W217 S500 with the highest miles on the World loosing boost
Thread Starter
Newbie
Joined: May 2024
Posts: 8
Likes: 9
S500 coupe
W217 S500 with the highest miles on the World loosing boost
Hi,
i am from Turkey and own an S Coupe m278 engine. I think it has the highest miles on the world with first engine and turbo and gearbox. It has 330.000 miles (530000 km) and still drives like a dream. I have now the following problem. When i start the car it runs fine and boost pressure is ok. But after 3 to 5 minutes it looses all the boost pressure. When i restart the car boost pressure again there for 3 to 5 mintutes. It has fault code p0299. Alteade changed the solenoid for wastegate.
i have a little rattle at the turbos but i dont understand why it only has boost for a few minutes.
Any help is appreciated.
i am from Turkey and own an S Coupe m278 engine. I think it has the highest miles on the world with first engine and turbo and gearbox. It has 330.000 miles (530000 km) and still drives like a dream. I have now the following problem. When i start the car it runs fine and boost pressure is ok. But after 3 to 5 minutes it looses all the boost pressure. When i restart the car boost pressure again there for 3 to 5 mintutes. It has fault code p0299. Alteade changed the solenoid for wastegate.
i have a little rattle at the turbos but i dont understand why it only has boost for a few minutes.
Any help is appreciated.
Senior Member
Joined: Mar 2022
Posts: 267
Likes: 61
From: Chicago
Bi-Turbo E550 Coupe (W207)
Congratulations on getting such high mileage on your M278 engine! If you don't mind me asking was there any special maintenance or way you cared for the engine that has kept it running smoothly for so long?
(Note: This will probably be moved to the W217 forum and out of the W222 forum by one of the administrators.)
(Note: This will probably be moved to the W217 forum and out of the W222 forum by one of the administrators.)
Thread Starter
Newbie
Joined: May 2024
Posts: 8
Likes: 9
S500 coupe
The car has had its regular isnpections at the dealer and the miles are almost only driven on highway. I would say 95% highway miles. No special maintanance. 22 inspection till now 😁
But the car drives still like 50.000 miles.
But the car drives still like 50.000 miles.
Last edited by bodrumlu; May 21, 2024 at 03:39 PM.
MBWorld Fanatic!
Joined: Oct 2002
Posts: 4,975
Likes: 1,343
From: Cincinnati
2010 E350 4Matic
Hi,
i am from Turkey and own an S Coupe m278 engine. I think it has the highest miles on the world with first engine and turbo and gearbox. It has 330.000 miles (530000 km) and still drives like a dream. I have now the following problem. When i start the car it runs fine and boost pressure is ok. But after 3 to 5 minutes it looses all the boost pressure. When i restart the car boost pressure again there for 3 to 5 mintutes. It has fault code p0299. Alteade changed the solenoid for wastegate.
i have a little rattle at the turbos but i dont understand why it only has boost for a few minutes.
Any help is appreciated.
i am from Turkey and own an S Coupe m278 engine. I think it has the highest miles on the world with first engine and turbo and gearbox. It has 330.000 miles (530000 km) and still drives like a dream. I have now the following problem. When i start the car it runs fine and boost pressure is ok. But after 3 to 5 minutes it looses all the boost pressure. When i restart the car boost pressure again there for 3 to 5 mintutes. It has fault code p0299. Alteade changed the solenoid for wastegate.
i have a little rattle at the turbos but i dont understand why it only has boost for a few minutes.
Any help is appreciated.
Super Member
Joined: May 2011
Posts: 975
Likes: 270
From: Fort Worth TX
2020 S560, 2014 SLK55 (Prev. 2016 S65, 2013 SLK350, 2008 CLS63, 2006 E350, 2006 CLS500, 2005 C230K)
That is turbo underperformance check for boost leaks and check turbo for play and wear.
At that millage it would not be surprising if you need a new turbo.
At that millage it would not be surprising if you need a new turbo.
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MBWorld Fanatic!
Joined: Oct 2002
Posts: 4,975
Likes: 1,343
From: Cincinnati
2010 E350 4Matic
Newbie
Joined: Oct 2024
Posts: 6
Likes: 0
Hi,
i am from Turkey and own an S Coupe m278 engine. I think it has the highest miles on the world with first engine and turbo and gearbox. It has 330.000 miles (530000 km) and still drives like a dream. I have now the following problem. When i start the car it runs fine and boost pressure is ok. But after 3 to 5 minutes it looses all the boost pressure. When i restart the car boost pressure again there for 3 to 5 mintutes. It has fault code p0299. Alteade changed the solenoid for wastegate.
i have a little rattle at the turbos but i dont understand why it only has boost for a few minutes.
Any help is appreciated.
i am from Turkey and own an S Coupe m278 engine. I think it has the highest miles on the world with first engine and turbo and gearbox. It has 330.000 miles (530000 km) and still drives like a dream. I have now the following problem. When i start the car it runs fine and boost pressure is ok. But after 3 to 5 minutes it looses all the boost pressure. When i restart the car boost pressure again there for 3 to 5 mintutes. It has fault code p0299. Alteade changed the solenoid for wastegate.
i have a little rattle at the turbos but i dont understand why it only has boost for a few minutes.
Any help is appreciated.
I admire your well preserved car! And I am surprised this topic deserved so little attention by the community. So please allow me to ask you some questions.
I intend to buy an S Coupe as a daily for long term and to put a lot of miles on it (not nearly as much as you though). But as an E55 owner I am used to a problem free engine. So the m157 is out of the list. It is good to hear that your 2015+ m278 is so durable.
1. How often do you change the oil? Some do it every 5000-7000 km (3000-4000 miles). But a very skilled mechanic said this should be done only if you drive it primarily in town traffic, while "changing oil that often if you mainly use it on the highway would have a placebo effect."
2. Could you point some major repairs that you did?
3. What is the approximate amount of money that you spent on maintenance?
4. Was there a significant increase in maintenance cost after 100, 200, 300.000 miles?
Thread Starter
Newbie
Joined: May 2024
Posts: 8
Likes: 9
S500 coupe
I did the oilchanges only when car showed to be serviced so every 25.000 km. It is an highway car for 95%. I didnt have any major problems till now. The turbo flaps are changed and the engine had to come out for that. That was the only major problem. I am not a very fast driver. I am still enjoying my car every time i drive it. Almost every part is still orijinal.
