Vaccum line replacement cost
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Joined: Dec 2020
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E400
Vaccum line replacement cost
So while dealing with the torque converter issue, I was told that vacuum line under intake is leaking and was quoted $960. I didn’t ask for details on whether this covers replacing all the hoses yet, but I’d like to reach out here to get your opinion what should this cover and if this looks reasonable. (this is at a dealership). Does this require engine removal ?.
Appreciate your replies. Vehicle is a 2015 E400.
Appreciate your replies. Vehicle is a 2015 E400.
Last edited by mbe400user; Jan 9, 2026 at 11:12 AM.
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Joined: Apr 2019
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From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
plenum vacuum issue
On the flip side the shared tiny check-valve at the pump go bad routinely due to high crankcase pressure instead of vacuum.
MB Dealer network does not sell the $1 plastic part but the whole pump only...
Search for it on Internet using keywords " vacuum pump check valve":
tiny check valve cheaper than whole pump...
Last edited by CaliBenzDriver; Jan 9, 2026 at 05:03 PM.
Out Of Control!!
Joined: Apr 2019
Posts: 11,924
Likes: 6,776
From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
MBWorld Fanatic!
Joined: May 2018
Posts: 6,602
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From: Jakarta-Indonesia
2014 - W212.065 - E400 ( M276.820, 3 liter Turbo) RWD not Hybrid
So while dealing with the torque converter issue, I was told that vacuum line under intake is leaking and was quoted $960. I didn’t ask for details on whether this covers replacing all the hoses yet, but I’d like to reach out here to get your opinion what should this cover and if this looks reasonable. (this is at a dealership). Does this require engine removal ?.
Appreciate your replies. Vehicle is a 2015 E400.
Appreciate your replies. Vehicle is a 2015 E400.
Test the suspect vacuum line first before you proceed any further
https://mbworld.org/forums/e-class-w...rity-test.html
M276.8 3.0 Turbo of E400 does not use vacuum actuation for intake flaps like M276.9 3.5NA. There is no such intake flap on 3.0 Turbo.
The thin small vacuum hose #20 is routed close to intake manifold......... is only for turbo wastegate controller.
I have replaced mine, both #20 and #10, preventive.
https://mbworld.org/forums/e-class-w...m-refresh.html
It is easy DIY. Only lift up the wire tray for engine computer and disconnect almost all engine sensors connectors ....
Good luck...
Last edited by S-Prihadi; Jan 9, 2026 at 10:22 PM.
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E400
Thank you @CaliBenzDriver @S-Prihadi for your replies. Sorry for late reply. Vehicle was at dealer and I couldn't do the tests you suggested. Work was complete and they replaced 2760182300 which is listed as Bleed line between Oil Separator and Turbocharger. This was either nearing failure or broken somewhere from previous fatigued condition during TC remove/replace work (was mentioned in notes, engine was lowered for R&R work).
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MBWorld Fanatic!
Joined: May 2018
Posts: 6,602
Likes: 6,549
From: Jakarta-Indonesia
2014 - W212.065 - E400 ( M276.820, 3 liter Turbo) RWD not Hybrid
Thank you @CaliBenzDriver @S-Prihadi for your replies. Sorry for late reply. Vehicle was at dealer and I couldn't do the tests you suggested. Work was complete and they replaced 2760182300 which is listed as Bleed line between Oil Separator and Turbocharger. This was either nearing failure or broken somewhere from previous fatigued condition during TC remove/replace work (was mentioned in notes, engine was lowered for R&R work).
The entire complete system : That fine mist oil separator A has check valve too inside. I have replaced mine, as a 10-11 year refresh.
