions of it.
They are different versions for a reason. Mercedes-Benz E-Class (W212) - Wikipedia
I bought the car in Feb 2021 with 98k miles on it. I had the Benz dealer research the service history and they could not determine if the trans had ever been serviced. So I had them service it. The tech said the inerds were clean and the fluid was still blue. He also said the trans filter had a 2014 date code. I performed all the remaining B service items myself.
Software may need to be updated, although symptoms do not match reference attached bulletin.
The first symptom is when using E mode, the transmission starts out in first gear. Shouldn't it start out in second?
Same issue with my 2015 E350 4matic. Between the throttle mapping and first gear starts it's almost impossible to make a smooth start from a dead stop. It gets almost violent when it combines brake hold and stop start. Test drove the 213 E300 and it was much smoother. This is my second E class, first was a w211, with the G7 transmission and I can't say it got much better in the 8 years in between, Not really suited for a luxury car IMO. The 5 speed that came before it was much smother as well, although more sluggish. Strange thing is, the 7 speed in the S-class is much better.
Same issue with my 2015 E350 4matic. Between the throttle mapping and first gear starts it's almost impossible to make a smooth start from a dead stop. It gets almost violent when it combines brake hold and stop start. Test drove the 213 E300 and it was much smoother. This is my second E class, first was a w211, with the G7 transmission and I can't say it got much better in the 8 years in between, Not really suited for a luxury car IMO. The 5 speed that came before it was much smother as well, although more sluggish. Strange thing is, the 7 speed in the S-class is much better.
I have the same behavior, As my W220 with 5 speed tranny always start from 2nd gear in E mode while start from 1st gear in S mode but my new E350 always start from1st gear in both modes, so I thought that was normal as different Tranny and the car newer 14 years so I guess MB change that setting.
04-20-2023, 05:21 AM
