2015 S550 Rough downshift from 5 to 4. help plz
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Newbie
Joined: Nov 2019
Posts: 6
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2015 S550
2015 S550 Rough downshift from 5 to 4. help plz
Hi members. I purchased a 2015 S550 over a year ago. It does a hard downshift from 5th to 4th gear, especially when the car is cold. Then it goes away after about 20 min of driving. I have brought it into the dealer multiple times and the foreman tells me that they are fully aware of the issue, but they do not know how to fix it. Any experiences or advice ?
MBWorld Fanatic!
Joined: Sep 2019
Posts: 3,129
Likes: 1,508
From: U.S.
Current/Last 5-years:GLS;G70;Alpina B8;X7;Accord. Sold:X7,TeslaS;S560;S550,X5;530e;L.Navigator;LS460
Hi members. I purchased a 2015 S550 over a year ago. It does a hard downshift from 5th to 4th gear, especially when the car is cold. Then it goes away after about 20 min of driving. I have brought it into the dealer multiple times and the foreman tells me that they are fully aware of the issue, but they do not know how to fix it. Any experiences or advice ?
https://mbworld.org/forums/new-s-cla...ting-w222.html
Thread Starter
Newbie
Joined: Nov 2019
Posts: 6
Likes: 1
2015 S550
Still Unresolved 5-4
Brought my car in again for the 5-4 rough downshift. They kept the car for 2 weeks and informed me that they are unable to fix it and that a software is “in development for 1st or 2nd quarter of 2020.” I also called MBUSA and they were extremely unprofessional, first ignoring me and then telling me that they are not responsible to fix it once my CPO warranty runs out. I am never again buying a Benz. Any remedies? And I tried to show the service advisor the 1 successful fix on the thread and he didn’t want to hear it.
MBWorld Fanatic!
Joined: Sep 2019
Posts: 3,129
Likes: 1,508
From: U.S.
Current/Last 5-years:GLS;G70;Alpina B8;X7;Accord. Sold:X7,TeslaS;S560;S550,X5;530e;L.Navigator;LS460
Brought my car in again for the 5-4 rough downshift. They kept the car for 2 weeks and informed me that they are unable to fix it and that a software is “in development for 1st or 2nd quarter of 2020.” I also called MBUSA and they were extremely unprofessional, first ignoring me and then telling me that they are not responsible to fix it once my CPO warranty runs out. I am never again buying a Benz. Any remedies? And I tried to show the service advisor the 1 successful fix on the thread and he didn’t want to hear it.
See my thread on this fix below:
https://mbworld.org/forums/s-class-w...ng-w222-2.html
Last edited by S_W222; Dec 24, 2019 at 10:27 AM.
