Transmission issue causing vibration?
Joined: Nov 2016
Posts: 7,847
Likes: 3,499
From: Maryland
2015 SL400 (M276 Turbo), 2014 C350 Sport (M276 NA), 2004 SL500 (M113), 2004 Audi TT225 (BEA)
Member
Joined: May 2009
Posts: 209
Likes: 4
2011 c300 4matic
i blame this on massive solar flare that was happening. while i was doing it. and my brain was completely lagging
the fact that i mentioned filling up hte transmission fluid through the dipstick hole and nobody on either forum corrected me at the time i can assume also because of the solar flare.
since this car doesnt have transmission dipstick lol.
so anyway
i drained my oil and it was time for an oil change anyway.
and its been 3-4 weeks and it is starting to shift and drive normally with exception of very hard bump or hard slip when shifting to second gear while cold.
it goes away completely when warmed up i smashed through gears off the light to kinda see where it stands and it shifted without hesitation thghough all gears when accelerating hard.
the engagemend is still a bit wobbly in lower gears but the rpm fluctuation is gone and shudder is gone.( only the blown out motor mounts remain now)
there is a thread on mb forums in amg section of people havign this issue on cold shifting with the amg cars. seems like i have exactly same
tried to get the dealership to update software for me while they were replacing the airbags recall but they just made me feel poor and not worth their time because i didnt own a brand new mercedes. seems like once your car is older than 5 years or out of warranty you dont exist for them anymore
i bought the vxdiag vcx j box to see if i can just do it myself
the fact that i mentioned filling up hte transmission fluid through the dipstick hole and nobody on either forum corrected me at the time i can assume also because of the solar flare.
since this car doesnt have transmission dipstick lol.
so anyway
i drained my oil and it was time for an oil change anyway.
and its been 3-4 weeks and it is starting to shift and drive normally with exception of very hard bump or hard slip when shifting to second gear while cold.
it goes away completely when warmed up i smashed through gears off the light to kinda see where it stands and it shifted without hesitation thghough all gears when accelerating hard.
the engagemend is still a bit wobbly in lower gears but the rpm fluctuation is gone and shudder is gone.( only the blown out motor mounts remain now)
there is a thread on mb forums in amg section of people havign this issue on cold shifting with the amg cars. seems like i have exactly same
tried to get the dealership to update software for me while they were replacing the airbags recall but they just made me feel poor and not worth their time because i didnt own a brand new mercedes. seems like once your car is older than 5 years or out of warranty you dont exist for them anymore
i bought the vxdiag vcx j box to see if i can just do it myself
Newbie
Joined: Oct 2024
Posts: 1
Likes: 0
Hi guys
New here but so glad to find this forum because I really need some good advice from experts like you all.
I’ve had a 2009 C300 Luxury with 122k miles for about 10 yrs. I’ve had an annoying vibration for a while now that is hard to notice unless you drive the car a certain way so even a couple mechanics haven’t been able to identify it. It happens only when I subtly accelerate the car at low RPM’s (between 1500 - 3000) at any speed. I can feel the vibration kinda like in the dashboard. Gonna try to upload a video with it.
When I pump the gas hard you can’t feel it. That’s why I just decided to drive it recently on manual / tiptronic mode to keep RPM’s high.
A mechanic thought it was the engine mounts that needed replacement. Did that and nothing. Finally a transmission expert assured me I need to replace the converter to fix it. A bit of metal / copper got inside the transmission so the vibration comes from this metal.
The guys is positive that this is the problem. Said this is common in this car. Gave me 2 options to fix it:
> Option #1 -
replace converter: $899 converter. Labor $1,1k. $400 service transmission. Total: $2,5k plus tax
> Option #2
Drop transmission, replace converter, etc. Total: $4,5k
Apparently, this car’s transmission is good for about 150k miles before doing the whole drop.
Have any of you had the same problem and was it the converter too or something else? Does this sound legit?
I’m debating whether I should invest in the car and keep it long-term or if this is a 1st of more serious issues and I should upgrade to a newer model. Tbh, I would prefer keeping it since it would break my heart to sell it so cheap since most of the depreciation has hit already. If this vibration thing finally disappears, I will probably refresh the car with some 18” wheels, spoiler, diffuser and exhaust to give it an AMG look and keep it for as long as possible.
Apologies for the long post. New here and really needing your advice.
New here but so glad to find this forum because I really need some good advice from experts like you all.
I’ve had a 2009 C300 Luxury with 122k miles for about 10 yrs. I’ve had an annoying vibration for a while now that is hard to notice unless you drive the car a certain way so even a couple mechanics haven’t been able to identify it. It happens only when I subtly accelerate the car at low RPM’s (between 1500 - 3000) at any speed. I can feel the vibration kinda like in the dashboard. Gonna try to upload a video with it.
When I pump the gas hard you can’t feel it. That’s why I just decided to drive it recently on manual / tiptronic mode to keep RPM’s high.
A mechanic thought it was the engine mounts that needed replacement. Did that and nothing. Finally a transmission expert assured me I need to replace the converter to fix it. A bit of metal / copper got inside the transmission so the vibration comes from this metal.
The guys is positive that this is the problem. Said this is common in this car. Gave me 2 options to fix it:
> Option #1 -
replace converter: $899 converter. Labor $1,1k. $400 service transmission. Total: $2,5k plus tax
> Option #2
Drop transmission, replace converter, etc. Total: $4,5k
Apparently, this car’s transmission is good for about 150k miles before doing the whole drop.
Have any of you had the same problem and was it the converter too or something else? Does this sound legit?
I’m debating whether I should invest in the car and keep it long-term or if this is a 1st of more serious issues and I should upgrade to a newer model. Tbh, I would prefer keeping it since it would break my heart to sell it so cheap since most of the depreciation has hit already. If this vibration thing finally disappears, I will probably refresh the car with some 18” wheels, spoiler, diffuser and exhaust to give it an AMG look and keep it for as long as possible.
Apologies for the long post. New here and really needing your advice.
Thank you!!
MBWorld God!
Joined: Dec 2019
Posts: 33,393
Likes: 6,624
