Andi Collaku
Registered
- Joined
- Oct 16, 2017
- Messages
- 1
- Reaction score
- 0
- Location
- Loondon, United Kingdom
- Your Mercedes
- Mercedes Benz W221 S350 Bluetec
Hi folks,
I have a Mercedes Benz W221 S350 Bluetec 2013. For more than a month I`m experiencing an odd intermittent issue with the engine or maybe the transmission also. Is a bit difficult to explain my problem but I will try to describe it as best as I can. When I start the car in the morning everything run good and no problem at all. After the engine reach 40C and above my problems appear. The car is shaking or jerking when I`m cruising at a constant speed (40 / 60 70 MPH). It feels like the car wants to change the gear and this symptom continue all the time with regular interval until the engine temp reaches 85C. After the engine reaches this temp, this symptom happens very rarer. I think is not a transmission issue because when I completely stop the car (on the semaphore for example) and leave the gearbox engaged on D the idle revs start to change (to goes up and down) until a point when the engine shutdown by itself. I need to start the engine and drive but the issue is the same until the engine reaches 85C. I`ve SDConnect (Xentry) scanning system and the only error I have is the NOX sensor which I`ve replaced twice with the original one from Mercedes Benz. Another thing to mention is that Bluetec is disabled or deactivated (deleted maybe) from the previous owner but never had problems before. My car has covered about 156000 miles. Please, folks can you help me to identify this problem? Please feel free to ask me any questions. I`ve tried to explain my problem as much as I can.
Best,
Andi
I have a Mercedes Benz W221 S350 Bluetec 2013. For more than a month I`m experiencing an odd intermittent issue with the engine or maybe the transmission also. Is a bit difficult to explain my problem but I will try to describe it as best as I can. When I start the car in the morning everything run good and no problem at all. After the engine reach 40C and above my problems appear. The car is shaking or jerking when I`m cruising at a constant speed (40 / 60 70 MPH). It feels like the car wants to change the gear and this symptom continue all the time with regular interval until the engine temp reaches 85C. After the engine reaches this temp, this symptom happens very rarer. I think is not a transmission issue because when I completely stop the car (on the semaphore for example) and leave the gearbox engaged on D the idle revs start to change (to goes up and down) until a point when the engine shutdown by itself. I need to start the engine and drive but the issue is the same until the engine reaches 85C. I`ve SDConnect (Xentry) scanning system and the only error I have is the NOX sensor which I`ve replaced twice with the original one from Mercedes Benz. Another thing to mention is that Bluetec is disabled or deactivated (deleted maybe) from the previous owner but never had problems before. My car has covered about 156000 miles. Please, folks can you help me to identify this problem? Please feel free to ask me any questions. I`ve tried to explain my problem as much as I can.
Best,
Andi
