S-Class (W221) 2007-2013: S 320 CDI, S 350, S 450, S 500, S 550, S 420 CDI, S 600

location of diverter/blow off valve sensor

Old Jul 1, 2021 | 07:10 PM
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Midnight s600's Avatar
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2007 Mercedes Benz s600 (w221)
location of diverter/blow off valve sensor

I about 2 months ago bought a 2007 s600 and despite searching all around I can not seem to figure out where the diverter valve sensor is assuming it has one any help is appreciated thanks (m275 v12)
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Old Jul 2, 2021 | 10:17 AM
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Are you talking diverter valve. If so, there is a repair kit available part # 2750960002.







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Old Jul 3, 2021 | 05:47 PM
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2007 Mercedes Benz s600 (w221)
@konigstiger thank you for that but I mean if it has sensor for the diverted valve like alot of modern cars with turbos have a sensor along with it and I was wondering if these motors have them aswell
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Old Jul 3, 2021 | 10:13 PM
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2007 S600
Originally Posted by Midnight s600
@konigstiger thank you for that but I mean if it has sensor for the diverted valve like alot of modern cars with turbos have a sensor along with it and I was wondering if these motors have them aswell
They do, it’s tucked under the intercooler on top of the valve cover on the right side. You can follow the vacuum line from the bypass valve back.

And speaking of those vacuum lines, they are hard plastic (likely nylon) and do seem to get brittle and break. There’s also a transition to a rubber hose on the left side up near the front of the valve cover that I’ve had split and need to be trimmed back and re-clamped.

PTFE tubing used for 3D printer Bowden filament feeds (4 mm OD) makes a dandy replacement for the rigid vacuum line.

edit: that’s actually not the sensor, it’s a valve to actuate the bypass valves. There are MAP sensors on both intakes as well as one in the intake manifold. ECU senses manifold pressure and determines when to open the bypass valves.

Last edited by DaleB; Jul 3, 2021 at 10:16 PM.
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