Submariner1
Senior Member
- Joined
- Sep 3, 2016
- Messages
- 4,689
- Reaction score
- 787
- Location
- Windsor Berkshire
- Your Mercedes
- CL500 2009 5.5
Hi
My friend was so impressed with my new CL500, he wants one. But would like to buy an earlier one for budget reasons.
He said he had heard that a large bunch of V8 M273 and V6 M272 engines had defects with the "Balance Shaft and camshaft idler pulley????".
Apparently he said MB lost a class action in the USA.
I wouldn't have believed it, except when I had this great MB technicitian look over my car, he took a few minutes to come out and apologied, but said he needed to do some research on my car (exact production date and the engine number) - as some of the earlier M273 engines had "timing gear problems that were resolved in the later variants" or something like that.
He said, fortunately your engine is one of the later ones, and has the good components, so you have a bullet proof engine! - yeah they can be a bit more chattery than you SL500 but thats normal"
Given the all clear I paid no further attention, now I wish I had, a) to help my friend and b) if I upgrade the wifes car I might go for a V6 and they had bigger problems.
So the question is :-
Is this rumour true?
He believes to miss the balance shaft issue and the timing gear issue
The engine numbers have to be after:-
You are fine if your number is higher than:
M272 Engine Serial No. 2729..30 468993. Bad magnets Camshaft sensors up to 30-759427for the M272
M273 Engine Serial No. 2739..30 088611 Bad magnets Camshaft sensors up to 30-193592 for the M273.
( I have no idea where he got this info ... somewhere on the net or if it is accurate?? )
On my replacement data card info, supplied by Mercedes CS, it lists an "engine number" And an "engine object number".
They are slightly different.
I assume its the engine number that counts in determining the problem - this is the one like 273 961 30 xxx xxx. The engine object number misses out the 961 part and the remainder is different .
I know mine is OK on both counts, I just need to know for my friend. Plus for my wifes future car.
I hear these 2 issues (not the cam magnet part) are serious engine out jobs?
Also if one found this problem, on a car up to 10 years old, say sub 60,000 miles would Mercedes help you financially?
If the above issue is the case, am I correct, that to avoid these problem engines - you would have to have a vin decoder get you the engine no, or get it off the V5 or data card?
Seems unbeleivable one would have to go to this trouble, but I guess repairing this is very expensive, and he says you even need to change the oil pump as this can be compromised.
My friend was so impressed with my new CL500, he wants one. But would like to buy an earlier one for budget reasons.
He said he had heard that a large bunch of V8 M273 and V6 M272 engines had defects with the "Balance Shaft and camshaft idler pulley????".
Apparently he said MB lost a class action in the USA.
I wouldn't have believed it, except when I had this great MB technicitian look over my car, he took a few minutes to come out and apologied, but said he needed to do some research on my car (exact production date and the engine number) - as some of the earlier M273 engines had "timing gear problems that were resolved in the later variants" or something like that.
He said, fortunately your engine is one of the later ones, and has the good components, so you have a bullet proof engine! - yeah they can be a bit more chattery than you SL500 but thats normal"
Given the all clear I paid no further attention, now I wish I had, a) to help my friend and b) if I upgrade the wifes car I might go for a V6 and they had bigger problems.
So the question is :-
Is this rumour true?
He believes to miss the balance shaft issue and the timing gear issue
The engine numbers have to be after:-
You are fine if your number is higher than:
M272 Engine Serial No. 2729..30 468993. Bad magnets Camshaft sensors up to 30-759427for the M272
M273 Engine Serial No. 2739..30 088611 Bad magnets Camshaft sensors up to 30-193592 for the M273.
( I have no idea where he got this info ... somewhere on the net or if it is accurate?? )
On my replacement data card info, supplied by Mercedes CS, it lists an "engine number" And an "engine object number".
They are slightly different.
I assume its the engine number that counts in determining the problem - this is the one like 273 961 30 xxx xxx. The engine object number misses out the 961 part and the remainder is different .
I know mine is OK on both counts, I just need to know for my friend. Plus for my wifes future car.
I hear these 2 issues (not the cam magnet part) are serious engine out jobs?
Also if one found this problem, on a car up to 10 years old, say sub 60,000 miles would Mercedes help you financially?
If the above issue is the case, am I correct, that to avoid these problem engines - you would have to have a vin decoder get you the engine no, or get it off the V5 or data card?
Seems unbeleivable one would have to go to this trouble, but I guess repairing this is very expensive, and he says you even need to change the oil pump as this can be compromised.
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